Journal
OPTICS LETTERS
Volume 36, Issue 6, Pages 870-872Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.36.000870
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- Howard Hughes Medical Institute
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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 similar to 270. The accuracy and repeatability of the system were tested through experiments. (C) 2011 Optical Society of America
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