Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ssrv...17..661m&link_type=abstract
(Workshop on Coherent Detection in Astronomy, Rhenen, Netherlands, Apr. 25, 26, 1974.) Space Science Reviews, vol. 17, July 1975
Astronomy and Astrophysics
Astronomy
6
Absorption Spectroscopy, Astronomical Spectroscopy, Infrared Spectrometers, Optical Heterodyning, Semiconductor Lasers, Bandwidth, Black Body Radiation, Lead Selenides, Line Shape, Nitrous Oxides, Tuning
Scientific paper
The first 8.5 microns infrared heterodyne spectrometer has been constructed using tuneable semiconductor (PbSe) diode lasers and was used to measure absorption line profiles of N2O in the laboratory, as well as black-body emission from the moon and from Mars. Spectral information was recorded over a 200 MHz bandwidth using an 8-channel filter bank. The resolution was 25 MHz (6 millionths of a micron), and the minimum detectable (black-body) power was approximately 1 times 10 to the minus 16th power W for 8 min of integration. The results demonstrate the usefulness of heterodyne spectroscopy for the study of remote and local sources in the infrared.
Buehl D.
Cohen Samuel
Kostiuk Theodor,
Mumma Michael
von Thüna P. C.
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