Applied Physics Letters · 2004 · 227 citations · 12 references
EngineeringElectrical EngineeringPhysicsOptoelectronicsPhotonicsSemiconductor DevicesInfrared DetectorsOptoelectronic DevicesPhotodetectorsQuantum WellsSemiconductor PhysicsTerahertz PhotonicsInfrared PhotodetectorsPhononsQuantum Well HeterostructuresQuantum Well Infrared PhotodetectorsQuantum Well PhotodetectorsTerahertz DetectorsTerahertz PhotodetectorsTerahertz Semiconductor Devices
The design and projected performance of quantum-well infrared photodetectors (QWIP) for the terahertz (1–10 THz) or the very-far-infrared region are presented together with our initial demonstration of a GaAs/AlGaAs QWIP working at photon energies below the optical phonons. We point out the problem with this initial device, discuss possible causes, and suggest areas of improvement.
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