Depth probing of diffuse tissues controlled with elliptically polarized light

Abstract : Polarization gating is a popular technique in biomedical optics. It is widely used to inspect the surface of the tissues (under colinear or cocircular detection) or instead to probe the volume (cross-linear detection), without information on the probed depth. Elliptical polarization is introduced to explore the possibility of probing diffuse tissues at selective depths. A thorough Monte Carlo simulation study shows complete correlation between the probed depths and the ellipticity of the polarized light, for a medium with known optical properties. Within a wide range of optical parameters, a linear relation between the backscattered intensity and the depth extension of the probed volume was found whatever the polarization used, but with a controlled extension depending on the ellipticity.
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Simon Rehn, Anne Planat-Chrétien, Michel Berger, Jean-Marc Dinten, Carole Deumié, et al.. Depth probing of diffuse tissues controlled with elliptically polarized light. Journal of Biomedical Optics, Society of Photo-optical Instrumentation Engineers, 2013, 18 (1), pp.016007. ⟨10.1117/1.JBO.18.1.016007⟩. ⟨hal-00835407⟩

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