摘要
利用MOPA激光种子源,结合氙灯泵浦行波放大方法研制了高能量脉宽可调1 064 nm波段激光器。激光器采用电调制脉宽方式控制MOPA光纤激光器脉冲信号的输出,在保证高光束质量的前提下,实现了脉宽8.6～220.9 ns可调的1 064 nm种子激光输出。选用双通放大级设计,利用氙灯泵浦Nd:YAG晶体实现五级行波放大,分析讨论了抑制自激振荡方法和行波放大过程中脉宽变窄的原因。当氙灯注入能量为60 J,重复频率10 Hz时,实现了脉宽调范围为4.2～173.3 ns的稳定1 064 nm激光输出,单脉冲能量最高可达158 m J。
The high energy pulse width tuning 1 064 nm solid-state laser was developed by adopting MOPA laser source and combining the traveling wave amplification of xenon-lamp pumping.The pulse signal out of MOPA fiber laser was controlled by the method of electric modulation pulse width.Under the premise of ensuring high beam quality,a 1 064 nm laser source output with pulse width of 8.6-220.9 ns was achieved.Adopting double pass amplifier design,five-step travelling wave amplification was achieved by xenon lamp pumping Nd:YAG crystal.The technique of restraining self-oscillations and the reasons of narrowing pulse width in the process of traveling wave amplification were analyzed.When the inject energy of xenon-lamp was 60 J and the repetition rate was 10 Hz,a 1 064 nm laser output with pulse width of 4.2-173.3 ns was achieved.Single pulse energy was up to 158 m J.
作者
崔建丰
邬小娇
李福玖
卢春良
岱钦
李业秋
张鹏
张善春
Cui Jianfeng;Wu Xiaojiao;Li Fujiu;Lu Chunliang;Dai Qin;Li Yeqiu;Zhang Peng;Zhang Shanchun(School of Science,Shenyang Ligong University,Shenyang 110159,China;Anshan ZY Laser Technology Co.,Ltd,Anshan 114000,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2019年第4期82-86,共5页
Infrared and Laser Engineering
基金
国家自然科学基金(61705145)
辽宁省科技计划项目(2014220040)
辽宁省高等学校创新人才支持计划(LR2016079)
沈阳市科技计划项目(17-33-6-00)
沈阳理工大学激光与光信息技术辽宁省重点实验室开放基金(1010131008603)
