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14 results on '"Richard, Moncorge"'

1. Simulation of dual-wavelength pumped 3.5 µm CW laser operation of Er:Ca$F_{2}$ in waveguide configuration

Author

Jean-Louis Doualan, Rémi Soulard, Zhiping Cai, H. Xu, Richard Moncorge, Saiyu Luo, Christophe Labbé, Department of Electronic Engineering (Xiamen University), Xiamen University, 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), and Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010302 applied physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, Physics::Optics, [CHIM.MATE]Chemical Sciences/Material chemistry, Cw laser, 010402 general chemistry, 01 natural sciences, Fluorescence, Waveguide (optics), 0104 chemical sciences, [SPI.MAT]Engineering Sciences [physics]/Materials, [PHYS.PHYS.PHYS-COMP-PH]Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph], [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Fiber laser, 0103 physical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, Dual wavelength, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, business, Absorption (electromagnetic radiation), Laser beams
Abstract

International audience; Based on a detailed spectroscopic investigation including excited-state absorption and fluorescence measurements, a simulation is developed to demonstrate multiwatt CW laser operation of an Er:Ca$F_{2}$ crystalline waveguide using single- or dual-wavelength pumping.

Published
2018

2. InGaN-LD-Pumped Continuous-Wave Deep Red Laser at 670 nm in Pr3+:LiYF4 Crystal

Author

Patrice Camy, Richard Moncorge, Zhiping Cai, Huiying Xu, Bin Xu, Saiyu Luo, Biao Qu, Yongjie Cheng, and Jean-Louis Doualan

Subjects
Materials science, Active laser medium, business.industry, Far-infrared laser, Slope efficiency, Laser pumping, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Laser linewidth, Optics, law, Diode-pumped solid-state laser, Optoelectronics, Laser power scaling, Electrical and Electronic Engineering, business
Abstract

We report the first laser operation at π-polarized 670.34-nm deep red laser in a 2-W InGaN-LD-pumped Pr 3+ :LiYF 4 (Pr:YLF) crystal with the aid of a 0.1-mm intracavity etalon, to the best of our knowledge. The maximum output power of this laser emission was up to 87.6 mW with slope efficiency of ~11.9$ % with respect to the absorbed pump power. The beam propagation factors in x-direction and y-direction were measured to be 1.49 and 1.05, respectively.

Published
2015

3. Record laser wavelength tunability of Pr:LiYF4 around 900nm

Author

Jean-Louis Doualan, Bin Xu, Zhiping Cai, Richard Moncorge, Biao Qu, Alain Braud, Huying Xu, and Patrice Camy

Subjects
Materials science, business.industry, Far-infrared laser, Laser pumping, Laser, law.invention, X-ray laser, Resonator, Optics, law, Diode-pumped solid-state laser, Optoelectronics, Laser power scaling, business, Tunable laser
Abstract

CW laser wavelength tunability of 70 nm is demonstrated in the 900nm spectral range by pumping a Pr:LiYF4 single crystal with an OPSL laser and by using a V-shape resonator and a quartz birefringent plate.

Published
2015

4. Fluoride Planar Waveguide Lasers

Author

Abdel Benayad, Western Bolaños, Florent Starecki, Patrice Camy, Gurvan Brasse, Jean-Louis Doualan, Richard Moncorge, and Alain Braud

Subjects
Waveguide lasers, Materials science, business.industry, Physics::Optics, Laser, Epitaxy, Optical quality, law.invention, Characterization (materials science), Condensed Matter::Materials Science, chemistry.chemical_compound, Optics, Planar, chemistry, law, Optoelectronics, business, Fluoride, Waveguide
Abstract

High optical quality rare-earth-doped YLiF4 layers were grown by the liquid phase epitaxy technic. Optical characterization, CW and Q-switch laser operation obtained with these fluorides waveguides will be presented and discussed in this communication. Article not available.

Published
2013

5. 100mJ level Yb: CaF2 regenerative amplifier for multipulse femtosecond regime

Author

Vincent Clet, Alizée Mareczko, Jean-Louis Doualan, Antoine Courjaud, Eric Mottay, Richard Moncorge, and Patrice Camy

Subjects
Pulse operation, Optics, Materials science, Absorption spectroscopy, Regenerative amplification, business.industry, Amplifier, Femtosecond, business, Regenerative amplifier, Diode
Abstract

We report an efficient diode pumped Yb:CaF2 regenerative amplifier delivering up to 100mJ at 10Hz repetition rate. Using this amplifier, we also report multi pulse operation in the femtosecond regime.

Published
2013

6. Mid-infrared fiber laser application: Er3+-doped chalcogenide glasses

Author

Jean-Louis Doualan, Guillaume Canat, Patrick Houizot, Richard Moncorge, Virginie Nazabal, Frédéric Smektala, Virginie Moizan, Jean-Luc Adam, Johann Troles, Jean-Pierre Cariou, Institut des Sciences Chimiques de Rennes ( ISCR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Ecole Nationale Supérieure de Chimie de Rennes-Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), 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 ) -Ecole 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 ), ONERA - The French Aerospace Lab ( Chatillon ), ONERA, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), 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), ONERA - The French Aerospace Lab [Châtillon], ONERA-Université Paris Saclay (COmUE), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)

Subjects
Materials science, Chalcogenide, Infrared, Analytical chemistry, Chalcogenide glass, 02 engineering and technology, 01 natural sciences, 7. Clean energy, law.invention, 010309 optics, chemistry.chemical_compound, law, Fiber laser, 0103 physical sciences, Radiative transfer, Emission spectrum, Absorption (electromagnetic radiation), business.industry, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Laser, chemistry, [ CHIM.MATE ] Chemical Sciences/Material chemistry, Optoelectronics, 0210 nano-technology, business
Abstract

International audience; Mid-infrared (IR) lasers are of interest for a variety of applications including environmental sensing, LIDAR and military counter measures. However, this wavelength range lacks powerful, coherent, robust and compact sources. A solution can lie in chalcogenide glasses as host materials for rare earth ions. With an extended infrared transparency, low phonon energy limiting the non radiative multiphonon relaxation rates and suitable rare earth solubility, sulfide glasses based on Ge-Ga-Sb-S system make available radiative transitions in the mid-IR range. The glasses with nominal composition of Ge20Ga5Sb10S65 doped with Er3+ (500 to 10000 ppm) were prepared by means of conventional melting and quenching method. The Er3+, widely studied in glass fibers for near-IR amplification, was initially selected for the transition 4I9/2 to 4I11/2 emitting at around 4.5 μm in order to demonstrate the ability of this sulfide composition for midinfrared fiber lasers application. In these objectives, absorption and emission spectra have been recorded and the radiative decay lifetime of excited levels (4I9/2, 4I11/2 and 4I13/2) has been determined. These last experimental results were compared with those obtained by Judd-Ofelt model from absorption cross-sections of all observable transitions. Therefore, the 4I9/2 radiative quantum efficiency was estimated at 67 %. The emission cross-section was 2.6x10-21 cm2 at 4.6 μm obtained by Fütchbauer-Ladenburg theory. The product of measured lifetime and emission cross-section for 4I9/2 -> 4I11/2 transition is about 1.87x10-24 cm2.s is comparable with that for GaLaS glasses. The fiber drawing of the Er3+ doped Ge20Ga5Sb10S65 glasses and measurements of optical losses in mid-IR are currently in progress and first results were presented.

Published
2007

7. Diode-pumped cw and fs laser based on Yb:CaF 2

Author

Jean-Louis Doualan, Andrea Lucca, François Balembois, Patrick Georges, Patrice Camy, Richard Moncorge, and Frédéric Druon

Subjects
Ytterbium, Materials science, business.industry, Amplifier, Pulse duration, chemistry.chemical_element, Laser, law.invention, Optics, Mode-locking, chemistry, law, Femtosecond, Dispersion (optics), Optoelectronics, business, Diode
Abstract

Results of diode-pumped cw and fs laser operation of an Yb 3+ :CaF 2 single crystal are reported. With a 5-at.-% Yb 3+ -doped sample we obtained 5.8 W output power at 1053 nm, for 15 W of incident pump power at 980 nm. In passively mode-locked diode-pumped regime, using a Brewster-cut, 5-at.-% Yb 3+ -doped sample and prisms for dispersion compensation, the oscillator provided pulses as short as 150 fs, with 880 mW of average power and up to 1.4 W average output power, with pulse duration of 220 fs, centred at 1049 nm. The laser wavelength could be tuned from 1018 nm to 1072 nm in cw regime and from 1040 nm to 1053 nm in mode-locked regime. Using chirped mirrors for dispersion compensation, we obtained up to 1.74 W of average power, with pulse duration of 230 fs. For all these reasons, Yb:CaF 2 crystal is showing the great potential as active medium for high average power femtosecond oscillators and as amplifier medium for femtosecond pulses.

Published
2005

9. Up-conversion in YLF:Yb3+,Tm3+laser crystals

Author

Maria-France Joubert, I. K. Razumova, Richard Moncorge, and Alexandra M. Tkachuk

Subjects
Ytterbium, education.field_of_study, Materials science, business.industry, Population, chemistry.chemical_element, Laser, Photon upconversion, law.invention, Semiconductor laser theory, Thulium, chemistry, law, Optoelectronics, Atomic physics, business, education, Luminescence, Excitation
Abstract

We have studied the Yb3+ (reversible reaction) Tm3+ nonradiative energy transfer processes responsible for population of the 1G4 thulium level under Yb3+ or Tm3+ selective laser excitation of YLF:Tm3+,Yb3+ crystal. The microparameters and the rates of the energy transfer via cross-relaxation schemes are determined. It is concluded that the process of populating the 1G4 thulium level is greatly affected by up-conversion processes not only from the 3H4 but also from the 3F4 level, proceeding within the static decay model.

Published
1998

10. Frequency doubling and sum-frequency mixing operation at 4692, 471, and 473 nm in Nd:YAG

Author

Alain Braud, François Balembois, Patrice Camy, Jean-Louis Doualan, Richard Moncorge, Bin Xu, and Zhiping Cai

Subjects
Blue laser, Materials science, business.industry, Statistical and Nonlinear Physics, Laser pumping, Laser, Atomic and Molecular Physics, and Optics, law.invention, X-ray laser, Optics, law, Fiber laser, Diode-pumped solid-state laser, Optoelectronics, Laser power scaling, business, Fabry–Pérot interferometer
Abstract

We report CW blue laser operation at 469.2, 471, and 473 nm by efficient intracavity second-harmonic generation and sum-frequency generation of the R2→Z5 (938.5 nm) and R1→Z5 (946 nm) F43/2→I49/2 intermultiplet transitions in Nd:YAG with an LiB3O5 nonlinear crystal. Single-wavelength laser operation at 469.2 nm and multiwavelength operation at 469.2, 471, and 473 nm are obtained with maximum output powers of 1.4 and 0.15 W, respectively, by using a glass etalon as frequency selector. The 469 nm blue laser is an efficient pumping source of Pr3+-doped materials.

Published
2012

11. Room Temperature CW Laser Efficiency Yb3+−Er3+ and Tm3+ Doped Silicates in the Infrared Region

Author

C. Li, C. Borel, J.C. Souriau, Richard Moncorge, and Ch. Wyon

Subjects
Ytterbium, Materials science, business.industry, chemistry.chemical_element, Yttrium, Laser, Phosphate glass, law.invention, Optical pumping, Erbium, chemistry.chemical_compound, Thulium, chemistry, law, Optoelectronics, Orthosilicate, business
Abstract

This paper reports the main spectroscopic characterizations and laser experiments carried out on two new crystal hosts: the! yttrium orthosilicate Y2SiO5 and the silicate oxyapatite Sr2Y8(SiO4)6O2 (hereafter noted SYS), doped with Ytterbium and Erbium for a 1,55 μm laser emission and with Thulium for a 2 μm emission. Four new lasers have been demonstrated at 1,554 μm, 1,576 μm, 1,99 μm and 2,05 μm for respectively Yb,Er:SYS; Yb,Er:Y2SiO5; Tm:SYS and Tm:Y2SiO5. If for the Yb,Er codoped materials laser performances are still poor compared with the Yb,Er phosphate glass, the Tm doped materials exhibit laser performances similar to the Tm:YAG and look very promising.

Published
1993

12. Short-pulse and high-repetition-rate diode-pumped Yb:CaF_2 regenerative amplifier

Author

Eric Mottay, Patrice Camy, Frédéric Druon, Richard Moncorge, Martin Delaigue, Jean-Louis Doualan, Sandrine Ricaud, Antoine Courjaud, Dimitris N. Papadopoulos, Yoann Zaouter, Patrick Georges, 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), Institut de la Lumiére Extrême (ILE), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), 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), 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), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, Bandwidth (signal processing), Pulse duration, Ranging, 02 engineering and technology, 01 natural sciences, Atomic and Molecular Physics, and Optics, Regenerative amplifier, 010309 optics, 020210 optoelectronics & photonics, Optics, Regenerative amplification, Fiber laser, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, business, Laser beams, Diode
Abstract

International audience; We present a diode-pumped regenerative amplifier based on an Yb:CaF2 crystal optimized to produce short pulses for various repetition rates ranging from 100 Hz to 10 kHz. The shortest pulse duration generated is 178 fs, and the corresponding energy is 1:4 mJ before compression (620 μJ after), at a repetition rate of 500 Hz for 16 W of pump power. The bandwidth is 10 nm centered at 1040 nm. Higher repetition rate regimes have also been explored, allowing an optical-to-optical efficiency up to 10% at a high repetition rate.

Published
2010

13. Radiative and Non-Radiative Recombinations at Er Centers in GaAlAs

Author

Taha Benyattou, Djelloul Seghier, Gérard Guillot, Marie-Noelle Charasse, Pierre Galtier, and Richard Moncorge

Subjects
symbols.namesake, Materials science, Photoluminescence, Auger effect, Excited state, Exciton, symbols, Radiative transfer, Atomic physics, Ground state, Excitation, Molecular beam epitaxy
Abstract

Photoluminescence (PL) of Molecular Beam Epitaxy grown Er doped Ga 0.55Al0.45As has been studied under continuous and pulsed laser excitation . The observed PL lines are attributed to transitions from the first excited stated 4I13/2 to the ground state 4I15/2 . The life time of the 4I13/2 level is found to be 1 ms at 10K, which is comparable to the decay time observed in insulators.Using two-beam experiments we show that there are losses (Auger effect) that occur during the PL excitation.We propose the following model for the Er PL excitation process: excitons bound to Er are created and decay non radiatively by energy transfer to the rare earth (which is the cause of the Er related PL) or to free carriers by Auger effect (which is the cause of the observed losses).

Published
1989

14. 57-mJ 20-Hz multipass laser amplifier based on Yb: CaF2crystals

Author

Alain Pellegrina, Florence Friebel, Jean-Louis Doualan, Patrick Georges, Frédéric Druon, Dimitris N. Papadopoulos, Richard Moncorge, and Patrice Camy

Subjects
Ytterbium, Materials science, business.industry, Amplifier, chemistry.chemical_element, Laser, Pulse shaping, law.invention, Optics, Regenerative amplification, chemistry, law, Laser amplifiers, Thermal lensing, business
Abstract

We are presenting a 57 mJ multipass amplifier based on Yb:CaF2 operating at 20 Hz. Special attention has been given to the thermal measurement and management in order to push it to the 100 Hz regime.

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