3.9 W CW power from sub-monolayer quantum dot diodelaser

Abstract
Diode lasers emitting at 947 nm with sub-monolayer deposited InAs/GaAs quantum dots in the active region have been fabricated. The 3.9 W output power limited by catastrophic optical damage and the peak conversion efficiency of 50.5% were achieved at 10°C in 100 µm wide stripes with uncoated facets.