VCSEL end-pumped 1319nm Nd:YAG Q-switched laser

Abstract

1319nm lasers have important applications in optical communication, LIDAR, laser display, laser medical, etc. In applications such as LIDAR, reliable operation over a wide temperature range is a key indicator of the laser. Vertical cavity surface emitting lasers are new pump sources for all-solid-state lasers because of their narrow linewidth, small temperature drift coefficient, and two-dimensional expansion. In this paper, we report an 808nm VCSEL end-pumped Nd:YAG 1319nm Q-switched laser that can operate stably over a wide temperature range, The whole laser is dissipated by natural conduction cooling, the VCSEL array is collimated by a two-dimensional microlens array for beam shaping, and Nd:YAG is used as the dielectric crystal to obtain a 1319nm laser output with a maximum single pulse energy of 2.8mJ and a beam quality of M 2 <1.5 by passive Q-switching.