High-efficiency, high-temperature mid-infrared (λ≥ 4 µm)InAsSb/GaSb lasers

Abstract
With 2 µm pumping, a 4 µm InAsSb/GaSb double heterostructure laser operated at 86.5 K yielded 11% slope power efficiency and 16 mW CW power. Pulsed operation up to 211 K was observed. The threshold and efficiency were studied as functions of temperature and pump wavelength.