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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 13 — May. 1, 1999
  • pp: 2737–2742

Method of phase-Doppler anemometry free from the measurement-volume effect

Huihe Qiu and Chin Tsau Hsu  »View Author Affiliations


Applied Optics, Vol. 38, Issue 13, pp. 2737-2742 (1999)
http://dx.doi.org/10.1364/AO.38.002737


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Abstract

A novel method is developed to improve the accuracy of particle sizing in laser phase-Doppler anemometry (PDA). In this method the vector sum of refractive and reflective rays is taken into consideration in describing a dual-mechanism-scattering model caused by a nonuniformly illuminated PDA measurement volume. The constraint of the single-mechanism-scattering model in the conventional PDA is removed. As a result the error caused by the measurement-volume effect, which consists of a Gaussian-beam defect and a slit effect, can be eliminated. This new method can be easily implemented with minimal modification of the conventional PDA system. The results of simulation based on the generalized Lorenz–Mie theory show that the new method can provide a PDA system free from the measurement-volume effect.

© 1999 Optical Society of America

OCIS Codes
(010.3920) Atmospheric and oceanic optics : Meteorology
(290.0290) Scattering : Scattering
(290.4020) Scattering : Mie theory
(290.5850) Scattering : Scattering, particles
(350.4990) Other areas of optics : Particles

History
Original Manuscript: November 4, 1998
Revised Manuscript: February 3, 1999
Published: May 1, 1999

Citation
Huihe Qiu and Chin Tsau Hsu, "Method of phase-Doppler anemometry free from the measurement-volume effect," Appl. Opt. 38, 2737-2742 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-13-2737


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References

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