中国激光, 2019, 46 (12): 1215002, 网络出版: 2019-12-02
利用国产光纤实现平均功率761 W、脉冲能量17.5 mJ纳秒脉冲激光输出 
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Nanosecond Pulse Laser Output with Average Power of 761 W and Pulse Energy of 17.5 mJ Based on Domestic Fiber
激光器 脉冲光纤激光器 掺镱光纤 单脉冲能量 主振荡功率放大 lasers pulse fiber laser Yb-doped fiber single pulse energy master oscillator power-amplifier
摘要
基于自主研发的100/400双包层掺镱有源石英光纤,搭建了高功率主振荡功率放大(MOPA)结构纳秒调Q光纤激光器,重复频率30~60 kHz可调谐。系统中心波长为1064.08 nm。采用976 nm激光泵浦,在60 kHz时实现平均功率761 W的输出,单脉冲能量为12.6 mJ,斜率效率为83.4%,光束质量 Mx2=9.82, My2=9.02;30 kHz下平均功率为526 W,单脉冲能量为17.5 mJ,斜率效率为85%,光束质量 Mx2=8.67, My2=8.57。该光纤是目前报道的高重复频率下获得的平均功率和单脉冲能量最高的国产光纤。
Abstract
Based on home-made 100/400 double clad Yb-doped active silica fiber, a high power nanosecond Q-switched fiber laser with master oscillator power-amplifier (MOPA) structure and tunable repetition rate of 30-60 kHz is built. The center wavelength of system is 1064.08 nm. Using the 976 nm laser pumping, the output of average power of 761 W is achieved at the repetition rate of 60 kHz with a single pulse energy of 12.6 mJ, a slope efficiency of 83.4%, and a beam quality of
王世杰, 张志伦, 曹驰, 林贤峰, 邢颍滨, 廖雷, 李进延. 利用国产光纤实现平均功率761 W、脉冲能量17.5 mJ纳秒脉冲激光输出[J]. 中国激光, 2019, 46(12): 1215002. Shijie Wang, Zhilun Zhang, Chi Cao, XianFeng Lin, Yingbin Xing, Lei Liao, Jinyan Li. Nanosecond Pulse Laser Output with Average Power of 761 W and Pulse Energy of 17.5 mJ Based on Domestic Fiber[J]. Chinese Journal of Lasers, 2019, 46(12): 1215002.
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