Abstract
A new heterodyne receiver has been developed for the submillimeter wavelength region. The mixing element is liquid helium cooled bulk n-InSb in a quantizing magnetic field. The value of the magnetic induction is such that the detector photoresponse is dominated by cyclotron-resonance absorption. Laboratory tests have yielded double-sideband receiver noise temperatures of 250 K at 492 GHz, 350 K at 625 GHz and 510 K at 812 GHz. The magnetic induction for these tests was ≈2.5 KG and the mixer operating temperature was ≈1.6 K.
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Brown, E.R., Keene, J. & Phillips, T.G. A heterodyne receiver for the submillimeter wavelength region based on cyclotron resonance in InSb at low temperatures. Int J Infrared Milli Waves 6, 1121–1138 (1985). https://doi.org/10.1007/BF01019856
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DOI: https://doi.org/10.1007/BF01019856