Effects of heatsink on the performance of high power semiconductor lasers

we report on our investigation of the impacts of different thermal configurations of chip-on-submounts (COS) on the performance of high power semiconductor lasers. Two types of submounts are studied; one is AlN sub-mount, and the other is AlN submount with both top and bottom surfaces being coated with thick copper layers. Both theoretical analysis and experiments are performed. Our results show COS with AlN submount coated with thick copper layers has improved thermal and laser performance.