Open AccessStructured illumination behind turbid media
Author(s) -
Archana Malavalli,
Mirco Ackermann,
Christof M. Aegerter
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.023018
Subject(s) - optics , wavefront , focus (optics) , physics , deconvolution , scattering , light scattering , optical path , blind deconvolution , interferometry , ray
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.