Japanese Journal of Applied Physics · 1983 · 10 citations · 11 references
EngineeringElectrical EngineeringMaterials ScienceOptoelectronicsSemiconductor DevicesSemiconductor MaterialsLaser DiodesOptical WaveguidesOptoelectronic DevicesOptoelectronic MaterialsQuantum WellsSemiconductor HeterostructuresHeterostructure LasersHeterostructure OptoelectronicsOptical Absorption CoefficientOptical TransmissionQuantum Well Laser DiodesQuantum Well LasersSemiconductor Laser DiodesWaveguide Fabrication
An optical waveguide which has a multi-quantum-well (MQW) structure as an active or core region of the conventional double-hetero (DH) waveguide is attractive because of its low optical transmission loss at the wavelength where it makes stimulated emission when current-injected. This property is confirmed by fabrication a segmented electrode MQW (SE-MQW) laser diode, where only a part of the stripe electrode is current injected and the rest is not injected. The absorption coefficient was measured to be as low as 190 cm -1 for a SE-MQW waveguide, which was in good agreement with the photo-excited results previously reported.
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H. C. Casey, M. B. Panish, T. A. Roth · Journal of The Electrochemical Society · 1979 · 1.7K citations