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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 18, Iss. 3 — Mar. 1, 2001
  • pp: 622–630

Prediction of the photodetector signal generated by Doppler-induced speckle fluctuations: theory and some validations

Alexander Serov, Wiendelt Steenbergen, and Frits de Mul  »View Author Affiliations

JOSA A, Vol. 18, Issue 3, pp. 622-630 (2001)

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A theoretical framework is proposed for describing the laser Doppler photodetector signal. The theory allows for predicting the power of the photocurrent fluctuations. It is valid for a detector of arbitrary size. The input data required for application of the theory are the angular distribution of the detected light, the fraction of Doppler-shifted photons, and the active detector size. The theory is based on the time-domain approach to the statistics of dynamic speckle patterns on the photodetector. An experiment was carried out to validate some aspects of our theory. The consequences of the speckle dynamics for the various modes of laser Doppler flowmetry are discussed.

© 2001 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(290.5820) Scattering : Scattering measurements

Alexander Serov, Wiendelt Steenbergen, and Frits de Mul, "Prediction of the photodetector signal generated by Doppler-induced speckle fluctuations: theory and some validations," J. Opt. Soc. Am. A 18, 622-630 (2001)

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