High Power Laser Science and Engineering, 2014, 2 (1): 010000e3, Published Online: Dec. 26, 2014
Kilowatt high average power narrow-linewidth nanosecond all-fiber laser 
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Abstract
A high power narrow-linewidth nanosecond all-fiber laser based on the master oscillator power amplifier (MOPA) configuration is demonstrated. A pulsed seed with high repetition rate of 10 MHz was generated by modulating a continuous-wave (CW) single-frequency fiber laser at 1064 nm by using an electro-optic intensity modulator (EOIM). After multi-stage cascaded power amplification, the average power was boosted to be kilowatt level. The pulses from the main amplifier had a pulse width of 3 ns and an average/peak power of 913 W/28.6 kW. Further power scaling of the pulses was limited by stimulated Raman scattering (SRS) for the moment, method for SRS suppression and further power scaling was briefly discussed.
Rongtao Su, Pu Zhou, Xiaolin Wang, Rumao Tao, Xiaojun Xu, College of Optoelectronic Science and Engineering, National University of Defense Technology , Changsha 410073, China. Kilowatt high average power narrow-linewidth nanosecond all-fiber laser[J]. High Power Laser Science and Engineering, 2014, 2(1): 010000e3.
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