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High average power picoseconds fiber amplifier with 20 μm core YDF

Authors :
Sun Wenhua
Ying Ying Yang
Weiguo Hou
Luyuan Zhang
Huansha Yu
Zheng Han
Xiao Lin
Z. Y. Dong
Junqin Li
Source :
Laser Physics Letters. 9:440-444
Publication Year :
2012
Publisher :
Astro, Ltd., 2012.

Abstract

In this letter we report a simple single-stage amplifier realized as high as 62 W average power output at 1064 nm wavelength, 40 picoseconds pulse width and 80 MHz repetition from 0.7 W seed laser based on backward pumped master-oscillator fiber power amplifier (MOPA) system. It is can stable operation in 57.6 W output for hours. We applied a semiconductor saturable absorber mirror (SESAM) passive mode-lock Nd:YVO4 oscillator as seed source and 6m long 20 μm core double-cladding Yb-doped fiber (YDF) as gain medium. To the best of our knowledge, 62 W average power is the highest output of single-stage ps-pulse amplifier with 20 μm-core fiber. None amplified spontaneous emission (ASE) and stimulated Raman scattering (SRS) nonlinear phenomenon was observed in 57.6 W high average power output.

Details

ISSN :
1612202X and 16122011
Volume :
9
Database :
OpenAIRE
Journal :
Laser Physics Letters
Accession number :
edsair.doi...........c27f4d9252f19291413f4eb9b0c1807b