摘要
基于简单的主振荡功率放大结构,演示了一种高功率窄线宽线性偏振全光纤激光器,其最大输出功率为3.08 kW,3 dB线宽为0.2 nm。在整个功率缩放过程中,偏振消光比约为94%,光束质量M 2约为1.4。这是国内外首次实现3 kW全保偏光纤激光输出,与基于相位调制的窄线宽激光器相比,该激光器可实现近似的线宽,同时具有受激布里渊散射阈值高、系统结构简单、成本低等特点。
We demonstrated a narrow linewidth linearly polarized all-fiber laser operating at maximum output power of 3.08 kW with a 3 dB linewidth of 0.2 nm based on a simple master oscillator power amplifier(MOPA)structure.The polarization extinction ratio(PER)is about 94%and the M 2 is about 1.4 along the whole power scaling process.This is the first demonstration of a 3 kW linearly polarized all-fiber laser output.Compared with the narrow linewidth fiber amplifier based on phase modulation,this system can achieve a nearly same linewidth.Meanwhile,it has the characteristics of high stimulated Brillouin scattering(SBS)threshold,simple structure,and low cost,etc.
作者
王岩山
王珏
常哲
彭万敬
孙殷宏
马毅
高清松
张凯
唐淳
Wang Yanshan;Wang Jue;Chang Zhe;Peng Wanjing;Sun Yinhong;Ma Yi;Gao Qingsong;Zhang Kai;Tang Chun(Institute of Applied Electronics,CAEP,Mianyang 621900,China;The Key Laboratory of Science and Technology on High Energy Laser,CAEP,Mianyang 621900,China;Graduate School of CAEP,Beijing 100088,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2020年第1期23-25,共3页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(61605191)
中国工程物理研究院院长基金项目(YZJJLX2016011)
关键词
全光纤激光器
主振荡功率放大
窄线宽
线偏振
all-fiber laser
master oscillator power amplifier
narrow linewidth
linear polarization