A continuous-wave optical power density of 200W/cm(2) is reported for
the first time for a 0.1 cm(2) element of a surface emitting GaAs/GaAl
As wafer. The laser facets are cleaved on-wafer by a microcleavage tec
hnique. The output optical beam is reflected by 45 degrees-integrated
beam deflectors situated at a distance of 15 mu m from each laser face
t. The lasers were soldered junction-up on a microchannel CuW cooler.
The drive current at 20 W CW is 40A with a slope efficiency of 0.7W/A.