QUANTUM STRUCTURES FOR FAR-INFRARED DETECTION

FIR photon detector development starting from the extrinsic detectors for LWIR to FIR wavelengths are presented. Several other types of IR detectors, including the cutoff wavelength extension into the FIR range for quantum well infrared photodetectors (QWIPs), are summarized. Efforts in developing p-GaAs homojunction interfacial work-function internal photoemission (HIWIP) far-infrared detectors and the most reason developments on GaAs/AlGaAs HEterojunction interfacial workfunction internal photoemission (HEIWIP) far-infrared detectors are presented.