Author: "FEE Gmbh" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"FEE Gmbh"' showing total 54 results

Start Over Author "FEE Gmbh"

54 results on '"FEE Gmbh"'

1. Harmonic nanoparticles for nonlinar bio-imaging and detection

Author: GAP-Biophotonics ; Université de Genève, Femto ; Laboratoire Collisions Agregats Reactivite (LCAR) ; CNRS - Université Paul Sabatier (UPS) - Toulouse III - CNRS - Université Paul Sabatier (UPS) - Toulouse III, Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME) ; Université de Savoie, FEE ; FEE GmBh, Bonacina, Luigi, Magouroux, Thibaud, Rogov, A., Staedter, David, Joulaud, Cécile, Schwung, Sebastian, Passemard, Solène, Le Dantec, Ronan, Mugnier, Yannick, Rytz, Daniel, Gerber-Lemaire, Sandrine, Wolf, J.P, GAP-Biophotonics ; Université de Genève, Femto ; Laboratoire Collisions Agregats Reactivite (LCAR) ; CNRS - Université Paul Sabatier (UPS) - Toulouse III - CNRS - Université Paul Sabatier (UPS) - Toulouse III, Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME) ; Université de Savoie, FEE ; FEE GmBh, Bonacina, Luigi, Magouroux, Thibaud, Rogov, A., Staedter, David, Joulaud, Cécile, Schwung, Sebastian, Passemard, Solène, Le Dantec, Ronan, Mugnier, Yannick, Rytz, Daniel, Gerber-Lemaire, Sandrine, and Wolf, J.P
Abstract: Proc. SPIE 8611, International audience, In this contribution we present the motivations underlying the introduction of harmonic nanoparticles, i.e. Second harmonic contrast agents for nonlinear microscopy. Their properties will be discussed in the light of various biological applications including imaging of stem cells and rare event detection in physiological media.

2. Single crystal growth of BaZrO3 from the melt at 2700 °C using optical floating zone technique and growth prospects from BaB2O4 flux at 1350 °C

Author: Alain Maillard, Michaël Josse, Jens Kreisel, Monica Ciomaga Hatnean, Geetha Balakrishnan, Daniel Rytz, Matias Velázquez, Mael Guennou, Raphael Haumont, Constance Toulouse, Philippe Veber, Nathalie Valle, Romuald Saint Martin, Cong Xin, Mario Maglione, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Luxembourg Institute of Science and Technology (LIST), Luminescence (LUMINESCENCE), Institut Lumière Matière [Villeurbanne] (ILM), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, University of Warwick [Coventry], Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), FEE Gmbh, FEE GmBh, Physics and Materials Science Research Unit, University of Luxembourg [Luxembourg], This work was supported by the Innovative Training Networks (ITN) – Marie Skłodowska-Curie Actions-European Joint Doctorate in Functional Material Research (EJD-FunMat) project (no. 641640). The work at the University of Warwick was supported by the EPSRC, UK, Grant EP/M028771/1. Cong Xin, Dr. Mael Guennou, Dr Constance Toulouse and Prof. Jens Kreisel acknowledge support from the National Research Fund Luxembourg through a Pearl Grant (FNR/P12/4853155)., European Project: 641640,H2020,H2020-MSCA-ITN-2014,EJD-FunMat(2015), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Flux method, Materials science, Glow Discharge Mass Spectrometry, Band gap, Analytical chemistry, 02 engineering and technology, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, Secondary ion mass spectrometry, symbols.namesake, Impurity, Melting point, symbols, General Materials Science, 0210 nano-technology, Raman spectroscopy, Spectroscopy
Abstract: International audience; We report the growth of BaZrO3 single crystals by the optical floating zone technique and the investigation on its flux growth using BaB2O4 as a solvent. 6 mm long colorless and transparent single crystals were obtained with a mirror furnace without the need for post-treatment annealing. Its properties are determined and compared with those of two commercial crystals grown by the tri-arc Czochralski method. The chemical composition was investigated using glow discharge mass spectrometry (GDMS) and secondary ion mass spectrometry (SIMS), which indicate minor impurities of Sr, Hf, Ca and Ti, with maximal concentrations for Sr and Hf in the range of 0.3–0.5% at. The optical band gap determined by UV-visible spectroscopy is found to be ∼4.8 eV and indicates the high quality of the BaZrO3 crystals grown by the optical floating zone technique. Raman spectroscopy at ambient conditions and at low temperatures down to 4.2 K reveals a relatively sharp second-order spectrum and does not reveal any structural phase transition. Prospective high-temperature solution growth using BaB2O4 self-flux was investigated and led to 150–200 μm BaZrO3 crystals. This solvent opens the way to grow BaZrO3 at half its melting point by the flux method.
Published: 2019
Full Text: View/download PDF

3. Watt-level europium laser at 703 nm

Author: Pavel Loiko, Patrice Camy, Jean-Louis Doualan, Patrick Pues, Daniel Rytz, Sebastian Schwung, Thomas Jüstel, Optique, Matériaux et Laser (OML), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), FEE Gmbh, FEE GmBh, FEE, Department of Chemical Engineering, Münster University of Applied Sciences, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, 7. Clean energy, 01 natural sciences, law.invention, 010309 optics, Crystal, Optics, law, 0103 physical sciences, ComputingMilieux_MISCELLANEOUS, Laser threshold, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Green laser, Slope efficiency, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, chemistry, X-ray crystallography, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, business, Europium, Monoclinic crystal system
Abstract: We report on a watt-level highly efficient europium laser operating at the 5 D 0 → 7 F 4 transition. It is based on the stoichiometric K E u ( W O 4 ) 2 crystal. Under pumping by a green laser at 532.1 nm, the K E u ( W O 4 ) 2 laser generated a maximum peak output power of 1.11 W at ∼ 703 n m with a slope efficiency of 43.2% and a linear polarization ( E ‖ N m ). A laser threshold as low as 64 mW was achieved. True continuous-wave operation was demonstrated. The polarized emission properties of monoclinic K E u ( W O 4 ) 2 were determined.
Published: 2021
Full Text: View/download PDF

4. Spectroscopic properties of newly flux grown and highly Yb3+-doped cubic RE2O3 (RE=Y, Gd, Lu) laser crystals

Author: Philippe Goldner, Gabriel Buse, Véronique Jubera, Yannick Petit, Philippe Veber, Patrick Aschehough, Mark Peltz, Daniel Rytz, Anaël Jaffrès, Gérard Aka, V. Wesemann, Matias Velázquez, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC), Université Paris sciences et lettres (PSL), FEE Gmbh, FEE GmBh, Aquitaine Region, the , the and the French 'Agence Nationale de la Recherche' (decision n° ANR 2010 JCJC 0909 01), for supporting this workRégion Aquitaine, GIS 'Advanced Materials in Aquitaine', 'pôle de compétitivité' photonics in Aquitaine 'Route des Lasers', and ANR-10-JCJC-0909,RESONATE,Croissance cristalline de sesquioxydes de terre rare par la méthode des flux(2010)
Subjects: Materials science, Flux crystal growth, Analytical chemistry, Physics::Optics, Flux, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, law.invention, Inorganic Chemistry, law, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Spectroscopy, Yb3+ ion spectroscopy, Laser crystals, Rare-earth sesquioxides, Organic Chemistry, Doping, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Laser, Fluorescence, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Crystallography, Absorption (chemistry), 0210 nano-technology
Abstract: International audience; We have developed laser grade and highly Yb3+-doped cubic rare-earth sesquioxides (RE2O3, RE = Y, Gd, Lu) single crystals by means of a newly designed high-temperature solution growth method which gives them spectroscopic properties different from those obtained by high-temperature solidification methods. Absorption and emission cross sections, visible anti-Stokes emission, fluorescence decays of the new cubic Gd2O3:Yb3+ single crystals are presented and compared to those of Y2O3:Yb3+ and Lu2O3:Yb3+ crystals. The case of cubic Gd2O3:Yb3+ is particularly interesting since its basic spectroscopic properties have never been detailed and we were capable of achieving Yb-doping level as high as 20%.
Published: 2015
Full Text: View/download PDF

5. Refined Orientation of the Optical Axes as a Function of Wavelength in Monoclinic Double Tungstates

Author: Magdalena Aguiló, Patricia Segonds, Alexandra Peña, Francesc Díaz, V. V. Filippov, Jérôme Debray, Xavier Mateos, Benoît Boulanger, Patricia Loren Inácio, Maria Cinta Pujol, Pavel Loiko, Konstantin Yumashev, Daniel Rytz, Marc Eichhorn, Center for Optical Technologies and Department of Materials Science and Engineering, Lehigh University, Optique et Matériaux (OPTIMA ), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Cristaux Massifs (CrisMass), FEE Gmbh, FEE GmBh, Universitat Rovira i Virgili, Física i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA), and Pena Revellez, Alexandra
Subjects: [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, 02 engineering and technology, Dielectric, Function (mathematics), 021001 nanoscience & nanotechnology, Rotation, 01 natural sciences, Molecular physics, Refraction, 010309 optics, Wavelength, Optics, Orientation (geometry), 0103 physical sciences, Beam shaping, 0210 nano-technology, business, ComputingMilieux_MISCELLANEOUS, Monoclinic crystal system
Abstract: We measured the rotation of the dielectric frame and determined the orientation of the optical axes in KRE(WO4)2 (RE = Gd, Y, Lu) crystals, as a function of wavelength in the 0.4-1.6 μm range.
Published: 2016
Full Text: View/download PDF

6. Flux growth at 1230 °C of cubic Tb2O3 single crystals and characterization of their optical and magnetic properties

Author: Matias Velázquez, Grégory Gadret, Daniel Rytz, Rodolphe Decourt, Philippe Veber, Mark Peltz, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), FEE Gmbh, FEE GmBh, Institut de Chimie de la Matière Condensée de Bordeaux ( ICMCB ), Université de Bordeaux ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), and Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Flux method, Materials science, Absorption spectroscopy, Verdet constant, Analytical chemistry, Inorganic compounds, Crystal growth, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, Condensed Matter Physics, Magnetic susceptibility, Crystals, Crystal, Sesquioxide, Crystallography, Impurity, [ CHIM.MATE ] Chemical Sciences/Material chemistry, General Materials Science
Abstract: International audience; In this work, we present the first crystal growth of cubic Tb2O3 single crystals by a controlled atmosphere flux method which uses a heavy metal free solvent working at less than half the melting temperature of this sesquioxide. Cubic millimeter-sized crystals extracted from as-grown boules are phase (powder XRD) and chemically (GDMS) pure and exhibit a Verdet constant in the visible and near-infrared spectral ranges, which is at least three times higher than that of a commercial Tb3Ga5O12 (TGG) crystal. The 1.36 mm thick crystals display a transmission coefficient higher than 77% over the 525 nm–1.38 μm spectral range. The absorption spectrum, magnetic susceptibility and specific heat measurements on the single crystals confirm the absence of detectable Tb4+ cations and other impurities.
Published: 2015
Full Text: View/download PDF

7. Orientation and polarization dependence of both the absorption and the laser efficiency around the optic axis in monoclinic Ho3+ :KYW

Author: CATTOOR, Romain, MANEK-HÖNNINGER, Inka, PETIT, Yannick, RYTZ, Daniel, CANIONI, Lionel, EICHHORN, Marc, Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), Institut Franco-Allemand de Recherches de Saint Louis (ISL), Institut Franco-Allemand de Recherches de Saint Louis, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), FEE Gmbh, FEE GmBh, This work was supported by NSF grant DMR 0804167, Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), and Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics::Optics, [CHIM.MATE]Chemical Sciences/Material chemistry
Abstract: International audience; A complete solid solution between the anion-deficient pyrochlore Ag2Sb2O6 and the ideal pyrochlore Cd2Sb2O7 has been synthesized through the standard solid state ceramic method. Each composition has been characterized by various different techniques, including powder X-ray diffraction, optical spectroscopy, electron paramagnetic resonance and 121Sb Mössbauer spectroscopy. Computational methods based on density functional theory complement this investigation. Photocatalytic activity has been studied, and transport properties have been measured on pellets densified by spark plasma sintering. The analysis of the data collected from these various techniques enables a comprehensive characterization of the complete solid solution and revealed an anomalous behavior in the Cd-rich end of the solid solution, which has been proposed to arise from a possible radical O− species in small concentrations.; We report on the absorption profile of the monoclinic holmium-doped KY(WO4)2 crystal near the optic axis for the maximal absorption wavelength at 1960 nm. The full angular distribution of the absorption coefficient at the vicinity of such optical singularity has been experimentally and numerically investigated. Furthermore, laser experiments along the optic axis have been carried out. So-called conical refraction laser and classical Gaussian laser operation are compared near the optic axis, taking into account the complex absorption profile.
Published: 2015
Full Text: View/download PDF

8. Cellular uptake and biocompatibility of bismuth ferrite harmonic advanced nanoparticles

Author: Jean-Pierre Wolf, Adriele Prina-Mello, Bashir M. Mohamed, Yannick Mugnier, Ronan Le Dantec, Thomas Jüstel, Yuri Volkov, Sebastian Schwung, Luigi Bonacina, Daniel Rytz, Sandrine Gerber-Lemaire, Ciaran Manus Maguire, Stéphanie Hwu, Davide Staedler, Andrii Rogov, Solène Passemard, Thibaud Magouroux, Group of Applied Physics [Geneva] (GAP), University of Geneva [Switzerland], FEE Gmbh, FEE GmBh, Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), and Symme, Univ. Savoie Mont Blanc
Subjects: Materials science, Biocompatibility, Biomedical Engineering, Contrast Media, Pharmaceutical Science, Medicine (miscellaneous), Nanoparticle, chemistry.chemical_element, FOS: Physical sciences, Bioengineering, Nanotechnology, ddc:500.2, Ferric Compounds, Matériaux et outils pour la santé, Bismuth, chemistry.chemical_compound, Nanophotonic, Coated Materials, Biocompatible, Cell Line, Tumor, Materials Testing, Cell Behavior (q-bio.CB), Humans, General Materials Science, Physics - Biological Physics, Cytotoxicity, [SPI.MECA.GEME] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], Non-linear imaging, ComputingMilieux_MISCELLANEOUS, Bismuth ferrite, PEGylation, 3. Good health, Squamous carcinoma, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], chemistry, Biological Physics (physics.bio-ph), FOS: Biological sciences, Nanophotonics, Nanoparticles, Molecular Medicine, Quantitative Biology - Cell Behavior, Ethylene glycol
Abstract: Bismuth Ferrite (BFO) nanoparticles (BFO-NP) display interesting optical (nonlinear response) and magnetic properties which make them amenable for bio-oriented applications as intra- and extra membrane contrast agents. Due to the relatively recent availability of this material in well dispersed nanometric form, its biocompatibility was not known to date. In this study, we present a thorough assessment of the effects of in vitro exposure of human adenocarcinoma (A549), lung squamous carcinoma (NCI-H520), and acute monocytic leukemia (THP-1) cell lines to uncoated and poly(ethylene glycol)-coated BFO-NP in the form of cytotoxicity, haemolytic response and biocompatibility. Our results support the attractiveness of the functional-BFO towards biomedical applications focused on advanced diagnostic imaging., Word Count: 109 Complete Word Count (body text and figure legends) : 4886 Number of Figures: 6 Number of Tables: 0 Number of reference: 45
Published: 2014

9. Direct measurement of the dielectric frame rotation of potential monoclinic crystals as a function of the wavelength

Author: Germano Montemezzani, Patricia Segonds, Philippe Goldner, Patricia Loren-Inacio, Benoit Boulanger, Christian Traum, Corinne Felix, Alban Ferrier, Alexandra Pena, Jérôme Debray, Yannick Petit, Daniel Ritz, Optique et Matériaux (NEEL - OPTIMA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Optique & Microscopies (NEEL - POM), Cristaux massifs (NEEL - CrisMass), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), FEE Gmbh, FEE GmBh, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Chimie ParisTech, Université Pierre et Marie Curie - Paris 6 (UPMC), Segonds, Patricia, Optique et Matériaux (OPTIMA), Optique et microscopies (POM), Cristaux Massifs (CrisMass), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB)
Subjects: Materials science, [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, business.industry, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Rotation, 01 natural sciences, Measure (mathematics), Molecular physics, 010309 optics, Wavelength, Optics, Orientation (geometry), 0103 physical sciences, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Crystal optics, 0210 nano-technology, business, Refractive index, ComputingMilieux_MISCELLANEOUS, Monoclinic crystal system
Abstract: We report a method based on Malus law to directly measure the dielectric frame orientation of monoclinic crystals with an accuracy of 0.3°. This technique was validated by the study of Nd3+:YCa4O(BO3)3, Sn2P2S6, BiB3O6 and Eu3+:Y2SiO5.
Published: 2014

10. Laser action along and near the optic axis of a holmium-doped KY(WO 4 ) 2 crystal

Author: Inka Manek-Hönninger, Lionel Canioni, Romain Cattoor, Marc Eichhorn, Daniel Rytz, Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Institut Franco-Allemand de Recherches de Saint Louis (ISL), Institut Franco-Allemand de Recherches de Saint Louis, FEE Gmbh, and FEE GmBh
Subjects: Materials science, Physics::Optics, chemistry.chemical_element, Laser pumping, solid-state, law.invention, OCIS codes: 140.0140, 140.3300, 140.3410, 140.3580, Optics, law, Fiber laser, Laser and laser optics, Laser power scaling, Laser beam shaping, Laser resonators, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Lasers, Slope efficiency, Laser, Atomic and Molecular Physics, and Optics, Optical axis, chemistry, Optoelectronics, business, Holmium, Lasing threshold
Abstract: International audience; We demonstrate the first (to our knowledge) quasi-three-level conical refraction laser operating at 2 μm, with 1.6 W of output power at 2074 nm, using a holmium-doped KYWO 4 2 crystal. A maximum slope efficiency of 52% has been achieved, along the optic axis with respect to the absorbed pump power. Furthermore, lasing operation around the optic axis has been performed. In this case, a maximum output power of 3 W has been reached, with a slope efficiency better than 70%, which are the best performances ever reported on this material. Studies of conical refraction (CR) have recently revived. When a Gaussian light beam propagates along the optic axis of a biaxial crystal, under certain conditions a two ring-shaped beam can be observed, at the exit face of the crystal. Several publications describe this effect, theo-retically and experimentally [1–4]. Recent availability of long biaxial crystals, with good optical quality, facili-tates CR studies. Therefore, several applications of this effect have recently been investigated, such as optical tweezers [5], particle trapping [6], beam shaping [7–11], and microscopy [12]. There are also some publications about laser operation along an optic axis of a biaxial crys-tal, the first publication being [13]. Using a short (3 mm long) biaxial crystal of a CR-cut ytterbium-doped KGdWO 4 2 (KGW), the output polarization of their laser was modified, by translating the output coupler mirror. The researchers obtained a slope efficiency of 60% along the CR axis, which is similar to the value obtained for a classical N g -cut orientation. However, the threshold was 2× higher for CR orientation. A few years later, [14,15] presented a four-level conical refraction laser, made with neodymium-doped KGW. The researchers obtained both a Gaussian and CR output beam. They reported a slope efficiency close to the quantum defect limit [14], and no influence of any thermal effect over the measurement range (up to 3 W at 1067 nm) was observed. The thermo-optic properties of neodymium-doped KGW were studied in [16]. The researchers show the anisotropy of the thermo-optic properties, along this propagation direc-tion with a short crystal (1 mm long). However, the effect of CR inside the cavity, changing the light distribution in-side the crystal, is still not well-known. In this Letter, we report the first experimental results (to our knowledge) of a holmium-doped KYWO 4 2 (KYW) CR laser, showing laser action along the CR axis. Measurements near the optic axis have also been per-formed, in order to be able to compare CR and Gaussian beam intracavity laser performance.
Published: 2014
Full Text: View/download PDF

11. Direct measurement of the dielectric frame rotation in monoclinic crystals as a function of the wavelength

Author: Loren-Inacio, Patricia, Traum, Christian, Felix, Corinne, Segonds, Patricia, Boulanger, Benoit, Debray, Jérôme, Pena, Alexandra, Petit, Yannick, Ritz, Daniel, Montemezzani, Germano, Godner, Philippe, Ferrier, Alban, Segonds, Patricia, Optique et Matériaux (OPTIMA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Optique et microscopies (POM), Cristaux Massifs (CrisMass), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), FEE Gmbh, FEE GmBh, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Université Pierre et Marie Curie - Paris 6 (UPMC), Optique et Matériaux (NEEL - OPTIMA), Optique & Microscopies (NEEL - POM), Cristaux massifs (NEEL - CrisMass), and Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2014

12. Phase pure, monocrystalline bismuth ferrite nanoparticles for biomedical applications

Author: Clark, Gareth, Mugnier, Yannick, Le Dantec, Ronan, Gunko, Yurii, Rytz, Daniel, Galez, Christine, M. Volkov, Yu., Prina-Mello, Adriele, Symme, Univ. Savoie Mont Blanc, Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), FEE Gmbh, and FEE GmBh
Subjects: [SPI.MECA.GEME] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], Matériaux et outils pour la santé, ComputingMilieux_MISCELLANEOUS, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
Abstract: International audience
Published: 2014

13. Yb:CaGdAlO4 thin disk laser in continuous-wave

Author: Ricaud, Sandrine, Weichelt, Birgit, Goldner, P., Viana, Bruno, Abdou Ahmed, Marwan, Ritz, Daniel, Mottay, Eric, Georges, Patrick, Druon, Frédéric, Laboratoire Charles Fabry de l'Institut d'Optique / Elsa, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Institut für Strahwerkzeuge (IFSW), Universität Stuttgart [Stuttgart], Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), FEE Gmbh, FEE GmBh, Amplitude Systèmes, Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2011

14. Développement de nouveaux cristaux non linéaires pour la conception de dispositifs laser solides émettant dans l'ultraviolet

Author: J. Lejay, G. Aka, D. Rytz, Phillipe Villeval, Pascal Loiseau, L. Gheorghe, K. Xu, L. Mc Donagh, P. Georges, A. Maillard, F. Salin, Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), FEE Gmbh, FEE GmBh, Cristal Laser, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Laboratoire Charles Fabry de l'Institut d'Optique / Elsa, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Eolite Systems, ANR-06-BLAN-0169,UV-Borates,Recherche et développement de monocristaux de borates non linéaires pour de nouvelles applications dans le domaine de l'ultraviolet.(2006), and Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Abstract: National audience; Une technique prometteuse pour la réalisation de dispositifs laser solides émettant dans l'ultraviolet consiste à disposer en cascade plusieurs cristaux non linéaires générant des sommes de fréquence à partir d'une émission laser fondamentale située dans le proche infra-rouge. Cependant, à ce jour, peu de cristaux non linéaires offrent la possibilité de générer de manière efficace des longueurs d'onde voisines ou inférieures à 250 nm. Dans ce but, les plus gros efforts de recherche actuels s'orientent vers des cristaux contenant des groupements borate. Après une description des principaux cristaux non linéaires proposés pour ce type d'application, nous présenterons les études que nous menons sur des matériaux de type fluoroborate, dérivés des oxoborates de terre rare et de calcium TrCa4O(BO3)3 (Tr = terre rare), et sur des matériaux de structure huntite TrMe3(BO3)4 (Me = Al, Ga, Sc).
Published: 2009
Full Text: View/download PDF

15. Ultrashort pulses high power diode pumped laser based on a new ytterbium doped CaGdAlO4 crystal

Author: Boudeile, Justine, Papadopoulos, Dimitris N., Hanna, Marc, Druon, Frédéric, Georges, Patrick, Petit, Pierre-Olivier, Goldner, Philippe, Viana, Bruno, Ritz, Daniel, Laboratoire Charles Fabry de l'Institut d'Optique / Elsa, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), FEE Gmbh, FEE GmBh, and Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

16. Direct measurement of the dielectric frame rotation of monoclinic crystals as a function of the wavelength

Author: Benoît Boulanger, Alexandra Peña, Yannick Petit, Patricia Segonds, Daniel Rytz, Corinne Felix, Philippe Goldner, Jérôme Debray, C. Traum, Alban Ferrier, Germano Montemezzani, P. L. Inácio, Optique et Matériaux (NEEL - OPTIMA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Optique & Microscopies (NEEL - POM), Cristaux massifs (NEEL - CrisMass), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), FEE Gmbh, FEE GmBh, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Optique et Matériaux (OPTIMA), Optique et microscopies (POM), Cristaux Massifs (CrisMass), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), T2, CentraleSupélec-Université de Lorraine (UL)-CentraleSupélec-Université de Lorraine (UL), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)
Subjects: Materials science, business.industry, Measurements, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Polarization (waves), Crystals, 01 natural sciences, Molecular physics, Electronic, Optical and Magnetic Materials, 010309 optics, Wavelength, Optics, 0103 physical sciences, [CHIM]Chemical Sciences, Dielectrics, Crystal optics, 0210 nano-technology, business, Refractive index, Laser beams, Monoclinic crystal system
Abstract: International audience; We report a method based on Malus' law to directly measure the dielectric frame orientation of monoclinic crystals with an accuracy of 0.3°. This technique was validated by the study of Nd3+:YCa4O(BO3)3, Sn2P2S6, BiB3O6 and Eu3+:Y2SiO5
Published: 2013
Full Text: View/download PDF

17. Tunable trap depth for persistent luminescence by cationic substitution in Pr 3+ :K 1− x Na x NbO 3 perovskites

Author: Li, Liyi, Castaing, Victor, Rytz, Daniel, Sontakke, Atul, Katayama, Yumiko, Tanabe, Setsuhisa, Peng, Mingying, Viana, Bruno, Department of Chemistry, Hong Kong Baptist University, Hong Kong Baptist University (HKBU), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL), FEE, FEE GmBh, Kyoto University [Kyoto], and The China-Germany Research Center for Photonic Materials and Devices
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2018
Full Text: View/download PDF

18. Temperature-dependent evolution of crystallographic and domain structures in (K, Na, Li)(Ta, Nb)O3 piezoelectric single crystals

Author: Leopoldo Molina-Luna, Alexander Zintler, Daniel Rytz, Hairui Liu, Philippe Veber, Jurij Koruza, Mario Maglione, Department of Materials and Earth Sciences [Darmstadt], Technische Universität Darmstadt (TU Darmstadt), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Lumière Matière [Villeurbanne] (ILM), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, FEE, and FEE GmBh
Subjects: 010302 applied physics, Materials science, Acoustics and Ultrasonics, 02 engineering and technology, Crystal structure, [CHIM.MATE]Chemical Sciences/Material chemistry, Atmospheric temperature range, 021001 nanoscience & nanotechnology, 01 natural sciences, Ferroelectricity, Crystal, Condensed Matter::Materials Science, Tetragonal crystal system, Crystallography, 0103 physical sciences, Curie temperature, Orthorhombic crystal system, Electrical and Electronic Engineering, 0210 nano-technology, Instrumentation, Single crystal
Abstract: International audience; (K,Na)NbO 3 -based ferroelectric single crystals have recently undergone a substantial development, resulting in improved crystal quality and large piezoelectric coefficients, exceeding 700 pC/N, over a broad temperature range. However, further development necessitates a detailed understanding of the mechanisms defining the domain structure and its temperature evolution. This paper presents the investigation into the crystallographic structure and domain configurations of a (K,Na,Li)(Ta,Nb)O 3 single crystal over a broad temperature range. The crystal was grown by the submerged-seed solution growth technique and investigated using in situ transmission electron microscopy, X-ray diffraction, dielectric measurements, and polarized light microscopy. The lattice distortion, structural phase transitions, and domain configurations are reported. A transition from the lamellar orthorhombic to the rectangular tetragonal domain structure is observed upon heating. Moreover, the milky optical appearance of the crystal was investigated and found to result from the presence of regions with different domain configurations and domain sizes. The formation of these regions is related to the growth defects, which govern the domain formation when cooling below the Curie temperature.
Published: 2018
Full Text: View/download PDF

19. High-performance piezoelectric (K,Na,Li)(Nb,Ta,Sb)O3 single crystals by oxygen annealing

Author: Mikhail I. Afanasov, Philippe Veber, Mario Maglione, Jürgen Rödel, Pavel B. Fabritchnyi, Hairui Liu, Till Frömling, Eric A. Patterson, Jurij Koruza, Daniel Rytz, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Lumière Matière [Villeurbanne] (ILM), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Institute of Materials Science, Technische Universität Darmstadt (TU Darmstadt), FEE, FEE GmBh, Department of Chemistry, Lomonosov Moscow State University (MSU), Materials Science and Technology Division, Naval Research Laboratory (NRL), and This work was supported by the Erasmus Mundus International Doctoral School IDS-FunMat (Project No. 2013-07).
Subjects: Materials science, Polymers and Plastics, Ferroelectricity, Annealing (metallurgy), Analytical chemistry, Piezoelectricity, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Ion, Mössbauer spectroscopy, Leakage (electronics), Metals and Alloys, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Dielectric spectroscopy, Ceramics and Composites, Single crystals, Defects, Crystallite, 0210 nano-technology
Abstract: International audience; Ferroelectric single crystals exhibit the largest known piezoelectric constants and therefore show high potential for application in electronic devices, including sensors, actuators, and transducers. Their large properties, however, can only be fully exploited if the behavior is not influenced by lattice defects, formed during high-temperature processing. Such defects can inhibit domain-wall movement, increase leakage currents, and are predominantly responsible for the poor performance of the emerging ferroelectric crystals. Here, an approach to considerably enhance the piezoelectric and ferroelectric properties of (K,Na,Li)(Nb,Ta,Sb)O3 crystals by oxygen annealing is investigated. As compared to the non-annealed crystals, polarization, strain, and piezoelectric constant of the annealed sample were enhanced by a factor of two, resulting in an outstanding room-temperature value of piezoelectric constant d33 = 732 pC/N and a peak value of d33 = 1431 pm/V at the orthorhombic-tetragonal transition. The behavior was analyzed using electromechanical measurements, Mössbauer spectroscopy, and impedance spectroscopy, revealing decreased concentrations of both oxygen vacancies and Sb3+ ions after annealing. The findings indicate that the control of the defect chemistry enables these ferroelectric (K,Na)NbO3-based single crystals to outperform their polycrystalline counterparts and reach the values of lead-containing compositions. Moreover, the present strategy enables further detailed studies of the inherent crystal anisotropy and the possibilities for domain engineering.
Published: 2018
Full Text: View/download PDF

20. Orientation-dependent electromechanical properties of Mn-doped (Li,Na,K)(Nb,Ta)O3 single crystals

Author: Jürgen Rödel, Daniel Rytz, Philippe Veber, Jurij Koruza, Hairui Liu, Mario Maglione, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Institute of Materials Science, Technische Universität Darmstadt (TU Darmstadt), FEE, FEE GmBh, and the financial support from the Erasmus Mundus International Doctoral School IDSFunMat under the Project No. 2013-07 and German-French Doctoral School
Subjects: 010302 applied physics, Permittivity, Materials science, Physics and Astronomy (miscellaneous), Analytical chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, Dielectric, Coercivity, Atmospheric temperature range, 021001 nanoscience & nanotechnology, 01 natural sciences, Nuclear magnetic resonance, Electric field, 0103 physical sciences, Dielectric loss, 0210 nano-technology, Polarization (electrochemistry), Anisotropy
Abstract: International audience; Orientation and temperature dependence of dielectric and electromechanical properties of Mn-doped (Li,Na,K)(Nb,Ta)O3 single crystals were investigated. Samples exhibited very low dielectric losses, with tanδ between 0.03 and 0.05 over a broad temperature range between room temperature and 480 °C. Influences of the crystallographic structure and external electric field on polarization and strain parameters are discussed. The orientation-dependent electrical properties were ascribed to the anisotropic polarization rotation in the crystals. Higher maximum polarization, coercive field, and negative strain were achieved when the electric field was oriented along one of the spontaneous polarization directions. The highest maximum unipolar strain of 0.42% (at 3 kV/mm) and the normalized strain d 33 * of 1391 pm/V were obtained in the [001]PC-oriented sample at 100 °C, which was much higher than the values obtained for the [110]PC-oriented sample. Further insight of the phase transition behavior is given by comparing the temperature-dependence of the small- and large-signal dielectric and piezoelectric properties. The observed changes are rationalized by the different increase rates of the dielectric permittivity and piezoelectric coefficients with temperature.
Published: 2016
Full Text: View/download PDF

21. Influence of Ta5+ content on the crystallographic structure and electrical properties of [001]PC-oriented (Li,Na,K)(Nb,Ta)O3 single crystals

Author: Mario Maglione, Michaël Josse, Daniel Rytz, Jurij Koruza, Philippe Veber, Hairui Liu, Jürgen Rödel, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Institute of Materials Science, Technische Universität Darmstadt (TU Darmstadt), FEE, FEE GmBh, and Erasmus Mundus international doctoral school IDS-FunMat under the project number 2013-07 and the German-French Doctoral School.
Subjects: 010302 applied physics, Diffraction, Phase transition, Materials science, Crystal growth, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, General Chemistry, Dielectric, Crystal structure, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Piezoelectricity, Crystallography, Dipole, symbols.namesake, 0103 physical sciences, symbols, General Materials Science, 0210 nano-technology, Raman spectroscopy
Abstract: A series of centimeter-sized lead-free piezoelectric Li+- and Ta5+-modified (Na,K)NbO3 single crystals with an ABO3 perovskite structure was successfully grown by the top-seeded solution growth method. Effective segregation of the elements was considered in order to further develop the growth of Li+- and Ta5+-modified (Na,K)NbO3 single crystals. The crystallographic structure and electrical behaviour along the [001]PC orientation were studied. X-ray diffraction, Raman spectroscopy and dielectric studies reveal that the increase in Ta5+ content reduces the orthorhombic–tetragonal phase transition. Bipolar and unipolar strain curves were investigated at 2 kV mm−1. The highest bipolar and unipolar strains associated with a large-signal piezoelectric constant of 368 pm V−1 were achieved for Li0.02Na0.626K0.354Nb0.808Ta0.192O3. The asymmetric bipolar strain curves were observed and related to the existence of internal bias fields induced by defect dipoles, which were created during the crystal growth process.
Published: 2016
Full Text: View/download PDF

22. Refined orientation of the optical axes as a function of wavelength in three monoclinic double tungstate crystals KRE(WO_4)_2 (RE = Gd, Y or Lu)

Author: Frédéric Diaz, Alexandra Peña, Pavel Loiko, Jérôme Debray, Patricia Segonds, V. V. Filippov, Xavier Mateos, P. L. Inácio, Maria Cinta Pujol, Daniel Rytz, Konstantin Yumashev, Magdalena Aguiló, Marc Eichhorn, Benoît Boulanger, Center for Optical Technologies and Department of Materials Science and Engineering, Lehigh University, Optique et Matériaux (OPTIMA ), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Cristaux Massifs (CrisMass), FEE, FEE GmBh, Institut de Physique du Globe de Paris (IPGP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Institut Franco-Allemand de Recherches de Saint Louis (ISL), Institut Franco-Allemand de Recherches de Saint Louis, Física i Cristal.lografia de Materials, Física i Cristal·lografia de Nanomaterials, Química Física i Inorgànica, and Universitat Rovira i Virgili
Subjects: Materials science, Physics::Optics, 02 engineering and technology, Dielectric, 01 natural sciences, 010309 optics, chemistry.chemical_compound, Optics, Tungstate, 0103 physical sciences, Dispersion (optics), Crystal optics, Laser materials, business.industry, Òptica cristal·logràfica, Química, Dispersion, 021001 nanoscience & nanotechnology, Refraction, 2159-3930, Electronic, Optical and Magnetic Materials, Chemistry, Crystallography, Wavelength, chemistry, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, 0210 nano-technology, business, Refractive index, Monoclinic crystal system
Abstract: DOI: 10.1364/OME.6.002984 URL: https://www.osapublishing.org/ome/abstract.cfm?uri=ome-6-9-2984 Filiació URV: SI We measured a rotation of the dielectric frame as a function of wavelength of about 2° in the spectral range of 0.4-1.6 ¿m in the monoclinic double tungstate crystals, KRE(WO4)2 where RE = Gd, Y or Lu. We also refined the Sellmeier equations of their three principal refractive indices. By taking into account these data, we calculated the real orientation of the optical axes as a function of wavelength which is of key importance for the design of conical refraction lasers based on monoclinic double tungstate crystals.
Published: 2016
Full Text: View/download PDF

23. Flux growth of pure Tb2O3 and highly Yb3+-doped cubic Gd2O3 and Y2O3 crystals for optical isolation and laser applications (poster)

Author: Velasquez , M., Veber , P., Gadret , Gregory, Buse , G., Rytz , D., Druon , Frédéric, Viraphong , Oudomsack, Abdou Ahmed , Marwan, Georges , Patrick, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), FEE, FEE GmBh, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut für Strahwerkzeuge (IFSW), Stuttgart University, Pereira, Fatima, Institut de Chimie de la Matière Condensée de Bordeaux ( ICMCB ), Université de Bordeaux ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Charles Fabry ( LCF ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ), and Institut für Strahwerkzeuge ( IFSW )
Subjects: [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2014

24. Wavelength dependence of the orientation of optic axes in KGW

Author: Marc Tondusson, Romain Cattoor, Philippe Veber, Marc Eichhorn, Daniel Rytz, Lionel Canioni, Todor K. Kalkandjiev, Inka Manek-Hönninger, Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Institut Franco-Allemand de Recherches de Saint Louis (ISL), Institut Franco-Allemand de Recherches de Saint Louis, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Conerefringent Optics SL, FEE, and FEE GmBh
Subjects: Quantum optics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Physics and Astronomy (miscellaneous), business.industry, Wavelength range, General Engineering, General Physics and Astronomy, Optical axis, Wavelength, Optics, Orientation (geometry), Optoelectronics, business, Refractive index, Monoclinic crystal system
Abstract: International audience; We report on the wavelength dependence of the orientation of the optic axes in monoclinic crystals using undoped and neodymium-doped KGd(WO4)2 (KGW) samples. Measurements have been performed over a wide wavelength range from 420 up to 1,580 nm with more than 70 measurement points. This provides the widest measurement range of the optic axis variation ever reported in literature for KGW crystals. With such a measurement, which can be performed in principle in all biaxial crystals, the refractive indices values can be checked with a precision down to 10−3.
Published: 2014
Full Text: View/download PDF

25. Deep UV generation and direct DNA photointeraction by harmonic nanoparticles in labelled samples

Author: Davide Staedler, Luigi Bonacina, Marc Dubled, Thibaud Magouroux, Sandrine Gerber-Lemaire, Solène Passemard, Guillaume Stéphane Schneiter, Jean-Pierre Wolf, Daniel Rytz, Sebastian Schwung, Ecole Polytechnique Fédérale de Lausanne (EPFL), Group of Applied Physics [Geneva] (GAP), University of Geneva [Switzerland], FEE, FEE GmBh, Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), and Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])
Subjects: Materials science, Cell Survival, Ultraviolet Rays, Physics::Optics, Nanoparticle, [PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], ddc:500.2, law.invention, law, Cell Line, Tumor, Humans, General Materials Science, ComputingMilieux_MISCELLANEOUS, Photons, Photosensitizing Agents, business.industry, Second-harmonic generation, DNA, Human cell, Laser, Therapeutic modalities, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], Wavelength, Nanocrystal, Optoelectronics, Nanoparticles, business, Reactive Oxygen Species, Excitation
Abstract: A novel bio-photonics approach based on the nonlinear optical process of second harmonic generation by non-centrosymmetric nanoparticles is presented and demonstrated on malignant human cell lines. The proposed method allows to directly interact with DNA in absence of photosensitizing molecules, to enable independent imaging and therapeutic modalities switching between the two modes of operation by simply tuning the excitation laser wavelength, and to avoid any risk of spontaneous activation by any natural or artificial light source.
Published: 2014
Full Text: View/download PDF

26. Diode- pumped lasers using highly doped Yb:Gd2O3 and Yb:Y2O3 crystals grown by an original flux method (orale)

Author: Velasquez, Matias, Druon, Frédéric, Veber, Philippe, Janicot, Sylvie, Viraphong, Oudomsack, Buse, Gabriel, Abdou Ahmed, Marwan, Graf, Thomas, Rytz, Daniel, Georges, Patrick, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2013

27. Diode-pumped lasers using highly doped Yb:Gd2O3 and Yb:Y2O3 crystals grown by the flux method (orale)

Author: Druon, Frédéric, Velasquez, Matias, Veber, Philippe, Janicot, Sylvie, Viraphong, Oudomsack, Buse, Gabriel, Abdou Ahmed, Marwan, Graf, Thomas, Rytz, Daniel, Georges, Patrick, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2013

28. High power cw and fs Yb:CALGO thin-disk laser using diamond heat spreader (orale)

Author: Druon, Frédéric, Ricaud, Sandrine, Jaffrès, Anaël, Wentsch, Katrin, Suganuma, Akiko, Loiseau, Pascal, Weichelt, Birgit, Abdou Ahmed, Marwan, Voss, Andreas, Graf, Thomas, Rytz, Daniel, Hönninger, Clemens, Mottay, Eric, Viana, Bruno, Georges, Patrick, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Amplitude Systèmes, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC), Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, FEE GmBh, Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Universität Stuttgart [Stuttgart]
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Abstract: International audience; We present the study and results on high-power oscillators based on Yb:CALGO in thin-disk laser architecture using a diamond heat spreader for thermal management both in cw (spatially multimode and single-mode) and in femtosecond regime.
Published: 2013

29. Flux growth of highly Yb3+-doped cubic Gd2O3 laser crystals (orale)

Author: Velasquez, Matias, Veber, Philippe, Buse, Gabriel, Véron, Emmanuel, Rytz, Daniel, Druon, Frédéric, Janicot, Sylvie, Pechev, Stanislav, Viraphong, Oudomsack, Abdou Ahmed, Marwan, Georges, Patrick, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), FEE, FEE GmBh, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut für Strahwerkzeuge (IFSW), and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2013

30. High power Yb:CALGO thin-disk lasers in cw and fs regime (orale)

Author: Ricaud, Sandrine, Jaffres, Anael, Wentsch, Katrin, Suganuma, Akiko, Viana, Bruno, Loiseau, Pascal, Weichelt, Birgit, Abdou Ahmed, M., Voss, Andreas, Graf, Thomas, Rytz, Daniel, Hönninger, Clemens, Mottay, Eric, Hanna, Marc, Georges, Patrick, Druon, Frédéric, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut für Strahwerkzeuge (IFSW), Universität Stuttgart [Stuttgart], Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), FEE, FEE GmBh, Amplitude Systèmes, and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published: 2013

31. CALGO:Yb un matériau laser pour les impulsions brèves : qualité cristalline et conductivité thermique (orale)

Author: Jaffres, Anael, Suganuma, A, Ricaud, Sandrine, Viana, Bruno, Loiseau, P., Georges, Patrick, Druon, Frédéric, Rytz, Daniel, Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche de Chimie Paris (IRCP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2013

32. Flux growth and laser operation of highly Yb3+-doped cubic Gd2O3 laser crystals (orale)

Author: Velasquez, Matias, Veber, Philippe, Buse, Gabriel, Véron, Emmanuel, Rytz, Daniel, Druon, Frédéric, Janicot, Sylvie, Péchev, Stanislav, Viraphong, Oudomsack, Abdou Ahmed, M., Graf, Thomas, Georges, Patrick, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), FEE, FEE GmBh, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut für Strahwerkzeuge (IFSW), and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2013

33. Yb:CALGO thin-disk femtosecond oscillator (orale)

Author: Ricaud, Sandrine, Jaffres, Anael, Wentsch, Katrin, Suganuma, Akiko, Viana, Bruno, Loiseau, Pascal, Weichelt, Birgit, Abdou Ahmed, M., Voss, Andreas, Graf, Thomas, Rytz, Daniel, Hönninger, Clemens, Mottay, Eric, Georges, Patrick, Druon, Frédéric, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut für Strahwerkzeuge (IFSW), Universität Stuttgart [Stuttgart], Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), FEE, FEE GmBh, Amplitude Systèmes, and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published: 2013

34. First laser operation from diode-pumped highly doped Yb:Gd2O3 andYb:Y2O3 crystals grown by flux method (orale)

Author: Druon, Frédéric, Velázquez, Matias, Veber, Philippe, Janicot, Sylvie, Viraphong, Oudomsack, Buse, G., Abdou Ahmed, M., Graf, T., Rytz, Daniel, Georges, Patrick, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published: 2013

35. Harmonic nanoparticles for nonlinar bio-imaging and detection

Author: Yannick Mugnier, Luigi Bonacina, Jean-Pierre Wolf, Solène Passemard, Daniel Rytz, Davide Staedler, Sebastian Schwung, Andrii Rogov, Thibaud Magouroux, Cécile Joulaud, Ronan Le Dantec, Sandrine Gerber-Lemaire, Group of Applied Physics [Geneva] (GAP), University of Geneva [Switzerland], Femto (LCAR), Laboratoire Collisions Agrégats Réactivité (LCAR), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), FEE, FEE GmBh, Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées
Subjects: Materials science, Nonlinear microscopy, second harmonic generation, Rare event detection, [PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], Nanoparticle, Second-harmonic generation, Nanotechnology, nonlinear microscopy, 02 engineering and technology, Contrast (music), 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], 0104 chemical sciences, Bio imaging, Microscopy, Harmonic, nanoparticles, 0210 nano-technology
Abstract: Proc. SPIE 8611; International audience; In this contribution we present the motivations underlying the introduction of harmonic nanoparticles, i.e. Second harmonic contrast agents for nonlinear microscopy. Their properties will be discussed in the light of various biological applications including imaging of stem cells and rare event detection in physiological media.
Published: 2013
Full Text: View/download PDF

36. Yb:CALGO thin-disk lasers operating in femtosecond regime (orale)

Author: Ricaud, Sandrine, Jaffres, Anael, Wentsch, Katrin, Suganuma, Akiko, Viana, Bruno, Loiseau, Pascal, Weichelt, Birgit, Abdou Ahmed, M., Voss, Andreas, Graf, T., Rytz, Daniel, Hönninger, Clemens, Mottay, Eric, Hanna, Marc, Georges, Patrick, Druon, Frédéric, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut für Strahwerkzeuge (IFSW), Stuttgart University, Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), FEE, FEE GmBh, Amplitude Systèmes, and Universität Stuttgart [Stuttgart]
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published: 2013

37. Laser demonstration with highly doped Yb:Gd2O3 and Yb:Y2O3 crystals grown by an original flux method

Author: Frédéric Druon, Patrick Georges, Daniel Rytz, Thomas Graf, Gabriel Buse, Oudomsack Viraphong, Sylvie Janicot, Marwan Abdou Ahmed, Matias Velázquez, Philippe Veber, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, and FEE GmBh
Subjects: Materials science, Physics::Optics, Laser, 02 engineering and technology, Cubic crystal system, 01 natural sciences, law.invention, 010309 optics, Crystal, Sesquioxide, Optics, law, Condensed Matter::Superconductivity, 0103 physical sciences, Rare earth, Diode, Flux method, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Doping, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Sapphire, 0210 nano-technology, business
Abstract: International audience; We present, to the best of our knowledge, the first laser demonstration of an Yb-doped Gd2O3 cubic crystal. This crystal was obtained by the flux method using an original borate-based solvent, which was particularly well suited to the growth of rare earth sesquioxide crystals at half the working temperature of classical growth techniques. This flux method is a very interesting alternative for the production of laser sesquioxide crystals, not only because it provides access to new matrices of the cubic polymorph, but also because it permits high Yb3+-doping levels for these crystals. The first laser results of two highly Yb3+-doped sesquioxides, namely Gd2O3 and Y2O3, grown by this flux method are presented here, including the Ti:sapphire and diode pumping configurations. Laser efficiencies and emission spectra for these two crystals were studied and compared.
Published: 2013
Full Text: View/download PDF

38. Femtosecond Yb:CaGdAlO4 thin-disk oscillator

Author: Thommas Graf, Pascal Loiseau, Andreas Voss, Akiko Suganuma, Anaël Jaffrès, Bruno Viana, Eric Mottay, Daniel Rytz, Birgit Weichelt, Frédéric Druon, Clemens Hönninger, S. Ricaud, Patrick Georges, Marwan Abdou-Ahmed, Katrin Wentsch, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut für Strahwerkzeuge (IFSW), Universität Stuttgart [Stuttgart], Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), FEE, FEE GmBh, Amplitude Systèmes, ANR Femtocryble, and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, Pulse duration, 02 engineering and technology, Injection seeder, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Optics, Mode-locking, Thin disk, law, 0103 physical sciences, Femtosecond, Optoelectronics, 0210 nano-technology, business, Self-phase modulation, Bandwidth-limited pulse
Abstract: International audience; A mode-locked thin-disk laser based on Yb:CALGO is demonstrated for the first time. At an average output power of 28 W we obtained pulses with a duration of 300 fs and a pulse energy of 1.3 μJ. 197 fs pulses with 0.9 μJ of energy were achieved at an average output power of 20 W. The shortest pulse duration measured in our experiments was 135 fs with a spectrum centered at 1043 nm. The experiments also revealed a very broad tunability from 1032 to 1046 nm with sub-200 fs pulses
Published: 2012
Full Text: View/download PDF

39. CW and femtosecond Yb:CALGO thin disk oscillator

Author: Ricaud, Sandrine, Jaffres, Anael, Suganuma, Akiko, Viana, Bruno, Loiseau, P., Weichelt, Birgit, Wentsch, Katrin, Abdou-Ahmed, Marwan, Voss, Andreas, Graf, Thomas, Rytz, Daniel, Hönninger, Clemens, Mottay, Eric, Georges, Patrick, Druon, Frédéric, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, FEE GmBh, Amplitude Systèmes, and Universität Stuttgart [Stuttgart]
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published: 2012

40. Yb:CaGdAlO4 thin-disk

Author: F. Druon, Patrick Georges, Pascal Loiseau, Daniel Rytz, Anaël Jaffrès, Th. Graf, Marwan Abdou-Ahmed, Birgit Weichelt, S. Ricaud, Martin Delaigue, Andreas Voss, Bruno Viana, Eric Mottay, Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Chimie-Paristech, Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, FEE GmBh, Amplitude Systèmes, Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), and Universität Stuttgart [Stuttgart]
Subjects: Ytterbium, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Range (particle radiation), Multi-mode optical fiber, Materials science, business.industry, Slope efficiency, chemistry.chemical_element, Laser, law.invention, Power (physics), Optics, Thin disk, chemistry, law, Laser power scaling, business, ComputingMilieux_MISCELLANEOUS
Abstract: We present an Yb-CALGO thin-disk laser in continuous regime. In a slightly multimode configuration we obtain up to 29.5W of average power, corresponding to a slope efficiency of 40% and an optical-to-optical efficiency of 32%. We then design a monomode cavity, and achieve 25W of average power. The tuning range of the laser emission was from 1018 to 1052nm. In a Q-switch regime, we obtain more than 1 mJ at 100 Hz repetition rate, and 4.5W at 10 kHz repetition rate.
Published: 2012
Full Text: View/download PDF

41. Harmonic nanocrystals for biolabeling: a survey of optical properties and biocompatibility

Author: Sandrine Gerber-Lemaire, Ronan Le Dantec, Luigi Bonacina, Lucienne Juillerat-Jeanneret, Christelle Kasparian, Daniel Rytz, Rachid Hadji, Matthias Gerrmann, Jean-Pierre Wolf, Cécile Joulaud, Thibaud Magouroux, Gareth Clarke, Christine Galez, Yannick Mugnier, Sebastian Schwung, Daniel Ciepielewski, Davide Staedler, Solène Passemard, Jérôme Extermann, Group of Applied Physics [Geneva] (GAP), University of Geneva [Switzerland], Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), FEE, FEE GmBh, and Symme, Univ. Savoie Mont Blanc
Subjects: Optical Phenomena, Niobium, Barium Compounds, General Physics and Astronomy, 02 engineering and technology, 01 natural sciences, Signal, Nonlinear microscopy, Polyethylene Glycols, Nanomaterials, Nonlinear optical, Materials Testing, General Materials Science, Titanium, [PHYS.MECA.GEME] Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], General Engineering, Oxides, nonlinear microscopy, Hydrogen-Ion Concentration, 021001 nanoscience & nanotechnology, Fluorescence, Molecular Imaging, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], Harmonic, Zinc Oxide, 0210 nano-technology, Materials science, Optical contrast, Biocompatibility, harmonic nanoparticles, [PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], Nanotechnology, ddc:500.2, 010402 general chemistry, Hemolysis, Phosphates, Cell Line, Tumor, Humans, Colloids, [SPI.MECA.GEME] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], Photons, Staining and Labeling, Water, 0104 chemical sciences, Nanocrystal, Potassium, Nanoparticles, sense organs, Harmonic nanoparticles, cell labeling, Cell labeling
Abstract: International audience; Nonlinear optical nanocrystals have been recently introduced as a promising alternative to fluorescent probes for multiphoton microscopy. We present for the first time a complete survey of the properties of five nanomaterials (KNbO3, LiNbO3, BaTiO3, KTP, and ZnO), describing their preparation and stabilization and providing quantitative estimations of their nonlinear optical response. In the light of their prospective use as biological and clinical markers, we assess their biocompatibility on human healthy and cancerous cell lines. Finally, we demonstrate the great potential for cell imaging of these inherently nonlinear probes in terms of optical contrast, wavelength flexibility, and signal photostability.
Published: 2012

42. Yb:CaGdAlO4 Thin-Disk Laser

Author: Eric Mottay, Sandrine Ricaud, Birgit Weichelt, Anaël Jaffrès, Andreas Voss, Frédéric Druon, Bruno Viana, Pascal Loiseau, Patrick Georges, Marwan Abdou-Ahmed, Thomas Graf, Daniel Rytz, Martin Delaigue, Laboratoire Charles Fabry de l'Institut d'Optique / Lasers, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Chimie de la Matière Condensée de Paris (site ENSCP) (LCMCP (site ENSCP)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Chimie-Paristech, Institut für Strahwerkzeuge (IFSW), Stuttgart University, FEE, FEE GmBh, Amplitude Systèmes, Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), and Universität Stuttgart [Stuttgart]
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Multi-mode optical fiber, business.industry, Slope efficiency, 02 engineering and technology, Laser pumping, Injection seeder, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Optics, Thin disk, law, 0103 physical sciences, Optoelectronics, Prism, 0210 nano-technology, business, Tunable laser
Abstract: International audience; We present the first demonstration of an Yb:CALGO thin-disk laser. In a slightly multimode configuration we obtained up to 30 W of average power at a slope efficiency of 40% and an optical-to-optical efficiency of 32%. With a single-mode cavity, an average power of 25 W was achieved. A tuning range from 1018 to 1052nm could be demonstrated by inserting a prism into the cavity. In Q-switched regime, we obtained 1 mJ of pulse energy at a repetition rate of 100 Hz.
Published: 2011

43. Yb:CaGdAlO4 thin disk laser

Author: Ricaud, Sandrine, Weichelt, Birgit, Goldner, Philippe, Viana, Bruno, Abdou Ahmed, M., Rytz, Daniel, Mottay, Eric, Balembois, François, Georges, Patrick, Druon, Frédéric, Laboratoire Charles Fabry de l'Institut d'Optique / Lasers, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Institut für Strahwerkzeuge (IFSW), Universität Stuttgart [Stuttgart], Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Chimie-Paristech, FEE, FEE GmBh, Amplitude Systèmes, Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), and Stuttgart University
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Published: 2011

44. Single-mode output power enhancement of an extended cavity broad-area laser diode by an intracavity photorefractive crystal

Author: Daniel Rytz, G. Roosen, Vincent Reboud, Gilles Pauliat, Nicolas Dubreuil, Pierre Fournet, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), FEE, FEE GmBh, and Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Brightness, Materials science, Physics and Astronomy (miscellaneous), Holography, General Physics and Astronomy, Physics::Optics, 02 engineering and technology, 01 natural sciences, Semiconductor laser theory, law.invention, 010309 optics, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 42.40.Eq, 42.65.Hw, 42.55.Px, Optical amplifier, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Laser diode, business.industry, General Engineering, Single-mode optical fiber, Photorefractive effect, Laser, Optoelectronics, business
Abstract: International audience; Brightness improvement of high-power semiconductor lasers can be achieved by placing a broad-area laser diode, used as a pure optical amplifier, in an extended cavity. We report the modal behavior of an extended cavity which contains a photorefractive crystal. The dynamic holographic medium that plays the role of a spatial and spectral filter acts on the transverse and axial structure of the extended cavity modes and improves the single-mode operating range of the laser. An enhancement of the brightness in single-mode operation by a factor of seven has been experimentally observed thanks to the intracavity photorefractive crystal.
Published: 2007
Full Text: View/download PDF

45. Self-induced transverse mode selection in a photorefractive extended cavity laser diode

Author: Daniel Rytz, Gérald Roosen, Nicolas Dubreuil, Pierre Fournet, Vincent Reboud, Gilles Pauliat, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), FEE, and FEE GmBh
Subjects: Distributed feedback laser, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Laser diode, business.industry, Physics::Optics, 02 engineering and technology, Photorefractive effect, Laser pumping, Injection seeder, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, Transverse mode, Vertical-cavity surface-emitting laser, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business
Abstract: International audience; Previous works on photorefractive self-organizing laser cavities were about lasers that oscillate, prior the self-organization process occurs, on a set of axial modes sharing the same transverse structure. In a welldesigned broad-area laser diode extended cavity, we theoretically and experimentally demonstrate that the insertion of a photorefractive crystal can also affect the transverse modal structure to force the laser, initially oscillating on several transverse modes, to oscillate on a single transverse and axial mode. This spatial self-organization process leads to an enhancement of the single mode operating range of the laser.
Published: 2006

46. Laser diode made single-mode by a self-adaptive photorefractive filter

Author: Thierry Salva, Gérald Roosen, Sébastien Maerten, Nicolas Dubreuil, Daniel Rytz, Gilles Pauliat, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), FEE, and FEE GmBh
Subjects: 010302 applied physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Laser diode, Oscillation, business.industry, Single-mode optical fiber, Holography, Physics::Optics, Photorefractive effect, 01 natural sciences, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Organic photorefractive materials, Semiconductor laser theory, law.invention, 010309 optics, Adaptive filter, Optics, law, 0103 physical sciences, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, Nonlinear Sciences::Pattern Formation and Solitons
Abstract: International audience; A photorefractive crystal inserted inside an extended cavity laser diode is an adaptive frequency filter. Without any other selective element, the mutual adaptation between the modes and the dynamic photorefractive hologram leads to a single-longitudinal-mode oscillation. We demonstrated this adaptive process with a 810-nm diffraction limited laser diode and a BaTiO3 photorefractive crystal. We analyzed the transient spectra from the initially multimode oscillation until the single-mode steady state.
Published: 2002
Full Text: View/download PDF

47. Self-pumped phase conjugate BaTiO3:Rh ring mirror at 1.06 Μm: optimization of reflectivity, rise time and fidelity

Author: Nicolas Huot, Jean-Michel Jonathan, Gilles Pauliat, Daniel Rytz, Gérald Roosen, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 1998

48. Characterization and optimization of a ring self-pumped phase conjugate mirror at 1.06 Μm with BaTiO3:Rh

Author: Huot, Nicolas, Jonathan, Jean-Michel, Roosen, Gérald, Rytz, Daniel, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), FEE, and FEE GmBh
Subjects: OCIS codes: 190.5330, 190.5040, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Abstract: International audience; We optimize the ring self-pumped phase-conjugate mirror at 1.06 mm. With cw as well as nanosecond illumination the photorefractive efficiency is higher than 90%. Therefore the reflectivity (79%) is limited only by the transmission of the loop. Another relevant characteristic is the time needed to increase the reflectivity from 10% to 90% of its maximum value, which is as little as 12 s at 5 W cm22 in the cw regime. In the nanosecond regime, 90 J cm22 is needed. We study the response to an abrupt change in the incident wave front, taking into account the three-prism system inserted in the loop.
Published: 1998

49. Characterization of a photorefractive Rhodium doped Barium Titanate crystal at 1,06 µm

Author: Nicolas Huot, Jean-Michel Jonathan, Gilles Pauliat, Daniel Rytz, Gérald Roosen, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Abstract: International audience; We characterize Rh:BaTiO, by cw two-beam coupling experiments at 1.06 µm. We demonstrate that all our measurements are well described by a single-carrier, single-site model as soon as the incident intensity is large enough. The effective trap density is found to be equal to N,, = 6 X 10^16 cm-3 and the maximum measured gain is 23 cm-‘. At 20 W cm-2 with a measured absorption of 0.15 cm-‘, the time constant is 75 s.
Published: 1997

50. Self-pumped phase conjugation in a ring cavity at 1.06 µm in cw and nanosecond regimes using photorefractive BaTiO3:Rh

Author: Daniel Rytz, Jean-Michel Jonathan, Gérald Roosen, Nicolas Huot, Laboratoire Charles Fabry de l'Institut d'Optique / Manolia, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), FEE, and FEE GmBh
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Steady state, Materials science, business.industry, 02 engineering and technology, Photorefractive effect, Nanosecond, Ring (chemistry), 01 natural sciences, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, 010309 optics, Crystal, Lens (optics), 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, Phase conjugation
Abstract: International audience; We present self-pumped phase conjugation experiments in a ring cavity at 1.06 pm in a BaTiO,:Rh crystal both in the cw and in the nanosecond regime. The measured reflectivities are respectively 50% and 66%. At 4 W cme2 of cw illumination, it only takes 90 s to reach the steady state. A preliminary experiment of correction of the focusing effect of a lens is reported.
Published: 1997

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

54 results on '"FEE Gmbh"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources