Electronics Letters · 1992 · 23 citations · 0 references
EngineeringElectrical EngineeringMaterials ScienceOptoelectronicsPhotonicsSemiconductor DevicesHigh-frequency Semiconductor DevicesLaser DiodesLaser OpticsLaser PhysicsPhotonic Integrated CircuitsSemiconductor LasersCurrent DensityDifferential Quantum EfficiencyDiode Laser Threshold CurrentExternal Cavity Laser DiodesExternal Quantum EfficiencyHigh-power Laser DiodesQuantum EfficiencySemiconductor Laser Diodes
Room temperature, continuous wave operation of laser diodes with an emission wavelength of 633 nm at output powers of 900 mW from a single 100 μm wide stripe and 3 W from a monolithic 1 cm bar are reported. A threshold current density of 400 A/cm2 and external differential quantum efficiency of 44% were obtained from 100 μm wide broad-area lasers.