Compact Nd:YVO₄ laser system based on a vapor chamber passive cooling technique

A compact Nd:Y V O ₄ laser system based on a vapor chamber passive cooling technique has been developed and explored for the first time, to our best knowledge. An average power of 8.84 W with beam quality of M ²<2.2 and slope efficiency of 44% is experimentally demonstrated, which is better than using the pure copper plate cooling and is similar to using water cooling under the same experimental conditions. This work demonstrates the advantages and promising applications of the vapor chamber cooling technique in solid-state lasers.