利用国产光纤实现平均功率761W、脉冲能量17.5mJ纳秒脉冲激光输出  

Nanosecond Pulse Laser Output with Average Power of 761 W and Pulse Energy of 17.5 mJ Based on Domestic Fiber

作　　者：王世杰 张志伦 曹驰 林贤峰 邢颍滨 廖雷 李进延 Wang Shijie;Zhang Zhilun;Cao Chi;Lin XianFeng;Xing Yingbin;Liao Lei;Li Jinyan(Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]华中科技大学武汉光电国家研究中心

出　　处：《中国激光》2019年第12期308-311,共4页Chinese Journal of Lasers

基　　金：国家重点研发计划(2017YFB1104400)

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M2^2=9.82,M2^2=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M2^2=8.67,M2^2=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。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 M2^2=9.82, M2^2=9.02. At the repetition rate of 30 kHz, the average power is 526 W, the single pulse energy is 17.5 mJ, the slope efficiency is 85%, and the beam quality is M2^2=8.67,M2^2=8.57. This fiber is the reported domestic fiber with the highest average power and single pulse energy obtained at high repetition rate.

关 键 词：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 

分 类 号：O436[机械工程—光学工程]