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Translation position determination in ptychographic coherent diffraction imaging

Zhang, F; Peterson, I; Vila-Comamala, J; Diaz, A; Berenguer, F; Bean, R; Chen, B; ... Rodenburg, JM; + view all (2013) Translation position determination in ptychographic coherent diffraction imaging. Optics Express , 21 (11) 13592 -13606. 10.1364/OE.21.013592. Green open access

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Abstract

Accurate knowledge of translation positions is essential in ptychography to achieve a good image quality and the diffraction limited resolution. We propose a method to retrieve and correct position errors during the image reconstruction iterations. Sub-pixel position accuracy after refinement is shown to be achievable within several tens of iterations. Simulation and experimental results for both optical and X-ray wavelengths are given. The method improves both the quality of the retrieved object image and relaxes the position accuracy requirement while acquiring the diffraction patterns.

Type: Article
Title: Translation position determination in ptychographic coherent diffraction imaging
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OE.21.013592
Publisher version: http://dx.doi.org/10.1364/OE.21.013592
Language: English
Additional information: Copyright © 2013 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1396782
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