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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 9 — Oct. 3, 2011

Penetration depth of linear polarization imaging for two-layer anisotropic samples

Ran Liao, Nan Zeng, Dongzhi Li, Tianliang Yun, Yonghong He, and Hui Ma  »View Author Affiliations


Applied Optics, Vol. 50, Issue 23, pp. 4681-4687 (2011)
http://dx.doi.org/10.1364/AO.50.004681


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Abstract

Polarization techniques can suppress multiply scattering light and have been demonstrated as an effective tool to improve image quality of superficial tissues where many cancers start to develop. Learning the penetration depth behavior of different polarization imaging techniques is important for their clinical applications in diagnosis of skin abnormalities. In the present paper, we construct a two-layer sample consisting of isotropic and anisotropic media and examine quantitatively using both experiments and Monte Carlo simulations the penetration depths of three different polarization imaging methods, i.e., linear differential polarization imaging (LDPI), degree of linear polarization imaging (DOLPI), and rotating linear polarization imaging (RLPI). The results show that the contrast curves of the three techniques are distinctively different, but their characteristic depths are all of the order of the transport mean free path length of the top layer. Penetration depths of LDPI and DOLPI depend on the incident polarization angle. The characteristic depth of DOLPI, and approximately of LDPI at small g, scales with the transport mean free path length. The characteristic depth of RLPI is almost twice as big as that of DOLPI and LDPI, and increases significantly as g increases.

© 2011 Optical Society of America

OCIS Codes
(290.1350) Scattering : Backscattering
(110.0113) Imaging systems : Imaging through turbid media
(110.5405) Imaging systems : Polarimetric imaging
(290.5855) Scattering : Scattering, polarization

ToC Category:
Imaging Systems

History
Original Manuscript: January 18, 2011
Revised Manuscript: April 30, 2011
Manuscript Accepted: May 1, 2011
Published: August 8, 2011

Virtual Issues
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Ran Liao, Nan Zeng, Dongzhi Li, Tianliang Yun, Yonghong He, and Hui Ma, "Penetration depth of linear polarization imaging for two-layer anisotropic samples," Appl. Opt. 50, 4681-4687 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-50-23-4681

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