Spatial Heterodyne Spectroscopy - Laboratory tests of field widened, multiple order, and vacuum ultraviolet systems

Details Spatial Heterodyne Spectroscopy - Laboratory tests of field widened, multiple order, and vacuum ultraviolet systems Spatial Heterodyne Spectroscopy - Laboratory tests of field widened, multiple order, and vacuum ultraviolet systems

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1743...48h&link_type=abstract

In: EUV, X-ray, and gamma-ray instrumentation for astronomy III; Proceedings of the Meeting, San Diego, CA, July 22-24, 1992 (A9

Astronomy and Astrophysics

Astronomy

Far Ultraviolet Radiation, Heterodyning, Spectroscopy, Echelle Gratings, Fabry-Perot Interferometers, High Resolution, Interstellar Matter, Michelson Interferometers, Spectral Resolution

Scientific paper

We describe a new instrumental technique for interference spectroscopy, Spatial Heterodyne Spectroscopy (SHS), which promises to extend into the FUV (1200 A - 2000 A) spectral region the large throughput advantage at high spectral resolution usually associated with Fabry-Perot and Michelson interferometers. In addition, SHS systems are compact in size, can be field-widened to increase their throughput advantage even further, and have no moving parts. SHS appears to be well suited for high resolution, space-based spectroscopy of faint interstellar emission lines in the FUV. In this paper we review the first proof-of-concept laboratory demonstrations of a field widened SHS configuration and a multiple order SHS system, which extends the spectral range of the basic device and present new results of SHS performance in the VUV. The design of an SHS system capable of obtaining velocity resolved spectra of the CIV 1550 doublet from the interstellar medium is also discussed.

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