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167 results on '"Traynor N"'

1. Watt-level green random laser at 532 nm by SHG of a Yb-doped fiber laser

Author

Rota-Rodrigo, S., Gouhier, B., Dixneuf, C., Antoni-Micollier, L., Guiraud, G., Leandro, D., Lopez-Amo, M., Traynor, N., and Santarelli, G.

Subjects
Physics - Optics
Abstract

We have developed a Watt-level random laser at 532 nm. The laser is based on a 1064 nm random distributed ytterbium-gain assisted fiber laser seed with a 0.35 nm line-width 900mW polarized output power. A study for the optimal length of the random distributed mirror was carried out. An ytterbium-doped fiber master oscillator power amplifier architecture is used to amplify the random seeder laser without additional spectral broadening up to 20 W. By using a periodically poled lithium niobate (PPLN) crystal in a single pass configuration we generate in excess of 1 W random laser at 532 nm by second harmonic generation with an efficiency of 9 %. The green random laser exhibits an instability <1 %, optical signal to noise ratio >70 dB, 0.1 nm linewidth and excellent beam quality.

Published
2019
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2. Magnetism in artificial Ruddlesden-Popper iridates leveraged by structural distortions

Author

Meyers, D., Cao, Yue, Fabbris, G., Robinson, Neil J., Hao, Lin, Frederick, C., Traynor, N., Yang, J., Lin, Jiaqi, Upton, M. H., Casa, D., Kim, Jong-Woo, Gog, T., Karapetrova, E., Choi, Yongseong, Haskel, D., Ryan, P. J., Horak, Lukas, Liu, X., Liu, Jian, and Dean, M. P. M.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

We report on the tuning of magnetic interactions in superlattices composed of single and bilayer SrIrO$_3$ inter-spaced with SrTiO$_3$. Magnetic scattering shows predominately $c$-axis antiferromagnetic orientation of the magnetic moments for the bilayer justifying these systems as viable artificial analogues of the bulk Ruddlesden-Popper series iridates. Magnon gaps are observed in both superlattices, with the magnitude of the gap in the bilayer being reduced to nearly half that in its bulk structural analogue, Sr$_3$Ir$_2$O$_7$. We assign this to modifications in the anisotropic exchange driven by bending of the $c$-axis Ir-O-Ir bond and subsequent local environment changes, as detected by x-ray diffraction and modeled using spin wave theory. These findings explain how even subtle structural modulations driven by heterostructuring in iridates are leveraged by spin orbit coupling to drive large changes in the magnetic interactions., Comment: 5 pages, 4 figures

Published
2017
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3. Two-dimensional ${J}_{\rm eff}$ = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices

Author

Hao, L., Meyers, D., Frederick, C., Fabbris, G., Yang, J. Y., Traynor, N., Horak, L., Kriegner, D., Choi, Y. S., Kim, J. W., Haskel, D., Ryan, P. J., Dean, M. P. M., and Liu, J.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

We report an experimental investigation of the two-dimensional ${J}_{\rm eff}$ = 1/2 antiferromagnetic Mott insulator by varying the interlayer exchange coupling in [(SrIrO$_3$)$_1$, (SrTiO$_3$)$_m$] ($m$ = 1, 2 and 3) superlattices. Although all samples exhibited an insulating ground state with long-range magnetic order, temperature-dependent resistivity measurements showed a stronger insulating behavior in the $m$ = 2 and $m$ = 3 samples than the $m$ = 1 sample which displayed a clear kink at the magnetic transition. This difference indicates that the blocking effect of the excessive SrTiO$_3$ layer enhances the effective electron-electron correlation and strengthens the Mott phase. The significant reduction of the Neel temperature from 150 K for $m$ = 1 to 40 K for $m$ = 2 demonstrates that the long-range order stability in the former is boosted by a substantial interlayer exchange coupling. Resonant x-ray magnetic scattering revealed that the interlayer exchange coupling has a switchable sign, depending on the SrTiO$_3$ layer number $m$, for maintaining canting-induced weak ferromagnetism. The nearly unaltered transition temperature between the $m$ = 2 and the $m$ = 3 demonstrated that we have realized a two-dimensional antiferromagnet at finite temperatures with diminishing interlayer exchange coupling., Comment: 4 figures

Published
2017
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17. Watt-level narrow-linewidth fibered laser source at 852 nm for FIB application

Author

Antoni-Micollier, L., primary, Viteau, M., additional, Battelier, B., additional, Cadier, B., additional, Comparat, D., additional, Desruelle, B., additional, Guiraud, G., additional, Pinsard, E., additional, Reveillard, M., additional, Rota-Rodrigo, S., additional, Stern, G., additional, Traynor, N., additional, and Santarelli, G., additional

Published
2018
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20. Tunable 30W all-fiber laser emitting around 1850 nm

Author

Poncelet Kentin, Guiraud Germain, Traynor Nick, Hilico Adèle, and Santarelli Giorgio

Subjects
Physics, QC1-999
Abstract

We have demonstrated a tunable polarization maintaining thulium-doped fiber laser spanning the 1830nm-1880nm range with a fiber-coupled output power as high as 30W CW. The high- power booster stage is made using double clad fibers pumped with 793nm laser diodes.

Published
2024
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24. Impact of x-ray dose on track formation and data analysis for CR-39-based proton diagnostics

Author

Rinderknecht, H. G., primary, Rojas-Herrera, J., additional, Zylstra, A. B., additional, Frenje, J. A., additional, Gatu Johnson, M., additional, Sio, H., additional, Sinenian, N., additional, Rosenberg, M. J., additional, Li, C. K., additional, Séguin, F. H., additional, Petrasso, R. D., additional, Filkins, T., additional, Steidle, Jeffrey A., additional, Steidle, Jessica A., additional, Traynor, N., additional, and Freeman, C., additional

Published
2015
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25. Solid core microstructured optical fibers from chalcogenide glasses for photonic applications

Author

Smektala, F., Gregory Gadret, Mohammed El-Amraoui, Jean-Charles Jules, Sophie Salaün, Frédéric Desevedavy, Troles, J., Patrick Houizot, Brilland, L., Traynor, N., Gilles Renversez, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Chimiques de Rennes (ISCR), 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), Plate-Forme d'Etudes et de Recherche sur les Fibres Optiques Spéciales (PERFOS), association PERFOS, Institut FRESNEL (FRESNEL), Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), 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), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), 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 ), Verres et céramiques ( VC ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ), Plate-Forme d'Etudes et de Recherche sur les Fibres Optiques Spéciales ( PERFOS ), Institut FRESNEL ( FRESNEL ), Aix Marseille Université ( AMU ) -Ecole Centrale de Marseille ( ECM ) -Centre National de la Recherche Scientifique ( CNRS ), and Klein, Sandra

Subjects
[CHIM] Chemical Sciences, [CHIM]Chemical Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

26. Mélanges paramétriques large bande permettant l'amorçage d'un continuum visible dans une fibre optique

Author

Lesvigne-Buy, Christelle, Couderc, Vincent, Tonello, Alessandro, Leproux, Philippe, Barthélémy, Alain, Lacroix, S., Traynor, N., Monteville, A., Lebraud, Sophie, PHOTONIQUE, XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
stomatognathic diseases
Abstract

Présentation orale

Published
2007

27. Preparation of Chalcogenide Step-Index and Micro-Structured Fiber for Telecommunication

Author

Godet, J.-L., Derbal, H., Cherukulappurath, S., de Araújo, Cid, Briois, V., Pradel, A., Messaddeq, Y., Nalin, M., Trolès, J., Smektala, F., Brillant, L., Houizot, Patrick, Desevedavy, F., Boudebs, Georges, Chartier, T., Traynor, N., Laboratoire d'Ingéniérie des Systèmes Automatisés (LISA), Centre National de la Recherche Scientifique (CNRS)-Université d'Angers (UA), Propriétés Optiques des Matériaux et Applications (POMA), Departamento de Fisica, Universidade Federal de Pernambuco, Universidade Federal de Pernambuco [Recife] (UFPE), Synchrotron SOLEIL, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Laboratorio dos Materiais Fotônicos, Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University (UNESP), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-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)-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 (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), acsysteme, Laboratoire de Photonique d'Angers (LPHIA), Université d'Angers (UA), IRCER - Axe 1 : procédés céramiques (IRCER-AXE1), Institut de Recherche sur les CERamiques (IRCER), Institut de Chimie du CNRS (INC)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Plate-Forme d'Etudes et de Recherche sur les Fibres Optiques Spéciales (PERFOS), association PERFOS, Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), 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), Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université d'Angers (UA)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), 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), and Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB)

Subjects
Optical fiber, Materials science, Chalcogenide, chemistry.chemical_element, Chalcogenide glass, Germanium, 02 engineering and technology, 01 natural sciences, law.invention, 010309 optics, chemistry.chemical_compound, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Fiber, ComputingMilieux_MISCELLANEOUS, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, chemistry, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, business, Tellurium, Step-index profile, Photonic-crystal fiber
Abstract

Chalcogenide glasses are based on sulfur, selenium, tellurium and the addition of other elements such as arsenic, germanium, antimony, gallium, etc. These glasses combine high non linear properties with large infrared transmission from 0.5 ? 1 µ m to 12 ? 18 µ m depending on the composition. This work presents recent studies, concerning non linear optical properties of chalcogenide glasses and the elaboration of single mode fibers. Classical step index fibers and several complex and regular holey fibers from chalcogenide glasses have been realized by a stack and draw technique which were optically characterized by near field spectroscopy at 1,55 µ m.

Published
2006

28. Recent advances in the development of holey optical fibers based on sulfide glasses

Author

Smektala , F., Brilland , L., Chartier , T., Nguyen , T.N, Troles , J., Niu , Y.F, Danto , S., Traynor , N., Jouan , T., Klein, Sandra, Laboratoire de Physique de l'Université de Bourgogne ( LPUB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Laboratoire de Physique de l'Université de Bourgogne (LPUB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), and Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB)

Subjects
Condensed Matter::Soft Condensed Matter, chalcogenide, sulfide, optical fibers, microstructured fibers, photonic crystal fibers, glasses CHALCOGENIDE GLASSES, TELECOMMUNICATIONS, Physics::Optics, MULTIPOLE METHOD, holey fibers, Condensed Matter::Disordered Systems and Neural Networks
Abstract

International audience; Microstructured optical fibers as new optical objects have been developed in the recent past years, firstly from silica glass and then from other oxide glasses such as tellurite or different heavy cations oxide glasses. However very few results have been reported concerning non-oxide glasses and more particularly chalcogenide glasses. In a photonic crystal fiber the arrangement of air holes along the transverse section of the fiber around a solid glassy core leads to unique optical properties, such as for example broadband single-mode guidance, adjustable dispersion, nonlinear properties. Since the effective modal area is adjustable thanks to geometrical parameters, chalcogenide microstructured fibers with small mode area are of interest for nonlinear components because of the intrinsic non linearity of chalcogenide glasses, several order of magnitude above these of the reference silica glass (100 to 1000 times the non linearity of silica glass). On the other hand, chalcogenide holey fibers with large mode area are of interest for infrared power transmission, in a wavelength range out of reach of silica fibers, and more particularly in the 3-5 mu m atmospheric window. The aim of this paper is to present more specifically the recent results that have been achieved in the elaboration, light guidance and characterization of photonic crystal fibers from the sulfide Ge20Ga5Sb10S65 glass, which presents a large transparency window from 600 nm to 11 mu m.

Published
2006

38. Recent progress on the realization of chalcogenides photonic crystal fibers

Author

Brilland, L., primary, Houizot, P., additional, Troles, J., additional, Désévédavy, F., additional, Coulombier, Q., additional, Fatome, J., additional, Fortier, C., additional, Smektala, F., additional, Messadd, K., additional, Kibler, B., additional, Pitois, S., additional, Gadret, G., additional, Finot, C., additional, Nguyen, T., additional, Chartier, T., additional, Thual, M., additional, Renversez, G., additional, Traynor, N., additional, and Adam, J. L., additional

Published
2009
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