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Proceedings Paper

Polarization memory effect and visibility improvement of targets in turbid media
Author(s): Xiaohui Ni; S. A. Kartazayeva; Wubao Wang; Wei Cai; S. K. Gayen; R. R. Alfano
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Paper Abstract

The backscattering of circularly polarized (CP) light has been investigated using experiments and an analytical cumulant solution of the vector radiative transfer equation. The expression of the exact spatial cumulants of light distribution function has been derived. Both experimental and theoretical studies show that the helicity of the incident circular polarization is maintained in the light backscattered from large particle suspensions. Reflection from an embedded target inside the turbid medium reverses the helicity of the incident circular polarization. Polarization memory imaging makes use of this difference in helicity between light reflected from the target and that from the scattering medium and significantly enhances the image contrast by selecting out the circularly cross-polarized light. We experimentally demonstrate the superior image quality for target inside large polystyrene particle suspensions in water.

Paper Details

Date Published: 13 February 2007
PDF: 8 pages
Proc. SPIE 6434, Optical Tomography and Spectroscopy of Tissue VII, 64340N (13 February 2007); doi: 10.1117/12.701315
Show Author Affiliations
Xiaohui Ni, City College and Graduate School, CUNY (United States)
S. A. Kartazayeva, City College and Graduate School, CUNY (United States)
Wubao Wang, City College and Graduate School, CUNY (United States)
Wei Cai, City College and Graduate School, CUNY (United States)
S. K. Gayen, City College and Graduate School, CUNY (United States)
R. R. Alfano, City College and Graduate School, CUNY (United States)


Published in SPIE Proceedings Vol. 6434:
Optical Tomography and Spectroscopy of Tissue VII
Britton Chance; Robert R. Alfano; Bruce J. Tromberg; Mamoru Tamura; Eva Marie Sevick-Muraca, Editor(s)

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