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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 11 — Apr. 10, 2006
  • pp: 2465–2473

Tungsten source integrated cavity output spectroscopy for the determination of ambient atmospheric extinction coefficient

Jonathan E. Thompson and Heather D. Spangler  »View Author Affiliations

Applied Optics, Vol. 45, Issue 11, pp. 2465-2473 (2006)

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Broadband integrated cavity output spectroscopy (ICOS) utilizing an incoherent tungsten lamp as a spectroscopic source is described. This novel approach has been termed W-ICOS. The technique has been applied to make quantitative measurements of Rayleigh scattering by carbon dioxide between 570 and 590   nm and to make measurements of aerosol and atmospheric extinction. Minimum detectable extinction coefficients ( k ext ) made in a 94   cm optical cavity ranged between 3.4 and 35 Mm - 1 depending on the level of signal averaging employed. The level of sensitivity achieved should allow measurements on static gas samples and regular, quantitative measurements of the atmospheric extinction coefficient.

© 2006 Optical Society of America

OCIS Codes
(010.1100) Atmospheric and oceanic optics : Aerosol detection
(010.1310) Atmospheric and oceanic optics : Atmospheric scattering
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(290.0290) Scattering : Scattering

Original Manuscript: August 17, 2005
Revised Manuscript: November 1, 2005
Manuscript Accepted: November 2, 2005

Jonathan E. Thompson and Heather D. Spangler, "Tungsten source integrated cavity output spectroscopy for the determination of ambient atmospheric extinction coefficient," Appl. Opt. 45, 2465-2473 (2006)

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