22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction  

作　　者：汪丹 何平 周唐建 李密 邬映臣 王亚楠 尚建力 高清松 张凯 唐淳 朱日宏 Dan Wang;Ping He;Tangjian Zhou;Mi Li;Yingchen Wu;Yanan Wang;Jianli Shang;Qingsong Gao;Kai Zhang;Chun Tang;Rihong Zhu(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang 430079,China;Graduate School of China Academy of Engineering Physics,Beijing 100193,China)

机构地区：[1]School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [2]Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang 430079,China [3]Graduate School of China Academy of Engineering Physics,Beijing 100193,China

出　　处：《Chinese Optics Letters》2024年第3期65-70,共6页中国光学快报（英文版）

基　　金：supported by the Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics(No.U1830132);the National Natural Science Foundation of China(No.62105313)。

摘　　要：A high-power CW Yb:YAG slab laser amplifier with no adaptive optics correction has been experimentally established.At room temperature,the amplifier emits a power of 22 kW with an average beam quality(β)of less than 3 in 0.5 min.To our knowledge,this is the brightest slab laser without closed-loop adaptive optics demonstrated to date.In addition,an extracted power of 17 kW with an optical extraction efficiency of 33%,corresponding to a residual optical path difference of less than 0.5μm,is achieved with the single Yb:YAG slab gain module.The slab gain module has the potential to be scalable to higher powers while maintaining good beam quality.This makes a high-power solid-state laser system simpler and more robust.

关 键 词：laser amplifier YB:YAG slab laser surface quality pumping uniformity 

分 类 号：TN248[电子电信—物理电子学] TN722