高功率窄线宽线偏振掺镱光纤激光器及其主要应用研究进展(特邀)  

Research Progress on High-Power Narrow-Linewidth Linearly Polarized Yb-Doped Fiber Lasers and Their Main Applications(Invited)

作　　者：王岩山[1,2] 杨小波 冯昱骏[1,2] 彭万敬 胡浩 李腾龙[1,2] 刘航 王尧[1,2] 林圣淘 魏江才[1,2] 王珏 孙殷宏 鲁燕华 马毅 唐淳 Wang Yanshan;Yang Xiaobo;Feng Yujun;Peng Wanjing;Hu Hao;Li Tenglong;Liu Hang;Wang Yao;Lin Shengtao;Wei Jiangcai;Wang Jue;Sun Yinhong;Lu Yanhua;Ma Yi;Tang Chun(Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang 621900,Sichuan,China;National Key Laboratory of Advanced Lasers and High Power Microwaves,Mianyang 621900,Sichuan,China;Graduate School of CAEP,Beijing 100088,China)

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900 [2]先进激光与高功率微波全国重点实验室,四川绵阳621900 [3]中国工程物理研究院研究生部,北京100088

出　　处：《中国激光》2024年第19期104-134,F0002,共32页Chinese Journal of Lasers

基　　金：国家重点研发计划(2022YFB3606403)。

摘　　要：回顾了近年来高功率窄线宽线偏振光纤激光器的重要研究进展,对各类线偏振光纤激光器的技术特点进行了简要分析,并展示了高功率窄线宽线偏振光纤激光在相干合成、非线性频率变换等主要应用领域中的代表性应用成果。Significance Compared with traditional random polarization fiber lasers,some special applications(such as coherent beam combining and nonlinear frequency conversion)require fiber lasers with high power,a narrow linewidth,linear polarization,and good beam quality output.To fulfill this requirement,high-power narrow-linewidth linearly polarized fiber lasers have recently attracted extensive attention,and their output power has increased from 1 kW to 5 kW in the last decade.The output power of narrow linewidth linearly polarized fiber lasers used for coherent beam combining and nonlinear frequency conversion has also significantly improved.This paper reviews the recent development of high-power narrow-linewidth linearly polarized fiber lasers.Representative application results for high-power narrow-linewidth linearly polarized fiber lasers in coherent beam combining and nonlinear frequency conversion are also presented.Progress High-power narrow-linewidth linearly polarized fiber lasers are generally based on a master oscillator power amplifier(MOPA)structure.Several types of laser seeds have been used in these MOPAs,including single-frequency,phase-modulated singlefrequency,and fiber-oscillator laser seeds.At present,a single-frequency linearly polarized laser has an output on approximately the kilowatt level,but the stimulated Brillouin scattering(SBS)effect seriously restricts further increases in output power.A linewidth on approximately the gigahertz scale can also meet the requirements for coherent beam combining and nonlinear frequency conversion.The SBS effect on the amplification process can be greatly suppressed by using the phase modulation technique to broaden the spectrum of a single-frequency laser,making it possible to achieve a higher output with a narrow-linewidth linearly polarized fiber laser.Currently,sine-wave,white noise signal(WNS),pseudo-random binary sequence(PRBS),and optimized signal phase modulation techniques are used in high-power narrow-linewidth linearly polarized fiber laser systems.

关 键 词：光纤激光 线偏振 窄线宽 相干合成 非线性频率变换 

分 类 号：TN248[电子电信—物理电子学]