Active Q-switch Nd:YAG Lasers End-pumped by QCW-LD

Using micro cylindrical lenses and lens duct as coupling system,QCW 600 W laser diode array(LDA) as pumping source and KD P crystal as Q switch,we have realized active Q switch laser output.With about 93 mJ pump energy,an energy of 10 mJ,pulse width of 10 ns pulse is obtained,optical optical efficiency is about 11 %.The relations between pulse width and pulse energy with pump are given in this paper.