Mr. Jean-François Gleyze Profile

Jean-François Gleyze

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Publications (14)

Proceedings Article | 24 November 2023 Poster

MELBA: A testbed to study the impact of pulse characteristics on laser-induced damage in UV range and nanosecond regime

Sylvain Grosjean, Charles Bouyer, Martin Cormier, Jean-François Gleyze, Nadja Roquin, Jean-Yves Natoli, Laurent Lamaignère

Proceedings Volume PC12726, PC127261F (2023) https://doi.org/10.1117/12.2685226

KEYWORDS: Ultraviolet radiation, Laser induced damage, Temporal resolution, Laser scattering, Wave propagation, Wave plates, Switching, Streak cameras, Spatial light modulators, Silica

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Proceedings Article | 24 November 2023 Presentation

Stimulated Brillouin scattering induced by a temporal modulated nanosecond UV laser beam

Rachel Nuter, Charles Bouyer, Jean-François Gleyze, Nadja Roquin, Laurent Lamaignère

Proceedings Volume PC12726, PC1272604 (2023) https://doi.org/10.1117/12.2685004

KEYWORDS: Ultraviolet radiation, Laser scattering, Laser frequency, Modulation frequency, Amplitude modulation, Modulation, Phase shift keying, Phase modulation, Optical components, Pulsed laser operation

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Proceedings Article | 24 November 2023 Presentation

Influence of linear-to-circular polarization conversion on laser-induced damage of fused silica at 351 nm

Sylvain Grosjean, Charles Bouyer, Martin Cormier, Jean-François Gleyze, Nadja Roquin, Jean-Yves Natoli, Laurent Lamaignère

Proceedings Volume PC12726, PC127260S (2023) https://doi.org/10.1117/12.2685228

KEYWORDS: Polarization, Silica, Laser induced damage, Polarization density, Beam propagation method, Ultraviolet radiation, Pulsed laser operation, Kerr effect

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Proceedings Article | 3 December 2022 Poster + Presentation

MELBA: a testbed to study the impact of pulse characteristics on laser-induced damage in UV range and nanosecond regime

Charles Bouyer, Martin Cormier, Jean-François Gleyze, Sylvain Grosjean, Nadja Roquin, Jean-Yves Natoli, Laurent Lamaignère

Proceedings Volume PC12300, PC123000Y (2022) https://doi.org/10.1117/12.2642665

KEYWORDS: Laser induced damage, Ultraviolet radiation, Modulation, Streak cameras, Spectroscopy, Picosecond phenomena, Photodiodes, Oscilloscopes, Optical components, Modulators

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Proceedings Article | 3 December 2022 Presentation

Influence of temporal modulations with non-linear propagation on laser-induced damage of fused silica

Charles Bouyer, Martin Cormier, Jean-François Gleyze, Sylvain Grosjean, Nadja Roquin, Laurent Lamaingère, Jean-Yves Natoli

Proceedings Volume PC12300, PC1230003 (2022) https://doi.org/10.1117/12.2642239

KEYWORDS: Modulation, Silica, Laser induced damage, Pulsed laser operation, Light emitting diodes, Laser scattering, Ultraviolet radiation, Scattering, Phase modulation, Kerr effect

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Proceedings Article | 9 June 2017 Presentation

Latest developments on fibered MOPA in mJ range with hollow-core fiber beam delivery and fiber beam shaping used as seeder for large scale laser facilities (Conference Presentation)

Jean-François Gleyze, Florent Scol, Arnaud Perrin, Pierre Gouriou, Constance Valentin, Géraud Bouwmans, Emmanuel Hugonnot

Proceedings Volume 10238, 102380J (2017) https://doi.org/10.1117/12.2264577

KEYWORDS: Laser applications, Amplitude modulation, Fiber lasers, Beam shaping, Fiber amplifiers, Beam delivery, Fusion energy, Optical amplifiers, Frequency modulation, Plasma physics

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The Laser Megajoule (LMJ) is a French large scale laser facility dedicated to inertial fusion and plasma physics research. LMJ front-ends are based on fiber laser technology at nanojoule range [1]. Scaling the energy of those fiber seeders to the millijoule range is a way to upgrade LMJ’s front ends architecture and could also be used as seeder for lasers for ELI project for example. However, required performances are so restrictive (optical-signal-to-noise ratio higher than 50 dB, temporally-shaped nanosecond pulses and spatial single-mode top-hat beam output) that such fiber systems are very tricky to build. High-energy fiber amplifiers In 2015, we have demonstrated, an all-fiber MOPA prototype able to produce a millijoule seeder, but unfortunately not 100% conform for all LMJ’s performances. A major difficulty was to manage the frequency modulation used to avoid stimulated Brillouin scattering, to amplitude modulation (FM-AM) conversion, this limits the energy at 170µJ. For upgrading the energy to the millijoule range, it’s necessary to use an amplifier with a larger core fiber. However, this fiber must still be flexible; polarization maintaining and exhibit a strictly single-mode behaviour. We are thus developing a new amplifier architecture based on an Yb-doped tapered fiber: its core diameter is from a narrow input to a wide output (MFD 8 to 26 µm). A S² measurement on a 2,5m long tapered fiber rolled-up on 22 cm diameter confirmed that this original geometry allows obtaining strictly single-mode behaviour. In a 1 kHz repetition rate regime, we already obtain 750 µJ pulses, and we are on the way to mJ, respecting LMJ performances. Beam delivery In LMJ architecture the distance between the nanojoule fiber seeder and the amplifier stages is about 16 m. Beam delivery is achieved with a standard PM fiber, such a solution is no longer achievable with hundreds of kilowatt peak powers. An efficient way to minimize nonlinear effects is to use hollow-core (HC) fibers. The comparison between the different fibers will be presented in the conference. Fiber spatial beam shaping Spatial beam shaping (top-hat profile) is mandatory to optimize the energy extraction in free-space amplifier. It would be very interesting to obtain a flat-top beam in an all-fiber way. Accordingly, we have design and realize a large mode area single-mode top-hat fiber able to deliver a coherent top-hat beam. This fiber, with larger MFD adapted to mJ pulse, will be implemented to perform the spatial beam shaping from coherent Gaussian profile to coherent top-hat intensity profile in the mJ range. In conclusion, we will present an all-fiber MOPA built to fulfil stringent requirements for large scale laser facility seeding. We have already achieved 750 µJ with 10 ns square pulses. Transport of high peak power pulses over 17 m in a hollow-core fiber has been achieved and points out FM to AM conversion management issues. Moreover, spatial beam shaping is obtained by using specifically designed single-mode fibers. Various optimizations are currently under progress and will be presented.

Proceedings Article | 9 May 2017 Presentation

mJ range all-fiber MOPA prototype with hollow-core fiber beam delivery designed for large scale laser facilities seeding (Conference Presentation)

Florent Scol, Pierre Gouriou, Arnaud Perrin, Jean-François Gleyze, Constance Valentin, Géraud Bouwmans, Emmanuel Hugonnot

Proceedings Volume 10083, 1008304 (2017) https://doi.org/10.1117/12.2250321

KEYWORDS: Laser applications, Amplifiers, Gaussian beams, Beam shaping, Prototyping, Fiber lasers, Frequency modulation, Amplitude modulation, Fusion energy, Beam delivery

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Proceedings Article | 12 May 2015 Paper

Industrial mJ-class all-fiber front end with spatially coherent top-hat beam output used as seeder for high power laser

Jean-François Gleyze, A. Perrin, Pierre Calvet, Pierre Gouriou, Florent Scol, Constance Valentin, Géraud Bouwmans, E. Lecren, Emmanuel Hugonnot

Proceedings Volume 9513, 95130C (2015) https://doi.org/10.1117/12.2178484

KEYWORDS: Optical amplifiers, Fiber amplifiers, Fiber lasers, High power lasers, Beam shaping, Fusion energy, High power fiber amplifiers, Laser applications, Polarization, Bragg cells

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Proceedings Article | 8 March 2014 Paper

Ultrahigh wavelength range (300nm-2µm) polarization-independent 500gs/s single-shot pulse all-optical real time oscilloscope (ORTO)

Jean-François Gleyze, Steve Hocquet, Dominique Monnier Bourdin, Patrice Le Boudec, Romain Arnaud, Bruno Chassagne, Alain Jolly, Denis Penninckx

Proceedings Volume 8992, 89920Q (2014) https://doi.org/10.1117/12.2037571

KEYWORDS: Oscilloscopes, Signal detection, Modulators, Optical filters, Control systems, Prototyping, Photodiodes, Plasma physics, Heart, Modulation

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Proceedings Article | 25 February 2014 Paper

Recent advances for temporal and spectral diagnostics of the LMJ front-end laser facility

Jean-François Gleyze, Vanessa Moreau, Jérôme Dubertrand, Jacques Luce

Proceedings Volume 8962, 89620K (2014) https://doi.org/10.1117/12.2039143

KEYWORDS: Diagnostics, Modulators, Signal detection, Pulsed laser operation, Diffraction gratings, Modulation, Spectroscopy, Laser development, Spectral resolution, Spectroscopes

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Proceedings Article | 19 February 2011 Paper

Recent advances in the front-end sources of the LMJ fusion laser

Jean-François Gleyze, Jonathan Hares, Sebastien Vidal, Nicolas Beck, Jerome Dubertrand, Arnaud Perrin

Proceedings Volume 7916, 79160I (2011) https://doi.org/10.1117/12.875383

KEYWORDS: Optical amplifiers, Modulation, Amplitude modulation, Fiber amplifiers, Phase modulation, Pulsed laser operation, Polarization, Modulators, Picosecond phenomena, Oscilloscopes

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Proceedings Article | 3 September 2008 Paper

A two-pass Sagnac loop for high-contrast ultrafast switching at 1053nm

A. Jolly, L. Lago, S. Jonathas, J. Luce, H. Coic, J. Gleyze, P. Le Boudec, N. Traynor

Proceedings Volume 7072, 707207 (2008) https://doi.org/10.1117/12.801141

KEYWORDS: Switching, Switches, Polarization, Temporal resolution, Phase modulation, Picosecond phenomena, Dispersion, Output couplers, Reflectors

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Proceedings Article | 17 June 2003 Paper

Analytic modeling of three level fibered amplifiers

Herve Coic, Frederic Leconte, Jean Francois Gleyze, Alain Jolly

Proceedings Volume 4990, (2003) https://doi.org/10.1117/12.474761

KEYWORDS: Absorption, Luminescence, Amplifiers, Fiber amplifiers, Ytterbium, Differential equations, Picosecond phenomena, Performance modeling, Optical fibers, Cladding

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SPIE Journal Paper | 1 May 2003

Front-end sources of the LIL-LMJ fusion lasers: progress report and prospects

Alain Jolly, Jean Francois Gleyze, Jacques Luce, Herve Coic, Gssrard Deschaseaux

OE, Vol. 42, Issue 05, (May 2003) https://doi.org/10.1117/12.10.1117/1.1563231

KEYWORDS: Fiber amplifiers, Optical amplifiers, Modulators, Modulation, Phase modulation, Oscillators, Structured optical fibers, Phase shift keying, Optical engineering, Signal to noise ratio

Showing 5 of 14 publications

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