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30μm Heterodyne receiver

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Abstract

Advantages and constraints of remote measurements using heterodyne spectroscopy near 30 μm are discussed. The state of the art of wideband HgCdTe photomixers and PbSnSe diode laser local oscillators being developed for far infrared heterodyne receivers is described. The first compact 30 μm heterodyne radiometer was built and initial results at 28 μm show about 2% mixer efficiency for a 500 MHz bandwidth receiver. Factors limiting receiver performance are discussed, along with the projected sensitivity of new interdigitated-electrode HgCdTe photoconductor mixers being developed for operation up to 200 μm.

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Authors and Affiliations

  1. Planetary Systems Branch Laboratory for Extraterrestrial Physics, NASA Goddard Space Flight Center, 20771, Greenbelt, MD

    Theodor Kostiuk

  2. Lincoln Laboratory, Massachusetts Institute of Technology, 02173, Lexington, MA

    David L. Spears

Authors
  1. Theodor Kostiuk
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  2. David L. Spears
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Additional information

Work supported by the Sensors Programs of the National Aeronautics and Space Administration, Office of Aeronautics and Space Technology.

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Kostiuk, T., Spears, D.L. 30μm Heterodyne receiver. Int J Infrared Milli Waves 8, 1269–1279 (1987). https://doi.org/10.1007/BF01011078

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  • DOI: https://doi.org/10.1007/BF01011078

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