96.2 W All-Fiberized Nanosecond Single-Frequency Fiber
MOPA¹

R. T. Su, P. Zhou*, H. Xiao, X. L. Wang, and X. J. Xu

College of Optoelectronic Science and Engineering, National University of Defense Technology,
Changsha 410073, China

*e-mail: zhoupu203@163.com

Received July 1, 2011; in final form, July 22, 2011; published online October 24, 2011

Abstract—We report experimental results on a 96.2 W all-fiberized nanosecond single-frequency master-oscil-
lator power amplifier (MOPA) laser working at 1064 nm. An external modulation fiber laser with average power
of 0.5 mW and line width of 20 kHz is used as the seed source. Amplifying the seed laser in four stages, a single-
frequency laser with pulse duration of 10 ns and peak power of 816.7 W is obtained. The average output power
is up to 96.2 W. Further power-scaling of this MOPA structure can be realized since our experiment is only
pump-power limited.

10.1134/S1054660X11230186

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