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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 15, Iss. 7 — Jul. 1, 1998
  • pp: 1896–1908

Optics InfoBase > JOSA A > Volume 15 > Issue 7 > Measurement of smoothed Wigner phase-space distributions for small-angle scattering in a turbid medium

Measurement of smoothed Wigner phase-space distributions for small-angle scattering in a turbid medium

A. Wax and J. E. Thomas  »View Author Affiliations


JOSA A, Vol. 15, Issue 7, pp. 1896-1908 (1998)
http://dx.doi.org/10.1364/JOSAA.15.001896


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Abstract

We study Wigner phase-space distributions W(x, p) in position (x) and momentum (p) for light undergoing multiple small-angle scattering in a turbid medium. Smoothed Wigner phase-space distributions are measured by using a heterodyne technique that achieves position and momentum resolution determined by the width and the diffraction angle of the local oscillator beam. The sample consists of 5.7-µm-radius polystyrene spheres suspended in a water–glycerol mixture. The momentum distribution of the transmitted light is found to contain a ballistic peak, a narrow diffractive pedestal, and a broad background. The narrow diffractive pedestal is found to decay more slowly than the ballistic peak as the concentration of scatterers is increased. The data are in excellent agreement with a simple theoretical model that explains the behavior of the narrow pedestal by including multiple diffractive scattering and treating large-angle scattering as a loss.

© 1998 Optical Society of America

OCIS Codes
(040.2840) Detectors : Heterodyne
(110.7050) Imaging systems : Turbid media
(170.1650) Medical optics and biotechnology : Coherence imaging
(290.4210) Scattering : Multiple scattering
(290.5820) Scattering : Scattering measurements

History
Original Manuscript: October 15, 1997
Revised Manuscript: January 16, 1998
Manuscript Accepted: February 4, 1998
Published: July 1, 1998

Citation
A. Wax and J. E. Thomas, "Measurement of smoothed Wigner phase-space distributions for small-angle scattering in a turbid medium," J. Opt. Soc. Am. A 15, 1896-1908 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-7-1896

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