Applied Physics Letters · 1987 · 61 citations · 10 references
EngineeringElectrical EngineeringMaterials ScienceOpticsOptoelectronicsPhotonicsLaser DiodesLaser OpticsLaser PhysicsOptical SourcesPhotonic Integrated CircuitsSemiconductor LasersBeam DivergenceDifferential Quantum EfficiencyDistributed Bragg Reflector LasersExternal Quantum EfficiencyPulsed LasersPulsed OperationQuantum EfficiencyQuantum Well Lasers
The first cw operation of an AlGaAs/GaAs distributed Bragg reflector laser was achieved at room temperature with a threshold current as low as 38 mA. Surface emission exceeding 4 mW was obtained with an external differential quantum efficiency of 9% and a beam divergence of 0.17°×10°. A two-dimensional laser array with 3×4 gratings was also fabricated and an output power exceeding 500 mW was obtained under pulsed condition.
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