中文摘要：

报导了一种基于雪崩晶体管和阶跃恢复二极管的超快前沿、低触发晃动方波电脉冲产生技术.利用雪崩晶体管的电触发雪崩导通特性得到脉冲主体,再用阶跃恢复二极管的超快阶跃恢复特性对脉冲前沿整形,从而得到输出脉冲幅度23 V、输出阻抗50Ω、脉冲前沿小于160 ps的方波脉冲,脉冲触发晃动小于4.5 ps（rms）,脉冲宽度5 ns,幅度稳定性优于3%,顶部不平坦度优于5%.该脉冲发生器在＂神光Ⅲ＂高功率激光原型装置前端系统中获得成功应用.

英文摘要：

An ultra-fast square pulse generator has been developed by using step recovery diodes （SRDs）.This circuit mainly includes two parts：the pulse producing part based on an avalanche transistor and the pulse sharpening part based on step recovery diodes.The circuit can generate an electrical square pulse with the rise time of 160 ps,the pulse full-width at half maximum （FWHM） of 5 ns,the voltage amplitude of 23 V,and in 50Ω load.The trig jitter is less than 5 ps（RMS） and the flatness of top is better than 5%.This pulse generator has been applied in the so-called ＂Shenguang＂ high power laser system successfully.