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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 11 — Aug. 25, 2010

Mueller matrix measurements on absorbing turbid medium

Mahesh Kumar Swami, Sandeep Manhas, Harishankar Patel, and Pradeep Kumar Gupta  »View Author Affiliations


Applied Optics, Vol. 49, Issue 18, pp. 3458-3464 (2010)
http://dx.doi.org/10.1364/AO.49.003458


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Abstract

Polarization parameters of diffuse backscattered light from a turbid sample are sensitive to its structural properties and can, therefore, be used to probe morphological features of tissue and, thus, monitor changes that arise due to a disease. Extraction of morphological information from measured polarization param eters, however, requires a careful understanding of the dependence of these on factors such as size, size distribution, shape, and dielectric constant of the scatterers, which are often quite involved. In particular, the presence of absorption complicates the dependence of polarization parameters on tissue morphological features. We have found that, while for medium comprising small size scatterers (Rayleigh scatterers), the depolarization shows the expected decrease with an increase in the absorption of the scattering medium, a counterintuitive behavior was observed for larger size ( > λ ) scatterers. Further analysis of the results suggests that the observed behavior might arise due to the relative contribution of two depolarizing processes, one resulting from a series of out-of-plane scattering and the other due to the angular variation of the state of polarization in a single scattering event.

© 2010 Optical Society of America

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(170.7050) Medical optics and biotechnology : Turbid media
(260.5430) Physical optics : Polarization
(290.4210) Scattering : Multiple scattering

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: December 16, 2009
Revised Manuscript: April 26, 2010
Manuscript Accepted: May 21, 2010
Published: June 14, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Mahesh Kumar Swami, Sandeep Manhas, Harishankar Patel, and Pradeep Kumar Gupta, "Mueller matrix measurements on absorbing turbid medium," Appl. Opt. 49, 3458-3464 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-49-18-3458

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