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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. 2, Iss. 7 — Jul. 16, 2007

Influence of size parameter and refractive index of the scatterer on polarization-gated optical imaging through turbid media

Prashant Shukla, R. Sumathi, Sharad Gupta, and Asima Pradhan  »View Author Affiliations


JOSA A, Vol. 24, Issue 6, pp. 1704-1713 (2007)
http://dx.doi.org/10.1364/JOSAA.24.001704


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Abstract

The influence of incident polarized light, refractive index, and size parameter of the scatterer on achievable resolution and contrast (image quality) of polarization-gated transillumination imaging in turbid media is reported here. Differential polarization detection led to significant improvement of image quality of an object embedded in a medium of small-sized scatterers (diameter D λ , isotropic scattering medium, anisotropy parameter g 0.2 ), especially using circular polarization. In contrast, for anisotropic scattering media composed of larger-sized scatterers ( D λ , g 0.7 ) , the improvement in image quality was less pronounced using either linear or circular polarization gating when the refractive index of the scatterer was high ( n s = 1.59 ) , but for a lower value of refractive index ( n s = 1.37 ) , image quality improved with the differential circular polarization gating. We offer a plausible explanation for these observations.

© 2007 Optical Society of America

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(290.7050) Scattering : Turbid media

ToC Category:
Scattering

History
Original Manuscript: August 1, 2006
Revised Manuscript: December 3, 2006
Manuscript Accepted: December 4, 2006
Published: May 9, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Prashant Shukla, R. Sumathi, Sharad Gupta, and Asima Pradhan, "Influence of size parameter and refractive index of the scatterer on polarization-gated optical imaging through turbid media," J. Opt. Soc. Am. A 24, 1704-1713 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-24-6-1704

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