Stable High-Power Green Light Generation with Thermally Conductive Periodically Poled Stoichiometric Lithium Tantalate

Abstract

Periodically poled stoichiometric lithium tantalate was used for an efficient green light generation based on frequency doubling of a pulsed Nd:YVO4 laser. The achieved average peak power density of 9.2 MW/cm2 was sufficiently stable without spatial distortion of green light at 532 nm at room temperature (33°C). A small phase matching temperature adjustment (0.5°C) was required at the maximum average output power of 4.4 W owing to its high thermal conductivity.