7.13 kW、2倍衍射极限输出的Yb板条激光放大器  

Yb Slab Laser Amplifier with a Laser Output of 7.13 kW, 2 Times Diffraction Limit

作　　者：王亚楠 周唐建[1,2] 尚建力[1,2] 李密[1,2] 王君涛[1,2] 邬映臣[1,2,3] 石勇 何平[1,2] 高清松 汪丹[1,2,3] Wang Yanan;Zhou Tangjian;Shang Jianli;Li Mi;Wang Juntao;Wu Yingcheng;Shi Yong;He Ping;Gao Qingsong;Wang Dan(Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang,Sichuan 621999,China;Key Laboratory of Science and Technology on High Energy Laser,China Academy of Engineering Physics,Mianyang,Sichuan 621999,China;Graduate School of China Academy of Engineering Physics,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621999 [2]中国工程物理研究院高能激光科学与技术重点实验室,四川绵阳621999 [3]中国工程物理研究院研究生院,北京100088

出　　处：《激光与光电子学进展》2021年第11期290-295,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金青年基金(61705209)。

摘　　要：计算了Yb∶YAG板条选通角并优化设计了放大链路构型。对比分析了反射式像传递系统优势并计算了像传递系统的球差,结果表明,反射式像传递系统可大幅减小系统球差,有利于提升放大激光光束质量。室温下搭建了基于单个Yb板条的三通主振荡器功率放大系统,通过采用反射式像传递放大链路设计,同时优化泵浦激光与种子激光的近场强度匹配,实现在无主动光学校正系统下,功率7.13 kW、光束质量优于2倍衍射极限的激光输出。The injection angles of Yb∶YAG slab are calculated and the configuration of laser amplification is optimized. The advantages of the reflective image transfer system are compared and analyzed,and the spherical aberration of the image transfer system is calculated. The results show that the spherical aberration is significantly decreased by the reflective image transfer system,which improves the beam quality of the amplified laser. Based on single Yb∶YAG slab,a three-passes master oscillator power amplifier system is developed at room temperature. By using the reflective image transfer system and matching the near-filed intensity between pump laser and seed laser,an output power of 7. 13 k W and a beam quality of 2 times diffraction limit are achieved without the active optical correction system.

关 键 词：激光器 YB:YAG 板条激光放大器 光束质量 像传递系统 

分 类 号：TN248.1[电子电信—物理电子学]