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Proceedings Article

Miniaturized, 9--12 um heterodyne spectrometer with space qualifiable design features

[+] Author Affiliations
David A. Glenar, M. J. Mumma, Theodore Kostiuk, H. Huffman, John J. Degnan

NASA/Goddard Space Flight Ctr. (USA)

Hemant H. Dave

Applied Research Corp. (India)

Urs E. Hochuli, Paul R. Haldemann

Univ. of Maryland (USA)

Proc. SPIE 1235, Instrumentation in Astronomy VII, 933 (July 1, 1990); doi:10.1117/12.19156
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From Conference Volume 1235

  • Instrumentation in Astronomy VII
  • David L. Crawford
  • Tucson, AZ | February 11, 1990

abstract

A demonstration-prototype CO2-laser heterodyne spectrometer operating at 9-12 microns and suitable for long-term space missions is described and illustrated with extensive diagrams, drawings, photographs, and graphs of test performance data. The spectrometer has total volume 0.63 cu m, mass 30 kg, and power requirement 60-70 W, compatible with miniature-class Space Shuttle experiment payload specifications. It comprises three modules: (1) an optical front end with reflecting optics, a 2-GHz BW HgCdTe photomixer, and a 0-2-GHz 40-dB RF preamplifier; (2) a local oscillator with an RF-excited waveguide CO2 laser, a 75-percent-efficiency RF amplifier, a stepper-driven grating mode selector, and an etalon stabilized for over 30,000 h of use; and (3) an RF-filter-bank spectral-line receiver with a 25-MHz RF channel, 1.6-GHz IF spectral coverage, onboard instrument control, a serial link to the host computer, and highly integrated design.

© (1990) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

David A. Glenar ; M. J. Mumma ; Theodore Kostiuk ; H. Huffman ; John J. Degnan, et al.
"Miniaturized, 9--12 um heterodyne spectrometer with space qualifiable design features", Proc. SPIE 1235, Instrumentation in Astronomy VII, 933 (July 1, 1990); doi:10.1117/12.19156; http://dx.doi.org/10.1117/12.19156


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