Room-temperature continuous-wave operation of GaInNAsSb laser diodes at 1.55 µm

Abstract

The first 1.55 µm room-temperature continuous-wave (CW) operation of GaAs-based laser diodes utilising GaInNAsSb/GaNAs double quantum well active regions grown by molecular beam epitaxy is reported. In electrically-pumped CW operation the narrow ridge waveguide devices have a room temperature lasing wavelength of 1550 nm near threshold, increasing to 1553 nm at thermal rollover. The CW threshold current was 132 mA for a 3×589 µm device, with a characteristic temperature of 83 K, measured in pulsed mode between 20 and 70°C.