NASA NTRS · 19880032433
30-micron heterodyne receiver
Abstract
Advantages and constraints of remote measurements using heterodyne spectroscopy near 30 microns are discussed. The state of the art of wideband HgCdTe photomixers and PbSnSe diode-laser local oscillators being developed for FIR heterodyne receivers is described. The first compact 30-micron heterodyne radiometer was built, and initial results at 28-microns show about 2-percent 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 microns.
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Kostiuk, Theodor, Spears, David L.. 1987-10-01. 30-micron heterodyne receiver. https://ntrs.nasa.gov/citations/19880032433
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