Journal Article

PUBDB-2026-00569

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On super-resolution holography: effective geometry, sampling, and constraints

Meyer, P.Extern* ; Lohse, L. M.Extern* ; Lucht, J.Extern* ; Tonin, Y. R. ; Osterhoff, M.Extern*XFEL.EU* ; Salditt, T. (Corresponding author)Extern*

2025
Optica Washington, DC

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Please use a persistent id in citations: doi:10.1364/OE.579705

Abstract: X-ray holo-tomography is a powerful tool for high-resolution three-dimensional imaging, but it faces inherent limitations in resolution caused by detector constraints, numerical aperture restrictions, and the empty beam division, which is a ubiquitous step of raw data correction in conventional inline holography and (phase contrast) μCT. To address these challenges, we extend the technique of super-resolution holography (SRH), an iterative phase reconstruction scheme that achieves high resolution by leveraging a complex illumination model, compatible with low flux areas in the beam tail and far-field diffraction components. We include a realistic pixel block constraint and represent the fields with moderate upsampling in the effective parallel beam geometry. We then demonstrate the improvements gained in resolution and sampling efficiency experimentally, using X-ray waveguide illumination and a single photon counting detector. Our results highlight the benefits of combining computational development with experimental design and showcase the potential of SRH to improve resolution and contrast at holo-tomography beamlines.

Note: funded by ErUM-Pro project (BMFTR) 05K25MG2 Acronym HoToP4 (Salditt) Waiting for fulltext

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Contributing Institute(s):

1. FS DOOR-User (FS DOOR-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. 05K22MG1 - Methodische Entwicklung eines neuen Phasenkontrast-Tomographie Verfahrens mit holographischer Bildrekonstruktion (Holo-Tomographie). (BMBF-05K22MG1) (BMBF-05K22MG1)
3. FS-Proposal: II-20211052 (II-20211052) (II-20211052)

Experiment(s):

1. PETRA Beamline P10 (PETRA III)

Appears in the scientific report 2025

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