标题：Laser-diode end-pumped passively Q-switched Nd : YVO4 laser with Cr4+: YAG saturable absorber
作者：Zheng, J; Zhao, SZ; Chen, L
作者机构：[Zheng, J; Zhao, SZ; Chen, L]Shandong Univ, Dept Opt, Jinan 250100, Peoples R China.
通讯作者地址：[Zheng, J]Shandong Univ, Dept Opt, Jinan 250100, Peoples R China.
关键词：Nd : YVO4 laser; laser diode end-pump; passive Q-switched; numerical; solutions
摘要：A fiber-coupled laser-diode end-pumped passively Q-switched Nd:YVO4 laser with a Cr4+:YAG saturable absorber is realized, providing pulse widths of 107 to 240 ns with pulse repetition rates ranging from 60 to 150 KHz. The dependences of pulsewidth, pulse energy, pulse repetition rate, and peak power on pump power are measured; meanwhile, the influences of different small-signal transmission T-0 of a saturable absorber on Q-switched performances is compared. The rate equations are used to simulate the Q-switched process of the laser. The modified Q-switched criterion including the influence of pump power of this type laser is presented. The experimental results agree with the numerical solutions of the rate equations. (C) 2002 Society of Photo-Optical Instrumentation Engineers.