用快速电光偏转器对激光脉冲削波  

Pulse Chopping by Fast-response Electro-optic Defletors

作　　者：许发明[1] 陈绍和[1] 陈兰荣[1] 逯其荣 许世忠[1] 范滇元[1] 邓锡铭[1] 

机构地区：[1]中国科学院上海光机所

出　　处：《中国激光》1996年第9期811-814,共4页Chinese Journal of Lasers

基　　金："神光"升级课题

摘　　要：介绍了用快速电光偏转器实现激光脉冲剂波的原理．用该方法可以轻易获得很大范围以内所需任意宽度的激光脉冲．理论上讨论了激光焦斑、调制小孔大小、扫描速度和激光脉冲宽度的关系；并在实验上用φ０．３６的小孔从２０ｎｓ的调Ｑ激光脉冲削波，获得了前沿１４０ｐｓ．脉冲宽度为２８０ｐｓ的窄脉冲。This paper introduces the principles of pulse chopping with fast-response electrooptic deflectors. Laser pulses with a wide range of desirable pulse-width can be obtainedeasily using this method. Dependence of pulse-width upon light beam focus spot, size ofchopping hole and scan velocity is discussed theoretically.Chopped from a Q- switch singlelongitudinal mode pulse with 20 ns pulse-width by using a φ0. 36 chopping hole, a short lightPulse with a pulse-width 280 ps and rise-edge 140 ps is realized experimentally.

关 键 词：电光偏转器 激光脉冲削波 激光核聚变 

分 类 号：TL632.1[核科学技术—核技术及应用]