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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 24, Iss. 9 — May. 1, 1999
  • pp: 590–592

Ultraviolet filtered Rayleigh scattering temperature measurements with a mercury filter

Azer P. Yalin and Richard B. Miles  »View Author Affiliations


Optics Letters, Vol. 24, Issue 9, pp. 590-592 (1999)
http://dx.doi.org/10.1364/OL.24.000590


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Abstract

We report the development of ultraviolet filtered Rayleigh scattering as a diagnostic tool for measurements of gas properties. A frequency-tripled narrow-linewidth Ti:sapphire laser illuminates a sample, and Rayleigh scattered light is imaged through a mercury-vapor absorption filter. Working in the ultraviolet improves the signal-to-noise ratio compared with that previously obtained in the visible as the result of an enhanced scattering cross section as well as the nearly ideal properties of the mercury filter. Tuning the laser through the absorption notch of the filter is a means of probing the scattering line shape, which contains temperature information. Temperature measurements of air are shown to have uncertainties of less than 3%.

© 1999 Optical Society of America

OCIS Codes
(280.2490) Remote sensing and sensors : Flow diagnostics
(290.3700) Scattering : Linewidth
(290.5870) Scattering : Scattering, Rayleigh
(350.2450) Other areas of optics : Filters, absorption

Citation
Azer P. Yalin and Richard B. Miles, "Ultraviolet filtered Rayleigh scattering temperature measurements with a mercury filter," Opt. Lett. 24, 590-592 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-9-590

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