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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 19 — Jul. 1, 1999
  • pp: 4252–4261

Polarization discrimination of coherently propagating light in turbid media

Vanitha Sankaran, Klaus Schönenberger, Joseph T. Walsh, Jr., and Duncan J. Maitland  »View Author Affiliations


Applied Optics, Vol. 38, Issue 19, pp. 4252-4261 (1999)
http://dx.doi.org/10.1364/AO.38.004252


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Abstract

We describe the use of degree of polarization to discriminate unscattered and weakly scattered light from multiply scattered light in an optically turbid material. We use spatially resolved measurements of the degree of polarization to compare how well linearly and circularly polarized light survives in a sample. Experiments were performed on common tissue phantoms consisting of polystyrene and Intralipid microsphere suspensions and on adipose and arterial tissue. The results indicate that polarization is maintained even after unpolarized irradiance through each sample has been extinguished by several orders of magnitude. The results also show that polarized light propagation in common tissue phantoms is distinctly different from polarized light propagation in the two tissues investigated. Further, these experiments illustrate when polarization is an effective discrimination criterion and when it is not. The potential of a polarization-based discrimination scheme to image through the biological and nonbiological samples investigated here is also discussed.

© 1999 Optical Society of America

OCIS Codes
(170.1650) Medical optics and biotechnology : Coherence imaging
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(260.5210) Physical optics : Photoionization
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media

History
Original Manuscript: December 17, 1998
Revised Manuscript: March 15, 1999
Published: July 1, 1999

Citation
Vanitha Sankaran, Klaus Schönenberger, Joseph T. Walsh, and Duncan J. Maitland, "Polarization discrimination of coherently propagating light in turbid media," Appl. Opt. 38, 4252-4261 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-19-4252

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