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arXiv · 2308.10674

Live Iterative Ptychography

Dieter Weber·Simeon Ehrig·Andreas Schropp·Alexander Clausen·Silvio Achilles·Nico Hoffmann·Michael Bussmann·Rafal Dunin-Borkowski·Christian G. Schroer
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Abstract

We demonstrate live-updating ptychographic reconstruction with ePIE, an iterative ptychography method, during ongoing data acquisition. The reconstruction starts with a small subset of the total data, and as the acquisition proceeds the data used for reconstruction is extended. This creates a live-updating view of object and illumination that allows monitoring the ongoing experiment and adjusting parameters with quick turn-around. This is particularly advantageous for long-running acquisitions. We show that such a gradual reconstruction yields interpretable results already with a small subset of the data. We show simulated live processing with various scan patterns, parallelized reconstruction, and real-world live processing at the hard X-ray ptychographic nanoanalytical microscope PtyNAMi at the PETRA III beamline.

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Dieter Weber, Simeon Ehrig, Andreas Schropp, Alexander Clausen, Silvio Achilles, Nico Hoffmann, Michael Bussmann, Rafal Dunin-Borkowski, Christian G. Schroer. 2023-08-21. Live Iterative Ptychography. https://doi.org/10.1093/mam%2Fozae004

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