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Degree of polarization in laser speckles from turbid media: Implications in tissue optics

Li, Jun and Yao, Gang and Wang, Lihong V. (2002) Degree of polarization in laser speckles from turbid media: Implications in tissue optics. Journal of Biomedical Optics, 7 (3). pp. 307-312. ISSN 1083-3668. doi:10.1117/1.1483313.

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The degree of polarization (DOP) of laser-speckle fields, where the speckles were generated by a polarized laser beam incident upon two kinds of samples: ground glass and wax, was investigated within a single coherence area as well as over multiple coherence areas. For the surface-scattering ground glass, the incident polarization state was preserved in the speckle field, and hence the DOP remained at unity regardless of the area of detection. For the volume-scattering wax, the polarization states varied with positions in the field, and consequently the DOP depended on the area of detection: the DOP decreased with an increasing area of detection, and only when the area was much smaller than the coherence area would the DOP approach unity. A numerical simulation explained the experimental observation. These results are important for the understanding of polarization phenomena in turbid media such as biological tissue.

Item Type:Article
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Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2002 Society of Photo-Optical Instrumentation Engineers. Paper TP-01 received Apr. 29, 2001; revised manuscript received Mar. 20, 2002; accepted for publication Mar. 29, 2002. We thank S. Jiao for experimental assistance. This project was sponsored in part by National Institutes of Health Grant No. R01 CA71980; National Science Foundation Grant No. BES-9734491; and Texas Higher Education Coordinating Board Grant No. 000512-0123-1999.
Funding AgencyGrant Number
NIHR01 CA71980
Texas Higher Education Coordinating Board000512-0123-1999
Subject Keywords:degree of polarization; laser speckle; turbid media; tissue optics
Issue or Number:3
Record Number:CaltechAUTHORS:20170201-105428719
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Official Citation:Li J, Yao G, Wang LV; Degree of polarization in laser speckles from turbid media: implications in tissue optics. J. Biomed. Opt. 0001;7(3):307-312
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73930
Deposited By: Tony Diaz
Deposited On:01 Feb 2017 19:02
Last Modified:11 Nov 2021 05:23

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