THIS: a tuneable heterodyne infrared spectrometer

Details THIS: a tuneable heterodyne infrared spectrometer THIS: a tuneable heterodyne infrared spectrometer

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4486..140w&link_type=abstract

Proc. SPIE Vol. 4486, p. 140-147, Infrared Spaceborne Remote Sensing IX, Marija Strojnik; Bjorn F. Andresen; Eds.

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We present the newly developed transportable setup of the Cologne Tuneable Heterodyne Infrared Spectrometer (THIS) designed for astronomical observations aboard the Stratospheric Observatory For Infrared Astronomy (SOFIA). With THIS a competitive tuneable heterodyne spectrometer for the mid-infrared is available that will allow measurements in a wide field of astronomical applications. Frequency tuneability over a wide range provided by the use of semiconductor lasers as local oscillators (LO) allows a variety of molecules in the mid infrared to be observed under very high frequency resolution. With the use of newly developed quantum-cascade lasers (QCL) a sensitivity close to the quantum limit will be in reach.

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