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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 29 — Oct. 10, 2007
  • pp: 7297–7307

Doppler asymmetric spatial heterodyne spectroscopy (DASH): concept and experimental demonstration

Christoph R. Englert, David D. Babcock, and John M. Harlander  »View Author Affiliations

Applied Optics, Vol. 46, Issue 29, pp. 7297-7307 (2007)

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We describe the concept of Doppler asymmetric spatial heterodyne spectroscopy (DASH) and present a laboratory Doppler-shift measurement using an infrared laser line. DASH is a modification of spatial heterodyne spectroscopy optimized for high precision, high accuracy Doppler-shift measurements of atmospheric emission lines either from the ground or a satellite. We discuss DASH design considerations, field widening, thermal stability and tracking, noise propagation, advantages, and trade-offs. DASH interferometers do not require moving optical parts and can be built in rugged, compact packages, making them suitable for space flight and mobile ground instrumentation.

© 2007 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms

ToC Category:

Original Manuscript: June 26, 2007
Manuscript Accepted: August 13, 2007
Published: October 8, 2007

Christoph R. Englert, David D. Babcock, and John M. Harlander, "Doppler asymmetric spatial heterodyne spectroscopy (DASH): concept and experimental demonstration," Appl. Opt. 46, 7297-7307 (2007)

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