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Advances In Far-Infrared Heterodyne Detectors

A review is presented of recent advances in heterodyne detector and receiver technology for the 100 to 1000 µm wavelength region. The discussion is confined to the following four detector types: (1) the Schottky diode, (2) the bulk InSb detector, (3) the Ge:Ga photoconductor and (4) the SIS (luasiparticle mixer.