All-solid-state Nd:YVO4 laser at 1342 nm under 914 nm diode laser pumping

Abstract

A Nd:YVO 4 crystal was pumped directly into the emitting level by a laser diode at 914 nm. We achieved an output power of 1.46 W at 1342 nm for an incident pump power of 18.3 W, corresponding to an optical to optical conversion efficiency of 8.0%. The fluctuation of the output power was better than 2.3% in the given 30 min. The beam quality M 2 factor value was equal to 1.15 at the maximum output power.