High-Performance Small-Radius Half-Racetrack-Ring-Resonator InAlGaAs Quantum Well Laser Diodes Fabricated via Non-Selective Wet Oxidation

Utilizing the high index contrast of a deep-etched, non-selectively oxidized AlGaAs/InAlGaAs GRINSCH heterostructure, half-racetrack-ring resonator lasers with peak output powers of 239 mW for a r=25 μm bend radius, and 40 mW for r=8 μm, are demonstrated