Journal
OPTICS EXPRESS
Volume 19, Issue 4, Pages 2989-2995Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.002989
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Funding
- Howard Hughes Medical Institute
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A large number of degrees of freedom are required to produce a high quality focus through random scattering media. Previous demonstrations based on spatial phase modulations suffer from either a slow speed or a small number of degrees of freedom. In this work, a high speed wavefront determination technique based on spatial frequency domain wavefront modulations is proposed and experimentally demonstrated, which is capable of providing both a high operation speed and a large number of degrees of freedom. The technique was employed to focus light through a strongly scattering medium and the entire wavefront was determined in 400 milliseconds, similar to three orders of magnitude faster than the previous report. (C) 2011 Optical Society of America
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