TY  - JOUR
AU  - Meyer, Paul
AU  - Lohse, Leon M.
AU  - Lucht, Jens
AU  - Tonin, Yuri R.
AU  - Osterhoff, Markus
AU  - Salditt, Tim
TI  - On super-resolution holography: effective geometry, sampling, and constraints
JO  - Optics express
VL  - 33
IS  - 26
SN  - 1094-4087
CY  - Washington, DC
PB  - Optica
M1  - PUBDB-2026-00569
SP  - 53966
PY  - 2025
N1  - funded by ErUM-Pro project (BMFTR) 05K25MG2 Acronym HoToP4 (Salditt)   Waiting for fulltext 
AB  - 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.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1364/OE.579705
UR  - https://bib-pubdb1.desy.de/record/645064
ER  -