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Φ130mm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=1053nm,10发次计)和0.3223λ(30℃,λ=1053nm,10发次计)。
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 130mm 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 1shot per minute and exhibits a double pass small signal gain of 1.3189.At 1053nm,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.
作者
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
Wang Bingyan;Li Yangshuai;Zhang Panzheng;Wang Li;Liu Qiang;Zhu Haidong;Guo Ailin;Zhang Yanli;Zhang Xu;Zhou Qiong;Zhou Shenlei;Zhu Jian;Ma Weixin;Zhu Baoqiang;Zhu Jianqiang(National Laboratory on High Power Lasers and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Institute of Laser Plasma,China Academy of Engineering and Physics,Shanghai 201800,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第10期67-73,共7页
Chinese Journal of Lasers
关键词
激光器
重复频率激光放大器
液体冷却
氙灯抽运
钕玻璃
lasers
laser amplifier with repetition rate
liquid cooling
flash-lamp pumping
neodymium glass
