Scatter Ptychography
Qian Huang, Zhipeng Dong, Yuzuru Takashima, Timothy J. Schulz and, David J. Brady

TL;DR
This paper introduces a phase retrieval method for remotely observed scattered fields that significantly enhances imaging resolution beyond direct viewing, achieving approximately 32 times improvement.
Contribution
The authors demonstrate a novel scatter ptychography technique that leverages phase retrieval to improve remote imaging resolution beyond traditional limits.
Findings
Achieved approximately 32× resolution enhancement over direct imaging.
Resolution scales with wavelength, range, and aperture as λRs/As.
Method enables imaging of distant objects with unprecedented detail.
Abstract
Coherent illumination reflected by a remote target may be secondarily scattered by intermediate objects or materials. Here we show that phase retrieval on remotely observed images of such scattered fields enables imaging of the illuminated object at resolution proportional to , where is the range between the scatterer and the target and is the diameter of the observed scatter. This resolution may exceed the resolution of directly viewing the target by the factor , where is the range between the observer and the target and is the observing aperture. Here we use this technique to demonstrate resolution improvement relative to direct imaging.
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Taxonomy
TopicsAdvanced X-ray Imaging Techniques · Digital Holography and Microscopy · Crystallography and Radiation Phenomena
