[Source MOPA à fibre générant des impulsions brèves de faible largeur spectrale avec une énergie de l'ordre du millijoule et une forte puissance crête à 1,55 μm]
Dans la première partie de cet article, les difficultés associés à l'utilisation d'amplificateurs optiques à fibre dopée Er:Yb ainsi que les paramètres de conception pour augmenter la puissance et l'énergie des pulses en utilisant des amplificateurs optiques à fibres à cœur larges, pompées par la gaine, en configuration master-oscillator power-amplifier (MOPA) sont revus. Cette approche est illustrée par des résultats obtenus précédemment par notre groupe. Dans la deuxième partie de l'article les résultats les plus récents sont donnés avec une nette amélioration en ce qui concerne la largeur spectrale de la puissance crête des impulsions obtenues. Les limitations et les différentes techniques pour améliorer ces résultats sont aussi décrites.
In the first part of this article we review the challenges associated with erbium–ytterbium doped fibre amplifiers and the design considerations to scale-up the output power and energy using cladding-pumped large-core fibre amplifiers in master-oscillator power-amplifier (MOPA) configuration. Previous results are also given to illustrate this rather successful approach. The second part consists of our latest experimental results with improvements in terms of linewidth and peak power using shorter pulses. Sub-hundred nanosecond pulses with millijoule energy and narrow linewidth were obtained using cascaded fibre amplifiers with large-core fibres. The energy level obtained with such short pulse duration and narrow spectral linewidth is the highest ever reported. System limitations and potential routes for further improvement are also discussed.
Mot clés : MOPA, Fibre dopée, Erbium, Ytterbium, Laser impulsionnel, Haute énergie
Christophe Codemard 1 ; Carl Farrell 1 ; Pascal Dupriez 1 ; Valery Philippov 1 ; Jayanta K. Sahu 1 ; Johan Nilsson 1
@article{CRPHYS_2006__7_2_170_0,
author = {Christophe Codemard and Carl Farrell and Pascal Dupriez and Valery Philippov and Jayanta K. Sahu and Johan Nilsson},
title = {Millijoule, high-peak power, narrow-linewidth, sub-hundred nanosecond pulsed fibre {Master-Oscillator} {Power-Amplifier} at 1.55 \ensuremath{\mu}m},
journal = {Comptes Rendus. Physique},
pages = {170--176},
publisher = {Elsevier},
volume = {7},
number = {2},
year = {2006},
doi = {10.1016/j.crhy.2006.01.015},
language = {en},
}
TY - JOUR AU - Christophe Codemard AU - Carl Farrell AU - Pascal Dupriez AU - Valery Philippov AU - Jayanta K. Sahu AU - Johan Nilsson TI - Millijoule, high-peak power, narrow-linewidth, sub-hundred nanosecond pulsed fibre Master-Oscillator Power-Amplifier at 1.55 μm JO - Comptes Rendus. Physique PY - 2006 SP - 170 EP - 176 VL - 7 IS - 2 PB - Elsevier DO - 10.1016/j.crhy.2006.01.015 LA - en ID - CRPHYS_2006__7_2_170_0 ER -
%0 Journal Article %A Christophe Codemard %A Carl Farrell %A Pascal Dupriez %A Valery Philippov %A Jayanta K. Sahu %A Johan Nilsson %T Millijoule, high-peak power, narrow-linewidth, sub-hundred nanosecond pulsed fibre Master-Oscillator Power-Amplifier at 1.55 μm %J Comptes Rendus. Physique %D 2006 %P 170-176 %V 7 %N 2 %I Elsevier %R 10.1016/j.crhy.2006.01.015 %G en %F CRPHYS_2006__7_2_170_0
Christophe Codemard; Carl Farrell; Pascal Dupriez; Valery Philippov; Jayanta K. Sahu; Johan Nilsson. Millijoule, high-peak power, narrow-linewidth, sub-hundred nanosecond pulsed fibre Master-Oscillator Power-Amplifier at 1.55 μm. Comptes Rendus. Physique, Volume 7 (2006) no. 2, pp. 170-176. doi : 10.1016/j.crhy.2006.01.015. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.01.015/
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