Pulse peaks synchronize dual-wavelength laser based on Q-switch delay trigger

Abstract

In this paper, an all-solid-state Nd:YVO4 laser with peak synchronize output of 1064/1342 nm dual-wavelength Q-switched pulse is designed. Double-cavity structure with single Nd:YVO4 crystal and double RbTiOPO4 (RTP) electro-optic (EO) Q-switch is built. At repetition frequency of 10 kHz, taking the trigger time of EO Q-switch at 1342 nm as reference, at the delay time of EO Q-switch at 1064 nm as 1.3 μs, the pulse peak synchronize dual-wavelength laser is obtained, and the pulse power is 1.63 W and 1.63 W with the width is 55.64 ns and 105.2 ns respectively.The beam quality is Mx2=1.61,Mx2=1.64 and Mx2=1.43,My2=1.54, respectively.