Characterization of the angular memory effect of scattered light in biological tissues.
Schott, S; Bertolotti, J; Léger, JF; et al.Bourdieu, L; Gigan, S
Date: 18 May 2015
Journal
Optics Express
Publisher
Optical Society of America
Publisher DOI
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Abstract
High resolution optical microscopy is essential in neuroscience but suffers from scattering in biological tissues and therefore grants access to superficial brain layers only. Recently developed techniques use scattered photons for imaging by exploiting angular correlations in transmitted light and could potentially increase imaging ...
High resolution optical microscopy is essential in neuroscience but suffers from scattering in biological tissues and therefore grants access to superficial brain layers only. Recently developed techniques use scattered photons for imaging by exploiting angular correlations in transmitted light and could potentially increase imaging depths. But those correlations ('angular memory effect') are of a very short range and should theoretically be only present behind and not inside scattering media. From measurements on neural tissues and complementary simulations, we find that strong forward scattering in biological tissues can enhance the memory effect range and thus the possible field-of-view by more than an order of magnitude compared to isotropic scattering for ∼1 mm thick tissue layers.
Physics and Astronomy
Faculty of Environment, Science and Economy
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