Open AccessPre-chirping management of a self-similar Yb-fiber amplifier towards 80 W average power with sub-40 fs pulse generation
Author(s) -
Jian Zhao,
Wenxue Li,
Chao Wang,
Yang Liu,
Heping Zeng
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.032214
Subject(s) - optics , materials science , amplifier , chirp , photonic crystal fiber , fiber laser , pulse duration , self phase modulation , raman scattering , laser , optoelectronics , optical fiber , raman spectroscopy , physics , nonlinear optics , cmos
We report on the generation of 80-W average power 38-fs laser pulse from a 2-m polarization-maintaining large-mode-area photonic crystal fiber amplifier with high pump absorption coefficient. The pre-chirping management was demonstrated to play a key role on the self-similar amplification. The achieved spectral bandwidth and compressed pulse duration were determined by the interplay between self-phase modulation and finite gain bandwidth. The power scaling in the self-similar fiber amplifier system was eventually limited by the onset of stimulated Raman scattering.