Reconstruction of wave front and object for inline holography from a set of detection planes
2014-05-19 | journal article; research paper. A publication with affiliation to the University of Göttingen.
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Reconstruction of wave front and object for inline holography from a set of detection planes
Hagemann, J. ; Robisch, A.-L. ; Luke, D. R. ; Homann, C.; Hohage, T. ; Cloetens, P. & Suhonen, H. et al. (2014)
Optics Express, 22(10) pp. 11552-11569. DOI: https://doi.org/10.1364/OE.22.011552
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- Authors
- Hagemann, Johannes ; Robisch, Anna-Lena ; Luke, D. R. ; Homann, C.; Hohage, Thorsten ; Cloetens, Peter; Suhonen, H.; Salditt, Tim
- Abstract
- We illustrate the errors inherent in the conventional empty beam correction of full field X-ray propagation imaging, i.e. the division of intensities in the detection plane measured with an object in the beam by the intensity pattern measured without the object, i.e. the empty beam intensity pattern. The error of this conventional approximation is controlled by the ratio of the source size to the smallest feature in the object, as is shown by numerical simulation. In a second step, we investigate how to overcome the flawed empty beam division by simultaneous reconstruction of the probing wavefront (probe) and of the object, based on measurements in several detection planes (multi-projection approach). The algorithmic scheme is demonstrated numerically and experimentally, using the defocus wavefront of the hard X-ray nanoprobe setup at the European Synchrotron Radiation Facility (ESRF). (C) 2014 Optical Society of America
- Issue Date
- 19-May-2014
- Journal
- Optics Express
- Organization
- Institut für Numerische und Angewandte Mathematik ; Fakultät für Physik ; Fakultät für Mathematik und Informatik ; Institut für Röntgenphysik
- Working Group
- RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)
RG Hohage (Inverse Problems)
RG Luke (Continuous Optimization, Variational Analysis and Inverse Problems) - ISSN
- 1094-4087
- Language
- English
- Subject(s)
- x-ray imaging