Structured illumination behind turbid media

In turbid media, light gets multiply scattered to an extent that all the information of its propagation is scrambled over a characteristic distance called the transport mean free path. Controlling light propagation through such media is therefore challenging. By using a feedback signal, the input wa...

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Bibliographic Details
Published in:Optics express 2016-10, Vol.24 (20), p.23018-23026
Main Authors: Malavalli, A, Ackermann, M, Aegerter, C M
Format: Article
Language:English
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Summary:In turbid media, light gets multiply scattered to an extent that all the information of its propagation is scrambled over a characteristic distance called the transport mean free path. Controlling light propagation through such media is therefore challenging. By using a feedback signal, the input wavefront of light can be shaped such that light gets focused through or even inside a scattering medium [Vellekoop et al., Opt. Express36, 67(2008)]. In this article, we show that such an interferometric focus can be transformed into an array of multiple focal spots with a desired structure. These focal spots can serve as a structured illumination source to image the interior of thick scattering tissues as in deconvolution imaging or in the optical micromanipulation of microscopic targets.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.023018