[Intégration des lasers à fibre pour le LMJ]
Le dispositif d'injection optique pour l'équipement des grandes installations laser pour la fusion s'appuie sur une architecture arborescente à base de fibres monomodes. A partir d'un oscillateur monomode continu, unique et couplé à une structure à maintien de polarisation, un grand nombre d'impulsions sont générées sur autant de sorties synchrones après avoir été mises en forme. L'optimisation des performances optiques nécessite de maîtriser la dynamique en intensité dans une gamme de valeurs étendues sur plus de 50 dB. Les profils des impulsions, de forme arbitraire à l'intérieur d'une fenêtre de durée 25 ns, sont définis avec une résolution temporelle de 100 ps. La densité spectrale de puissance présente la forme d'une distribution de raies de Bessel contrôlées de manière très précise. Nous présentons les principaux éléments de dimensionnement et les composants développés dans la version actualisée du dispositif.
The Fibre-Injection System in the LIL–LMJ facilities makes use of a single-mode fiber based arborescent architecture. Starting from a unique single-mode oscillator, it consists of a high performance PM design which is dedicated to the generation of pulses onto a large number of synchronous outputs. The optical features to be optimised involve dynamic ranges in excess of 50 dB and the generation of 25 ns wide arbitrary waveforms at 100 ps time resolution, of which the PSD looks like a precisely controlled Bessel distribution. We analyse the complete design issues, together with the optical components which have been developed specifically.
Mots-clés : Amplificateurs fibrés, Maintien de polarisation, Modulation de phase, Mise en forme temporelle
Alain Jolly 1 ; Jean-François Gleyze 1 ; Denis Penninckx 1 ; Nicolas Beck 1 ; Laurent Videau 1 ; Hervé Coïc 1
@article{CRPHYS_2006__7_2_198_0,
author = {Alain Jolly and Jean-Fran\c{c}ois Gleyze and Denis Penninckx and Nicolas Beck and Laurent Videau and Herv\'e Co{\"\i}c},
title = {Fiber lasers integration for {\protect\emph{LMJ}}},
journal = {Comptes Rendus. Physique},
pages = {198--212},
publisher = {Elsevier},
volume = {7},
number = {2},
year = {2006},
doi = {10.1016/j.crhy.2006.01.017},
language = {en},
}
TY - JOUR AU - Alain Jolly AU - Jean-François Gleyze AU - Denis Penninckx AU - Nicolas Beck AU - Laurent Videau AU - Hervé Coïc TI - Fiber lasers integration for LMJ JO - Comptes Rendus. Physique PY - 2006 SP - 198 EP - 212 VL - 7 IS - 2 PB - Elsevier DO - 10.1016/j.crhy.2006.01.017 LA - en ID - CRPHYS_2006__7_2_198_0 ER -
Alain Jolly; Jean-François Gleyze; Denis Penninckx; Nicolas Beck; Laurent Videau; Hervé Coïc. Fiber lasers integration for LMJ. Comptes Rendus. Physique, High power fiber lasers and amplifiers, Volume 7 (2006) no. 2, pp. 198-212. doi : 10.1016/j.crhy.2006.01.017. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.01.017/
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