一种高功率窄线宽偏振光纤激光器研究  

Research on high-power narrow linewidth polarized fiber laser

作　　者：张雪霞 张长昆 张利明[1,2] 熊文豪 李尧 高平 赵鸿 解子俨[1,2] 邓宇 ZHANG Xue-xia;ZHANG Kun;ZHANG Li-ming;XIONG Wen-hao;LI Yao;GAO Ping;ZHAO Hong;XIE Zi-yan;DENG Yu(The 11th Research Institute of CETC,Beijing 100015,China;Science and Technology on Solid-State Laser Laboratory,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第十一研究所,北京100015 [2]固体激光技术重点实验室,北京100015

出　　处：《激光与红外》2025年第4期501-504,共4页Laser & Infrared

基　　金：高功率线偏振窄线宽光纤激光器横向模式不稳定性研究项目(No.H202201030941)资助。

摘　　要：高功率窄线宽光纤激光器因其低噪声、可靠性好、电光转换效率高、相干性好和高光束质量等优异的性能,在精密测量、激光雷达、光谱分析及非线性光学应用等领域展现出巨大的潜力。本文选用种子、多级预放和主放的方式对窄线宽偏振光纤激光器进行了研究。实验中,1056nm波段的窄线宽种子光经过多级预放后,功率输出20W,然后注入到双向泵浦的主放大系统中。激光器的包层光剥离器直接在光纤熔点处制作,这样既可以减少光路熔点,又可以简化激光器结构。通过优化主放大系统前后泵浦光比例,当泵浦电流为11.2A时,激光器的输出功率为2.505kW,激光器的光-光转化效率为83%。后期继续增加泵浦功率,可以获得更高功率输出。High-power narow linewidth fiber lasers exhibit significant potential in precision measurement,LiDAR,spectral analysis,and nonlinear optical applications,thanks to their exceptional reliability,high electro-optical conver-sion efficiency,good coherence,and high beam quality.In this paper,the narrow linewidth polarized laser is investiga-ted by using seed,multi-stage pre-amplification and main amplification.In the experiment,the narrow linewidth seed light in the 1056 nm wavelength band is amplified in multi-stages with a power output of 20 W,and then injected into the main amplification system with bidirectional pumping.The cladding pump stripping of the laser is directly fabrica-ted on the melting point of the fiber,which can reduce the melting point and simplify the laser structure.By optimizing the ratio of pump power before and after the main amplification system,the output power of laser is 2.505 kW when the pump current is 11.2 A,and the optical-to-optical conversion efficiency of the fiber laser is 83%.And higher power output can be obtained by continuing to increase the pumping power at a later stage.

关 键 词：激光器 光纤激光器 窄线宽 高功率 

分 类 号：TN248[电子电信—物理电子学] O437[机械工程—光学工程]