Prof. Georges Boulon Profile

Prof. Georges Boulon

at Univ Claude Bernard Lyon 1

SPIE Involvement:

Author

Proceedings Article | 13 January 2017 Paper

Design and characterization of Yb and Nd doped transparent ceramics for high power laser applications: recent advancements

A. Lapucci, M. Vannini, M. Ciofini, A. Pirri, M. Nikl, J. Li, L. Esposito, V. Biasini, J. Hostasa, T. Goto, G. Boulon, R. Maksimov, L. Gizzi, L. Labate, G. Toci

Proceedings Volume 10254, 102540E (2017) https://doi.org/10.1117/12.2257409

KEYWORDS: Ceramics, Ytterbium, Neodymium, High power lasers, Nd:YAG lasers, Doping, Lutetium, Surface plasmons, YAG lasers, Garnet

Read Abstract +

Proceedings Article | 1 August 2007 Paper

Yb³⁺-doped CaF₂ cubic fluoride crystal: spectroscopic properties, concentration quenching analysis, and laser optimization

G. Boulon, M. Ito, Y. Guyot, C. Goutaudier, A. Brenier, A. Jouini, H. Sato, T. Fukuda

Proceedings Volume 6785, 678503 (2007) https://doi.org/10.1117/12.755474

KEYWORDS: Ytterbium, Crystals, Ions, Laser crystals, Fluorine, Absorption, YAG lasers, Luminescence, Semiconductor lasers, Diodes

Read Abstract +

Proceedings Article | 28 February 2006 Paper

Comparative performance of passively Q-switched diode-pumped Yb:GGG, Yb:YAG, and Yb-doped tungstates lasers using Cr⁴⁺ -doped garnets

Y. Kalisky, O. Kalisky, U. Rachum, G. Boulon, A. Brenier

Proceedings Volume 6100, 61001K (2006) https://doi.org/10.1117/12.643882

KEYWORDS: Ytterbium, Semiconductor lasers, Crystals, Q switched lasers, Laser crystals, Chromium, YAG lasers, Modulation, Garnet, Diodes

Read Abstract +

Proceedings Article | 12 October 2005 Paper

EPR and optical properties of CaF2:Yb single crystals

G. Leniec, S. Kaczmarek, G. Boulon

Proceedings Volume 5958, 595825 (2005) https://doi.org/10.1117/12.622501

KEYWORDS: Ytterbium, Crystals, Ions, Absorption, Magnetism, Fluorine, Raman spectroscopy, Temperature metrology, Phonons, Ferromagnetics

Read Abstract +

Electron paramagnetic resonance (EPR) measurements of CaF₂:Yb (5 mol. %) single crystals were performed for lattice sites substituted by Yb ions and also for the possibility of Yb³⁺ pairs arising. Among eight lines observed in the EPR spectrum, with g = 4.293, 4.1, 3.965, 3.665, 3.433, 3.13, 3.054, 2.894 we think mainly the lines coming from different isotopes of Yb³⁺ isolated ions of cubic symmetry one can distinguish: ¹⁷⁰Yb³⁺ I=0, ¹⁷¹Yb³⁺ I=1/2 and ¹⁷³Yb³⁺ I=5/2, but one can not exclude the lines coming from Yb³⁺ pairs. All of the lines have got an axial symmetry along the crystallographic axis, since the lines do not move with angular variation in the planes parallel and perpendicular to the axis. One can observe also the extra line in magnetic field orientation in every plane at 45°, with the B₀≈191 mT. The unidentified line corresponds to non-axial Yb³⁺ center or unknown impurity. The components of A and g tensors of the spin Hamiltonian for cubic symmetry were calculated. Temperature dependence of EPR lines shows agreement with the Curie law for most of the lines. Peak-to-peak linewidth changes continuously within 20 mT range for "as-grown" crystals, while shows distinct increase above 25 K for γ-irradiated ones. It suggests strong ferromagnetic coupling between neighbours Yb³⁺ and Yb²⁺ ions the latter being created due to Compton electron capture. So, Yb³⁺ co-exists with Yb²⁺ after the Yb³⁺-Yb²⁺ conversion under influence of γ-irradiation and/or annealing in hydrogen. It seems the Yb²⁺ centers arising in CaF₂:Yb (5 mol. %) single crystal after γ-irradiation are related to Yb³⁺, as an effect of recharging one of Yb³⁺ ion from a pair. Absorption measurements of CaF₂ highly doped with Yb³⁺ (0.5 mol. %, 5 mol. % and 30 mol. %) reveal the shifting of the IR maxima of 921 and 980 nm characteristic for 0.5 mol. % doping of Yb³⁺ towards the centrum of IR band (927 and 976 for 30 mol. % of Yb³⁺). Raman spectrum shows localized phonon centered at about 64 cm^-1 being confirmation of the Yb³⁺ pairs presence in the 5 mol. % of Yb³⁺ doped CaF₂ crystal.

Proceedings Article | 8 July 2004 Paper

Efficient diode-pumped Nd:KGW laser grown by top nucleated floating crystal method: Part II

Yehoshua Kalisky, Leonid Kravchik, Georges Boulon, G. Metrat, Alain Brenier, Milan Kokta

Proceedings Volume 5332, (2004) https://doi.org/10.1117/12.529371

KEYWORDS: Crystals, Laser crystals, Semiconductor lasers, Diodes, Neodymium, Q switched lasers, Absorption, Mirrors, Chromium, Modulation

Read Abstract +

Proceedings Article | 9 April 2003 Paper

Efficient diode-pumped Nd:KGd(WO4)2 laser grown by top nucleated floating crystal method

Georges Boulon, G. Metrat, N. Muhlstein, Alain Brenier, Leonid Kravchik, Yehoshua Kalisky

Proceedings Volume 5131, (2003) https://doi.org/10.1117/12.513519

KEYWORDS: Crystals, Laser crystals, Diodes, Semiconductor lasers, Neodymium, Absorption, YAG lasers, Mirrors, Modes of laser operation, Q switched lasers

Read Abstract +

Proceedings Article | 9 April 2003 Paper

Concentration dependence of radiative and nonradiative energy transfers in rare-earth-doped laser crystals grown from a new method based on gradient concentration fiber single crystals

Georges Boulon, L. Laversenne, C. Goutaudier, Y. Guyot, Marie-Therese Cohen-Adad

Proceedings Volume 5131, (2003) https://doi.org/10.1117/12.513518

KEYWORDS: Ions, Laser crystals, Energy transfer, Crystals, YAG lasers, Luminescence, Erbium, Ytterbium, Doping, Absorption

Read Abstract +

Proceedings Article | 1 November 1997 Paper

Nonlinear single-crystal fibers of undoped and rare earth-doped niobates: growth by L.H.P.G., spectroscopy and second harmonic generation

Gisele Foulon, Michel Ferriol, Alain Brenier, Marie-Therese Cohen-Adad, Georges Boulon

Proceedings Volume 3176, (1997) https://doi.org/10.1117/12.293464

Read Abstract +

Proceedings Article | 11 April 1996 Paper

Static and dynamic effects in sensitized laser crystals

Voicu Lupei, Aurelia Lupei, Georges Boulon

Proceedings Volume 2772, (1996) https://doi.org/10.1117/12.238089

KEYWORDS: Ions, Energy transfer, Crystals, Thulium, Satellites, Absorption, Laser crystals, Optical spheres, Chromium, YAG lasers

Read Abstract +

Proceedings Article | 16 August 1994 Paper

Spectroscopic bases of performance enhancement of two-micron lasers by Fe3+ sensitization

Voicu Lupei, Aurelia Lupei, S. Bonea, P. Nanau, Georges Boulon, Christian Pedrini, Alain Brenier, Maria Elejalde Garcia

Proceedings Volume 2206, (1994) https://doi.org/10.1117/12.184619

KEYWORDS: Ions, Crystals, Absorption, Garnet, Energy transfer, Iron, Spectroscopy, Thulium, Oxygen, Luminescence

Read Abstract +

Proceedings Article | 27 July 1994 Paper

Spectroscopic properties, energy transfer dynamics, and laser performance of thulium-holmium laser systems

Yehoshua Kalisky, Stanley Rotman, Georges Boulon, Christian Pedrini, Alain Brenier

Proceedings Volume 2138, (1994) https://doi.org/10.1117/12.181358

KEYWORDS: Energy transfer, Thulium, Pulsed laser operation, Holmium, Spectroscopy, Ions, Laser systems engineering, Absorption, Laser crystals, Chromium

Read Abstract +

Proceedings Article | 13 August 1993 Paper

Tm+3 decay in chromium-thulium-holmium-doped yttrium aluminum garnet at liquid helium temperatures

Stanley Rotman, Avishay Eyal, Yehoshua Kalisky, Alain Brenier, Christian Pedrini, Georges Boulon, F. Hartmann

Proceedings Volume 1972, (1993) https://doi.org/10.1117/12.151083

KEYWORDS: Ions, Chromium, Thulium, YAG lasers, Crystals, Holmium, Energy transfer, Nd:YAG lasers, Neodymium, Liquids

Read Abstract +

Proceedings Article | 17 June 1993 Paper

Trivalent iron as sensitizer for the infrared emission of laser-active rare-earth ions

Voicu Lupei, Georges Boulon, Alain Brenier, Christian Pedrini, Christine Madej, Maria Elejalde Garcia, Aurelia Lupei, Carmen Tiseanu, Serban Georgescu

Proceedings Volume 1864, (1993) https://doi.org/10.1117/12.146887

KEYWORDS: Iron, Ions, Thulium, Crystals, Luminescence, Absorption, Garnet, Infrared radiation, Information operations, Energy transfer

Read Abstract +

Proceedings Article | 1 November 1990 Paper

Optical properties of solid-state laser-type materials in the near IR

Alain Brenier, Claudine Garapon, Christine Madej, Bernard Moine, Richard Moncorge, Andre Monteil, Christian Pedrini, Georges Boulon

Proceedings Volume 1341, (1990) https://doi.org/10.1117/12.23104

KEYWORDS: Ions, Chromium, Thulium, Crystals, Holmium, Absorption, Laser crystals, Energy transfer, Solid state lasers, Erbium

Read Abstract +

Showing 5 of 14 publications

SPIE Conference Volume | 1 December 1989

French-Israeli Workshop on Solid State Lasers

Conference Committee Involvement (1)

French-Israeli Workshop on Solid State Lasers

1 June 1989 | Jerusalem, Israel

Keywords/Phrases

Search In:

Publication Years