Journal Article

PUBDB-2021-04333

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Multi-beam X-ray ptychography using coded probes for rapid non-destructive high resolution imaging of extended samples

Lyubomirskiy, M. (Corresponding author)XFEL.EU*DESY* ; Wittwer, F.XFEL.EU* ; Kahnt, M.Extern* ; Koch, F.Extern* ; Kubec, A.Extern* ; Falch, K. V.DESY* ; Garrevoet, J.DESY* ; Seyrich, M.Extern*XFEL.EU*DESY* ; David, C.Extern* ; Schroer, C.XFEL.EU*DESY*

2022
Macmillan Publishers Limited, part of Springer Nature [London]

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Please use a persistent id in citations: doi:10.1038/s41598-022-09466-5  doi:10.3204/PUBDB-2021-04333

Abstract: Imaging large areas of a sample non-destructively and with high resolution is of great interest for both science and industry. For scanning coherent X-ray diffraction microscopy, i. e., ptychography, the achievable scan area at a given spatial resolution is limited by the coherent photon flux of modern X-ray sources. Multibeam X-ray ptychography can improve the scanning speed by scanning the sample with several parallel mutually incoherent beams, e. g., generated by illuminating multiple focusing optics in parallel by a partially coherent beam. The main difficulty with this scheme is the robust separation of the superimposed signals from the different beams, especially when the beams and the illuminated sample areas are quite similar. We overcome this difficulty by encoding each of the probing beams with its own X-ray phase plate. This helps the algorithm to robustly reconstruct the multibeam data. We compare the coded multibeam scans to uncoded multibeam and single beam scans, demonstrating the enhanced performance on a microchip sample with regular and repeating structures.

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Contributing Institute(s):

1. FS-PETRA (FS-PETRA)
2. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20190022 (I-20190022) (I-20190022)
4. SWEDEN-DESY - SWEDEN-DESY Collaboration (2020_Join2-SWEDEN-DESY) (2020_Join2-SWEDEN-DESY)
5. DFG project 426888090 - SFB 1441: Verfolgung der aktiven Zentren in heterogenen Katalysatoren für die Emissionskontrolle (TrackAct) (426888090) (426888090)

Experiment(s):

1. PETRA Beamline P06 (PETRA III)

Appears in the scientific report 2022

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