Tuneable Heterodyne Infrared Spectrometer for atmospheric and astronomical studies

Details Tuneable Heterodyne Infrared Spectrometer for atmospheric and astronomical studies Tuneable Heterodyne Infrared Spectrometer for atmospheric and astronomical studies

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apopt..41.2978s&link_type=abstract

Applied Optics, vol. 41, iss. no. 15, p. 2978-2984

Physics

Optics

10

Atmospheric Chemistry, Detection, Frequency Stability, Infrared Spectrometers, Spectroscopic Analysis, Telescopes, Tuning

Scientific paper

The transportable setup of the Cologne Tuneable Heterodyne Infrared Spectrometer (THIS) is presented. Frequency tuneability over a wide range provided by the use of tuneable diode lasers as local oscillators (LO) allows a variety of molecules in the mid-infrared to be observed. Longtime integration, which is essential for astronomical observations, is possible owing to tight frequency control of the LO with optical feedback from an external cavity. THIS is developed to fly on the Stratospheric Observatory for Infrared Astronomy beginning in 2006 but can also be used on different types of ground-based telescopes.

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