高峰值功率高光束质量光纤-固体混合放大激光系统  

High Peak Power and High Beam Quality Fiber-Solid Hybrid Amplification Laser System

作　　者：汪勇 刘斌[1] 叶志斌 徐霜馥 唐超 张翔 郑峰 刘崇[1] 刘东[1] 项震[1] Wang Yong;Liu Bin;Ye Zhibin;Xu Shuangfu;Tang Chao;Zhang Xiang;Zheng Feng;Liu Chong;Liu Dong;Xiang Zhen(The State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, Zhejiang 310027, China;Jiangsu Shuguang Optoelectronics Co. , Ltd. , Yangzhou, Jiangsu 225009, China;College of Electrical and Information Engineering, Quzhou University, Quzhou, Zhejiang 324000, China)

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027 [2]衢州学院电气与信息工程学院,浙江衢州324000 [3]江苏曙光光电有限公司,江苏扬州225009

出　　处：《中国激光》2018年第4期63-69,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金(61575172); 浙江省自然科学基金(LZ15F050001); 中央高校基本科研业务费专项资金; 衢州市科技计划(2016Y012); 衢州学院师资队伍建设专项经费(BSYJ201705)

摘　　要：高峰值功率以及高光束质量的激光光源在激光加工等领域具有重要的应用价值。利用重复频率为50kHz、脉宽为3.9ps、平均功率为10.9mW的光纤种子光源,经过两级固体双通放大,最终得到平均功率为27.65W,峰值功率达到65 MW的激光输出。第一级放大器为端面抽运Nd…YVO_4放大级,第二级放大器为侧面抽运Nd…YAG放大级。通过利用球差补偿理论设计的双通放大结构以及调节放大级中的填充因子,控制最终激光输出的光束质量,得到输出激光的光束质量因子M^2=1.30。High peak power and high beam quality laser is vitally valuable for applications in laser machining and other fields.A fiber laser with repetition frequency of 50 kHz,pulse width of 3.9 ps,and average power of 10.9 mW is used as the seed source.The average output power of 27.65 Wis obtained in double-passing amplifier of two stages,with the pulse peak power of 65 MW.The first amplifier stage is end-pumped Nd…YVO_4 solid amplifier,and the second is side-pumped NdYAG solid amplifier.The beam quality is preserved by a doublepassing configuration for spherical-aberration compensation.By optimizing the beam filling factor in each solid amplifier,the M2 factor of the output beam reaches 1.30 finally.

关 键 词：激光器 球差补偿 端面抽运 侧面抽运 光纤-固体混合放大激光器 

分 类 号：TN248.1[电子电信—物理电子学]