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1 Janelia Publications

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    Cui Lab
    02/14/11 | A high speed wavefront determination method based on spatial frequency modulations for focusing light through random scattering media.
    Cui M
    Optics Express. 2011 Feb 14;19(4):2989-95. doi: 10.1364/OE.19.002989

    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,  three orders of magnitude faster than the previous report.

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