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Parallel wavefront optimization method for focusing light through random scattering media.

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Optics Letters. 2011 Mar 15;36(6):870-2. doi: 10.1364/OL.36.000870
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Parallel wavefront optimization method for focusing light through random scattering media. Cui Lab
Cui M
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Abstract

A parallel wavefront optimization method is demonstrated experimentally to focus light through random scattering media. The simultaneous modulation of multiple phase elements, each at a unique frequency, enables a parallel determination of the optimal wavefront. Compared to a pixel-by-pixel measurement, the reported parallel method uses the target signal in a highly efficient way. With 441 phase elements, a high-quality focus was formed through a glass diffuser with a peak-to-background ratio of \~{}270. The accuracy and repeatability of the system were tested through experiments.

PMID: 21403712 [PubMed - indexed for MEDLINE]

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