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15 February 2012 65 W of average power and 6-MW peak power generation from a mode-locked fiber oscillator
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Abstract
We report on the generation of femtosecond pulses from an all-normal-dispersion fiber laser featuring a large-mode-area ytterbium-doped photonic-crystal fiber. Nonlinear polarization evolution assisted by passive spectral filtering in combination with the large-pitch fiber design enables a significant peak power enhancement with the generation of multi-megawatt pulses. 65 W of average power at 76.5 MHz repetition rate, corresponding to 850 nJ pulses are generated in a compact oscillator setup. The output pulses are extra-cavity dechirped down to 111fs with 6 MW of peak power. To the best of our knowledge, these are the highest average and peak powers ever reached by a mode-locked fiber laser.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Baumgartl, C. Lecaplain, A. Hideur, J. Limpert, and A. Tünnermann "65 W of average power and 6-MW peak power generation from a mode-locked fiber oscillator", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370H (15 February 2012); https://doi.org/10.1117/12.908300
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