X-ray nano-holotomography reconstruction with simultaneous probe retrieval

In conventional tomographic reconstruction, the pre-processing step includes flat-field correction, where each sample projection on the detector is divided by a reference image taken without the sample. When using coherent X-rays as a probe, this approach overlooks the phase component of the illumin...

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Veröffentlicht in:Optics express Jg. 32; H. 23; S. 41905
Hauptverfasser: Nikitin, Viktor, Carlsson, Marcus, Gürsoy, Doğa, Mokso, Rajmund, Cloetens, Peter
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States Optical Society of America - OSA Publishing 04.11.2024
Optical Society of America
Schlagworte:
Atom and Molecular Physics and Optics
Atom- och molekylfysik och optik (Här ingår: Kemisk fysik, kvantoptik)
Computer and Information Sciences
Computer graphics and computer vision
Data- och informationsvetenskap (Datateknik)
Datorgrafik och datorseende
Fysik
Natural Sciences
Naturvetenskap
Physical Sciences
Physics
Subatomic Physics
Subatomär fysik
ISSN:1094-4087, 1094-4087
Online-Zugang:Volltext
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Zusammenfassung:In conventional tomographic reconstruction, the pre-processing step includes flat-field correction, where each sample projection on the detector is divided by a reference image taken without the sample. When using coherent X-rays as a probe, this approach overlooks the phase component of the illumination field (probe), leading to artifacts in phase-retrieved projection images, which are then propagated to the reconstructed 3D sample representation. The problem intensifies in nano-holotomography with focusing optics, which, due to various imperfections creates high-frequency components in the probe function. Here, we present a new iterative reconstruction scheme for holotomography, simultaneously retrieving the complex-valued probe function. Implemented on GPUs, this algorithm results in 3D reconstruction resolving twice thinner layers in a 3D ALD standard sample measured using nano-holotomography.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
AC02-06CH11357
USDOE Office of Science (SC), Basic Energy Sciences (BES)
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.537341