Room-temperature operation of lattice-matched InP/Ga0.47In0.53As/InP double-heterostructure lasers grown by MBE

Abstract
Molecular beam epitaxial(MBE)growth of InP/Ga0.47In0.53As/InP double heterostructures has resulted in pulsed room‐temperature lasing at 1.65 μm. Thresholds as low as 3.2 kA/cm2 for a 0.6‐μm‐thick layer has been achieved. These results were achieved by ’’premixing’’ the Ga and In together in a common source oven and precisely monitoring the Ga/In flux ratio during the growth of the Ga0.47In0.53As layer. Cd diffusion from a vapor source allowed us to pdope the top InP layer in the as‐grown MBE wafer.