High power output 1.48–1.51 μm continuously graded index separate confinement strained quantum well lasers

Abstract

A record high power output strained-layer InGaAs/InP quantum well laser emitting at 1.48 to 1.51 μm is demonstrated. Maximum cw output as high as 206 mW is obtained from a sample with a cavity length of 890 μm and a facet reflectivity of ∼5 and 85% for the front and the rear facets, respectively. The laser has a threshold of 30 mA and a slope efficiency as high as 0.4 mW/mA.