Influence of finite spatial coherence on ptychographic reconstruction

Journal Article · Mon Jul 06 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4926328· OSTI ID:22483137

Stuebe, N.; Meyer, J.; Warmer, M.; Meents, A. ^[1]; Mohacsi, I.; Vartiainen, I.; David, C. ^[2]

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1. DESY Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg (Germany)
2. Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)

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.

• OSTI ID: 22483137
• Journal Information: Applied Physics Letters, Vol. 107, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
ILLUMINANCE
IMAGES
MIXED STATE
MIXED STATES
SPATIAL RESOLUTION
X RADIATION
X-RAY SOURCES