中国激光, 2019, 46 (10): 1001007, 网络出版: 2019-10-25   

氙灯抽运液冷叠片式重复频率钕玻璃放大器研制 下载: 1034次

Nd∶Glass Amplifier with Repetition Rate Fabricated by Flash-Lamp Pumping and Liquid Cooling Method
作者单位
1 中国科学院上海光学精密机械研究所高功率激光物理联合实验室, 上海 201800
2 中国工程物理研究院上海激光等离子体研究所, 上海 201800
摘要
重复频率激光放大器是实现重复频率激光器的关键器件,其重复频率取决于对抽运及放大过程中产生热量的有效控制。针对千焦耳量级输出重复频率激光器的需求,通过合理的结构设计、冷却液选型及测试等,研制出一台基于氙灯抽运、钕玻璃增益介质、液体冷却、通光直径为Φ130 mm的激光放大器样机。测试结果表明,该放大器样机可实现每分钟一次的重复频率运行,同时具备双程1.3189倍净增益,双程动态波前PV(peak to valley)平均值为0.2718波长(λ)(20 ℃,λ=1053 nm,10发次计)和0.3223λ(30 ℃,λ=1053 nm,10发次计)。
Abstract
A repetition rate laser amplifier is the key component of a repetition rate laser; here, the repetition rate of the amplifier is determined by precisely controlling the heat produced during pumping and amplifying. To achieve a repetition rate laser exhibiting kilojoule output energy, a repetition rate laser amplifier prototype with a diameter of 130 mm is developed based on flash-lamp pumping, a neodymium glass gain medium, and liquid cooling. After ensuring the rational mechanical design and selecting a coolant with suitable properties, the developed amplifier prototype operates at 1 shot per minute and exhibits a double pass small signal gain of 1.3189. At 1053 nm, the PV (peak to valley) of 10-shot average double pass wavefronts for the amplifier prototype are 0.2718λ and 0.3223λ when the temperatures of coolant are 20 ℃ and 30 ℃, respectively.

王冰艳, 李养帅, 张攀政, 王利, 刘强, 朱海东, 郭爱林, 张艳丽, 张旭, 周琼, 周申蕾, 朱俭, 马伟新, 朱宝强, 朱健强. 氙灯抽运液冷叠片式重复频率钕玻璃放大器研制[J]. 中国激光, 2019, 46(10): 1001007. Bingyan Wang, Yangshuai Li, Panzheng Zhang, Li Wang, Qiang Liu, Haidong Zhu, Ailin Guo, Yanli Zhang, Xu Zhang, Qiong Zhou, Shenlei Zhou, Jian Zhu, Weixin Ma, Baoqiang Zhu, Jianqiang Zhu. Nd∶Glass Amplifier with Repetition Rate Fabricated by Flash-Lamp Pumping and Liquid Cooling Method[J]. Chinese Journal of Lasers, 2019, 46(10): 1001007.

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