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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 32, Iss. 26 — Sep. 10, 1993
  • pp: 5089–5091

Particle image velocimetry: high-speed transparency scanning and correlation-peak location in optical processing systems

Z. Q. Mao, N. A. Halliwell, and J. M. Coupland  »View Author Affiliations


Applied Optics, Vol. 32, Issue 26, pp. 5089-5091 (1993)
http://dx.doi.org/10.1364/AO.32.005089


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Abstract

In order to exploit the full potential offered by optical correlation processing in the analysis of transparencies obtained by particle image velocimetry one needs to advance the transparency and to track the position of correlation peaks at great speed. In the following, this procedure is discussed with reference to an optical analysis system based on a high-speed ferroelectric optically addressed spatial light modulator. We present a system that uses scanning optics both to scan through the input transparency and to locate the correlation peaks in the resulting optical output distributions as a practical solution to the problem. The feasibility of this approach is demonstrated at a processing speed of ~ 500 autocorrelations/s when a one-dimensional acousto-optic output scanning device is used.

© 1993 Optical Society of America

History
Original Manuscript: January 14, 1993
Published: September 10, 1993

Citation
Z. Q. Mao, N. A. Halliwell, and J. M. Coupland, "Particle image velocimetry: high-speed transparency scanning and correlation-peak location in optical processing systems," Appl. Opt. 32, 5089-5091 (1993)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-32-26-5089


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References

  1. C. J. D. Pickering, N. A. Halliwell, “Particle image velocimetry: a new field measurement technique,” Optical Measurements in Fluid Mechanics, Inst. Phys. Conf. Ser. 77, 147–152 (1985).
  2. J. M. Huntley, “Speckle photography fringe analysis: assessment of current algorithms,” Appl. Opt. 28, 4316–4322 (1989). [CrossRef] [PubMed]
  3. J. M. Coupland, N. A. Halliwell, “Particle image velocimetry: rapid transparency analysis using optical correlation,” Appl. Opt. 27, 1919–1921 (1988). [CrossRef] [PubMed]
  4. R. C. Chittick, W. A. Crossland, J. R. Broddehurst, P. Cambon, M. Killinger, J.-L. de Bougrenet de la Tocnoye, “Development and applications of a truly bistable optically addressed spatial light modulator,” in Spatial Light Modulators and Their Applications, Vol. 14 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 136–140.

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