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Proceedings Article

Near infrared cryogenic tunable solid Fabry-Perot spectrometer

[+] Author Affiliations
Alexander S. Kutyrev

Science Systems and Applications, Inc. (USA) and NASA Goddard Space Flight Ctr. (USA)

Charles L. Bennett, S. Harvey Moseley, David Rapchun

NASA Goddard Space Flight Ctr. (USA)

Kenneth P. Stewart

Naval Research Lab. (USA)

Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, 1172 (September 30, 2004); doi:10.1117/12.551911
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From Conference Volume 5492

  • Ground-based Instrumentation for Astronomy
  • USA | June 21, 2004

abstract

We have developed a high resolution near-infrared temperature tunable cryogenic spectrometer with solid Fabry-Perot etalons. It is designed and built for diffuse emission of ionized hydrogen Brackett-gamma line studies, although with the appropriate pre-filter it can be configured for any near infrared lines. The etalons made from silicon and germanium operate near 77K. The high refractive index of these etalons allows for the construction of a very compact spectrometer. Germanium etalon with 20mm clear aperture is equivalent to a gas spaced Fabry-Perot interferometer of about 80 mm in diameter. A strong temperature dependence of the refractive index for these two materials makes it easy to tune etalons. Combination of these factors allowed to build a compact, high resolution (R=12000) high throughput instrument.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Alexander S. Kutyrev ; Charles L. Bennett ; S. Harvey Moseley ; David Rapchun and Kenneth P. Stewart
"Near infrared cryogenic tunable solid Fabry-Perot spectrometer", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, 1172 (September 30, 2004); doi:10.1117/12.551911; http://dx.doi.org/10.1117/12.551911


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