High average power edge emitting laser diode arrays on silicon microchannel coolers

We have demonstrated high average power output devices in both one‐dimensional (1‐D) and two‐dimensional (2‐D) arrays of laser diodes using efficient edge emitting cleaved bars and silicon microchannel coolers. These packages are based on the rack and stack architecture. For the 1‐D array a cw optical power output of 22.2 W was obtained with 20% electrical to optical conversion efficiency. For the 2‐D array an average optical power density of greater than 100 W/cm2 was obtained at an efficiency of 25%.