2.3 μm range InP-based type-II quantum well Fabry-Perot lasers heterogeneously integrated on a silicon photonic integrated circuit

Heterogeneously integrated InP-based type-II quantum well Fabry-Perot lasers on a silicon waveguide circuit emitting in the 2.3 mu m wavelength range are demonstrated. The devices consist of a W-shaped InGaAs/GaAsSb multi-quantum-well gain section, III-V/silicon spot size converters and two silicon Bragg grating reflectors to form the laser cavity. In continuous-wave ( CW) operation, we obtain a threshold current density of 2.7 kA/cm(2) and output power of 1.3 mW at 5 degrees C for 2.35 mu m lasers. The lasers emit over 3.7 mW of peak power with a threshold current density of 1.6 kA/cm(2) in pulsed regime at room temperature. This demonstration of heterogeneously integrated lasers indicates that the material system and heterogeneous integration method are promising to realize fully integrated III-V/silicon photonics spectroscopic sensors in the 2 mu m wavelength range. (C) 2016 Optical Society of America