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Structured illumination behind turbid media


Malavalli, A; Ackermann, M; Aegerter, C M (2016). Structured illumination behind turbid media. Optics Express, 24(20):23018-23026.

Abstract

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.

Abstract

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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:17 Jan 2017 14:08
Last Modified:17 Jan 2017 14:08
Publisher:Optical Society of America
ISSN:1094-4087
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1364/OE.24.023018
PubMed ID:27828367

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