用于锁模Nd:YAG激光器的单脉冲开关  

Single pulse switch used in mode-locked Nd:YAG laser

作　　者：张小秋[1] 王国志[1] 赵宝升[1] 任友来[1] 高宏文[1] 桂建保[1] 陈智[1] 李军[2] 程晋闽[2] 

机构地区：[1]中国科学院西安光学精密机械研究所,陕西西安710068 [2]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2004年第11期1403-1405,共3页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：　锁模Nd:YAG激光器选取单脉冲时,通常采用KD P普克尔盒。波长1.06μm的激光半波电压为6.6kV。应用冷阴极闸流管KN 22作为开关线路比较广泛,但近年来我们改用MOS场效应管线路代替KN 22,该线路性能稳定可靠,输出脉冲幅度为-6.6～-8kV,脉冲宽度5～10ns可调,触发晃动小于0.5ns,触发延时30～40ns,单脉冲选出率为100%。经长时间使用未发现异常,此线路也可在削波器及脉冲剪切等技术中应用。When adopting mode-locked Nd:YAG laser to choose single pulse, KD~ *P Pockels cell is usually used. The half wavelength voltage is 6.6 kV to the laser of 1.06μm wavelength. In recent years, cold cathode thyratron KN-22 is widely used in circuit, but here KN-22 is replaced by MOSFET. The circuit with MOSFET has stable and credible performance, it can output a pulse of -6.6～-8kV and the pulse width can be adjusted from 5ns to 10ns. The circuit has a short time jitter (0.5ns), a delay of 30ns and high probability of selecting single pulse (100%). No abnormity is found after using a long time and the circuit can be also used as chopper and pulse shearer.

关 键 词：锁模激光器 单脉冲开关 MOS场效应管 

分 类 号：O436.4[机械工程—光学工程]