Partial coherence and the influence of overlap and curvature in ptychography

Guido Cadenazzi, Bo Chen, Timur Gureyev, H. M. Quiney, K. A. Nugent, B. Abbey

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In this paper, we use optical coherence theory to define the limit for the spatial coherence length with respect to the degree of overlap between adjacent probe positions in ptychography. The influence of the degree of curvature of the probe in relation to partial coherence in the Fresnel geometry for a fixed overlap is also considered. This work has implications for the application of ptychographic coherent imaging using partially coherent sources. We validate these results through a simulation study of coherence versus overlap parameter and curvature.

Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationNanophotonics Australasia 2017
Number of pages9
ISBN (Electronic)9781510613935
Publication statusPublished - 2 Jan 2018
Externally publishedYes
EventNanophotonics Australasia, 2017 - RMIT Univ., Buildings 14 and 80, Melbourne, Australia
Duration: 10 Dec 201713 Dec 2017


ConferenceNanophotonics Australasia, 2017
OtherAttend SPIE NanoPhotonics Australasia 2017, a multidisciplinary forum with a focus on research that has enabled promising new nanophotonic technologies and applications across many fields, including photonics, energy, security, information, and medicine.
Internet address


  • Coherent Diffractive Imaging
  • Optical Physics
  • Partial Coherence
  • Ptychography

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