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Title: Influence of finite spatial coherence on ptychographic reconstruction

X-ray ptychography is an ultrahigh-resolution scanning coherent diffractive imaging technique, allowing quantitative measurements of extended samples and a simultaneous reconstruction of the illuminating wavefront. Recent development of the mixed-state reconstruction algorithm has triggered a certain interest in utilizing partially coherent X-ray sources for ptychography. Here, we study how finite spatial coherence influences the reconstructed image of a test structure. Our work shows that use of a highly coherent illumination provides images with better spatial resolution and fewer artefacts than the approach with partial coherence.
Authors:
; ; ; ;  [1] ; ; ;  [2]
  1. DESY Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg (Germany)
  2. Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)
Publication Date:
OSTI Identifier:
22483137
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; ILLUMINANCE; IMAGES; MIXED STATE; MIXED STATES; SPATIAL RESOLUTION; X RADIATION; X-RAY SOURCES