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Coherent diffractive imaging using randomly coded masks
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DOI：10.1063/1.4937122.png)
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Abstract
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We experimentally demonstrate an extension to coherent diffractive imaging that encodes additional information through the use of a series of randomly coded masks, removing the need for typical object-domain constraints while guaranteeing a unique solution to the phase retrieval problem. Phase retrieval is performed using a numerical convex relaxation routine known as PhaseCut, an iterative algorithm known for its stability and for its ability to find the global solution, which can be found efficiently and which is robust to noise. The experiment is performed using a laser diode at 532.2 nm, enabling rapid prototyping for future X-ray synchrotron and even free electron laser experiments. (C) 2015 Author(s).
Keywords:
PHASE RETRIEVAL
RAY
HOLOGRAPHY
CRYSTALLOGRAPHY
PTYCHOGRAPHY
ILLUMINATION
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