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Proceedings Article

High-energy Yb-doped fiber MOPA in the ns-kHz regime for large-scale laser facilities front-end

[+] Author Affiliations
Laure Lago

CEA (France) and Univ. des Sciences et Technologies de Lille, Lab. PhLAM, CNRS (France)

Arnaud Mussot, Marc Douay

Univ. des Sciences et Technologies de Lille, Lab. PhLAM, CNRS (France)

Emmanuel Hugonnot

CEA (France)

Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791410 (February 10, 2011); doi:10.1117/12.873914
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From Conference Volume 7914

  • Fiber Lasers VIII: Technology, Systems, and Applications
  • Jay W. Dawson
  • San Francisco, California, USA | January 22, 2011

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.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Laure Lago ; Arnaud Mussot ; Marc Douay and Emmanuel Hugonnot
"High-energy Yb-doped fiber MOPA in the ns-kHz regime for large-scale laser facilities front-end", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791410 (February 10, 2011); doi:10.1117/12.873914; http://dx.doi.org/10.1117/12.873914


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