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作 者:唐军[1] 丁磊[1] 邓青华[1] 罗亦鸣[1] 许党朋[1] 卢振华[1] 景峰[1]
机构地区:[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900
出 处:《强激光与粒子束》2009年第12期1851-1853,共3页High Power Laser and Particle Beams
基 金:国家高技术发展计划项目
摘 要:为了获得具有特殊要求的驱动激光,设计了一套以Nd:YVO4锁模激光器为种子光,用二极管激光器泵浦的Nd:YAG放大系统进行放大的激光系统。对放大过程中锁模激光脉冲串因增益饱和造成的脉冲串包络畸变以及对包络的整形控制进行了研究。实验获得能量为24 mJ的基频光,5.7 mJ的倍频光,0.608mJ的紫外四倍频光;通过脉冲串整形控制,实现了包络顶部平整的紫外超短脉冲串输出,满足了光阴极注入器对驱动激光的特殊需求。Using optic injectors driven by laser as the electron source is advantageous in the research of free electron laser. To get the driving laser meeting certain requirement, a laser system has been designed. In the laser system, a mode-locked Nd: YVO4 laser offers the seed pulse sequence and an laser diode array pumped Nd:YAG amplification system amplifies the seed se- quence. In the amplification process, the shape of the sequence envelope is aberrated due to gain saturation effect. 24 mJ fundemental wave(1064 nm), 5.7 mJ second harmonic and 0.6 mJ fourth harmonic have been obtained respectively in the system. The aberration and the way to compensate are also studied experimentally. As a result, the ultraviolet sequence with flat-topped envelope was obtained after fourth harmonic conversion of the amplified sequence.
分 类 号:TN248.1[电子电信—物理电子学]
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