Polarization memory effect and visibility improvement of targets in turbid media

Xiaohui Ni; S. A. Kartazayeva; Wubao Wang; Wei Cai; S. K. Gayen; R. R. Alfano

doi:10.1117/12.701315

13 February 2007 Polarization memory effect and visibility improvement of targets in turbid media

Xiaohui Ni, S. A. Kartazayeva, Wubao Wang, Wei Cai, S. K. Gayen, R. R. Alfano

Proceedings Volume 6434, Optical Tomography and Spectroscopy of Tissue VII; 64340N (2007) https://doi.org/10.1117/12.701315
Event: SPIE BiOS, 2007, San Jose, California, United States

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.

Citation Download Citation

Xiaohui Ni, S. A. Kartazayeva, Wubao Wang, Wei Cai, S. K. Gayen, and R. R. Alfano "Polarization memory effect and visibility improvement of targets in turbid media", Proc. SPIE 6434, Optical Tomography and Spectroscopy of Tissue VII, 64340N (13 February 2007); https://doi.org/10.1117/12.701315

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