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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 22 — Aug. 1, 2010
  • pp: 4217–4227

Spontaneous Rayleigh–Brillouin scattering of ultraviolet light in nitrogen, dry air, and moist air

Benjamin Witschas, Maria O. Vieitez, Eric-Jan van Duijn, Oliver Reitebuch, Willem van de Water, and Wim Ubachs  »View Author Affiliations


Applied Optics, Vol. 49, Issue 22, pp. 4217-4227 (2010)
http://dx.doi.org/10.1364/AO.49.004217


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Abstract

Atmospheric lidar techniques for the measurement of wind, temperature, and optical properties of aerosols rely on the exact knowledge of the spectral line shape of the scattered laser light on molecules. We report on spontaneous Rayleigh–Brillouin scattering measurements in the ultraviolet at a scattering angle of 90 ° on N 2 and on dry and moist air. The measured line shapes are compared to the Tenti S6 model, which is shown to describe the scattering line shapes in air at atmospheric pressures with small but significant deviations. We demonstrate that the line profiles of N 2 and air under equal pressure and temperature conditions differ significantly, and that this difference can be described by the S6 model. Moreover, we show that even a high water vapor content in air up to a volume fraction of 3.6 vol. % has no influence on the line shape of the scattered light. The results are of relevance for the future spaceborne lidars on ADM-Aeolus (Atmospheric Dynamics Mission) and EarthCARE (Earth Clouds, Aerosols, and Radiation Explorer).

© 2010 Optical Society of America

OCIS Codes
(280.1310) Remote sensing and sensors : Atmospheric scattering
(280.3640) Remote sensing and sensors : Lidar
(290.5830) Scattering : Scattering, Brillouin
(300.6390) Spectroscopy : Spectroscopy, molecular

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: April 7, 2010
Revised Manuscript: June 17, 2010
Manuscript Accepted: June 23, 2010
Published: July 27, 2010

Citation
Benjamin Witschas, Maria O. Vieitez, Eric-Jan van Duijn, Oliver Reitebuch, Willem van de Water, and Wim Ubachs, "Spontaneous Rayleigh–Brillouin scattering of ultraviolet light in nitrogen, dry air, and moist air," Appl. Opt. 49, 4217-4227 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-22-4217

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