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Focusing through dynamic scattering media
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DOI：10.1364/OE.20.015086.png)
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Abstract
En 中文
We demonstrate steady-state focusing of coherent light through dynamic scattering media. The phase of an incident beam is controlled both spatially and temporally using a reflective, 1020-segment MEMS spatial light modulator, using a coordinate descent optimization technique. We achieve focal intensity enhancement of between 5 and 400 for dynamic media with speckle decorrelation time constants ranging from 0.4 seconds to 20 seconds. We show that this optimization approach combined with a fast spatial light modulator enables focusing through dynamic media. The capacity to enhance focal intensity despite transmission through dynamic scattering media could enable advancement in biological microscopy and imaging through turbid environments. (c) 2012 Optical Society of America
Keywords:
DEFORMABLE MIRROR
TURBID MEDIA
LIGHT
MICROSCOPY
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