中国激光, 2019, 46 (9): 0901008, 网络出版: 2019-09-10
低温液冷块状Yb∶YAG激光放大器 下载: 988次
Cryogenic Liquid-Cooled Yb∶YAG Bulk Amplifier
激光光学 激光放大器 低温液冷 侧面冷却块状放大器 二极管抽运激光器 laser optics laser amplifier cryogenic liquid-cooled Yb∶YAG Yb∶YAG side-cooled bulk amplifier diode pumped laser
摘要
针对高功率激光的应用需求,提出一种新构型的低温激光放大器方案,采用低温液体侧面冷却三角形沟槽设计的块状Yb∶YAG晶体,抑制了介质内寄生振荡,改善了热管理效果,实现了放大器高效储能与提取,获得了能量为9.4 J、脉冲宽度为10 ns、重复频率为5 Hz、远场3.3倍衍射极限的激光输出,为后续更大能量的Yb∶YAG激光放大器设计提供了有益的参考。
Abstract
An innovative laser amplifier architecture based on cryogenically cooled Yb∶YAG bulk is developed for high-power laser application. The Yb∶YAG bulk with triangular-section channels on the side is cooled using a cryogenic liquid to suppress parasitic oscillation in the medium and improve heat management. This architecture realizes high-efficiency energy storage and extraction of the amplifier, and a laser output with energy of 9.4 J, pulse width of 10 ns, repetition frequency of 5 Hz, diffraction limit far field of 3.3 is obtained, when high energy storage and extraction efficiency of the amplifier are realized. It provides a useful reference for the subsequent design of Yb∶YAG laser amplifier with large energy.
严雄伟, 蒋新颖, 王振国, 郑建刚, 李敏, 肖凯博. 低温液冷块状Yb∶YAG激光放大器[J]. 中国激光, 2019, 46(9): 0901008. Yan Xiongwei, Jiang Xingying, Wang Zhenguo, Zheng Jiangang, Li Min, Xiao Kaibo. Cryogenic Liquid-Cooled Yb∶YAG Bulk Amplifier[J]. Chinese Journal of Lasers, 2019, 46(9): 0901008.