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Proceedings Paper

High-energy Yb-doped fiber MOPA in the ns-kHz regime for large-scale laser facilities front-end
Author(s): Laure Lago; Arnaud Mussot; Marc Douay; Emmanuel Hugonnot
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Paper Abstract

We report on dual-stage fibered Master Oscillator Power Amplifier system designed to meet stringent requirements of large-scale laser facilities front-end sources. The combination of high power continuous wave laser and electro-optical modulator allows the generation of multi-kHz nanosecond pulses with accurate tailored temporal pulse profiles. The seed pulses are amplified in a preamplifier to achieve 20 μJ pulse energy (33 dB gain) launched inside the power amplifier. We finally obtained a strictly single mode beam, narrow-bandwidth, multi-kHz nanosecond pulse amplification at mJ level, with more than 50 dB optical signal-to-noise ratio, 15 dB polarization extinction ratio and sub-nanosecond resolution temporal shaping. The choice of optimal parameters and the temporal pulse shaping have been performed thanks to numerical simulations (including forward and backward amplified spontaneous emission) in excellent agreement with the results.

Paper Details

Date Published: 10 February 2011
PDF: 6 pages
Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791410 (10 February 2011); doi: 10.1117/12.873914
Show Author Affiliations
Laure Lago, CEA (France)
Univ. des Sciences et Technologies de Lille, Lab. PhLAM, CNRS (France)
Arnaud Mussot, Univ. des Sciences et Technologies de Lille, Lab. PhLAM, CNRS (France)
Marc Douay, Univ. des Sciences et Technologies de Lille, Lab. PhLAM, CNRS (France)
Emmanuel Hugonnot, CEA (France)

Published in SPIE Proceedings Vol. 7914:
Fiber Lasers VIII: Technology, Systems, and Applications
Jay W. Dawson, Editor(s)

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