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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 18 — Sep. 8, 2003
  • pp: 2198–2205

Depolarization of light in tissue phantoms - effect of a distribution in the size of scatterers

N. Ghosh, H. S. Patel, and P. K. Gupta  »View Author Affiliations


Optics Express, Vol. 11, Issue 18, pp. 2198-2205 (2003)
http://dx.doi.org/10.1364/OE.11.002198


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Abstract

We show that the depolarization behavior of light on propagation through a sample having a mixture of suspension of monodisperse polystyrene microspheres of two different sizes (mean diameter 0.11µm and 1.08 µm) is dominated by the smaller of the two scatterers. In contrast the estimates for the anisotropy parameter (g) for this sample, obtained from goniophotometric measurement, are observed to be closer to the value corresponding to the larger of the two scatterers. These results imply that the depolarization behavior of light in biological tissue (having a distribution of scatterer size) would be different from that of a matched monodisperse scattering sample having the same value of anisotropy parameter (g) and optical thickness (τ=µs×d, µs is scattering coefficient and d being the physical thickness).

© 2003 Optical Society of America

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(290.4210) Scattering : Multiple scattering

ToC Category:
Research Papers

History
Original Manuscript: July 9, 2003
Revised Manuscript: August 22, 2003
Published: September 8, 2003

Citation
N. Ghosh, H. Patel, and P. Gupta, "Depolarization of light in tissue phantoms - effect of a distribution in the size of scatterers," Opt. Express 11, 2198-2205 (2003)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-11-18-2198


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