Passive Q-switched Nd：YVO4/Cr4+：YAG lasers pumped by a fiber coupled laser diode

Liu Qiang; Gong Mali; Yan Ping; Jia Weipu; Cui Ruizhen; Wang Dongsheng

Liu Qiang, Gong Mali, Yan Ping, Jia Weipu, Cui Ruizhen, Wang Dongsheng. Passive Q-switched Nd：YVO4/Cr4+：YAG lasers pumped by a fiber coupled laser diode[J]. LASER TECHNOLOGY, 2002, 26(6): 401-402,406.

Citation:

Passive Q-switched Nd：YVO4/Cr4+：YAG lasers pumped by a fiber coupled laser diode

Graphical Abstract

Graphical Abstract

Abstract

Abstract

On the basis of Siegman's criterion for good passive Q-switched,it is difficult to operate a diode-pumped,passive Q-switched Nd:YVO4 laser with Cr4+:YAG as the saturable absorber.The main difficulties arise from the fact that a Nd:YVO4 crystal has a high stimulated emission cross section.With a fiber coupled laser diode end pumping Nd:YVO4 laser,1.4W of CW output power has obtained under a pump level of 3.5W with optical conversion efficiency of 40%.The Q-switching operation of Nd:YVO4 laser with Cr4+:YAG as the saturable absorber was demonstrated.Q-switched pulses duration is 11.7ns with pulse repetition rate of 22kHz.