Claus, D. and Rodenburg, J.M. orcid.org/0000-0002-1059-8179 (2018) Diffraction-limited superresolution ptychography in the Rayleigh-Sommerfeld regime. Journal of the Optical Society of America A, 36 (2). A12-A19. ISSN 1084-7529
Abstract
Superresolution in lensless near field ptychography is demonstrated via the application of a strongly curved illumination function. The reconstruction is performed using the Rayleigh-Sommerfeld diffraction integral, which is implemented via a pixel-size adjustable angular spectrum method. In this manner the reconstructed object details, which are not only smaller than the pixel-size of the sensor but even smaller than the smallest resolvable object detail defined by the effective NA of the 2D sensor, is enabled. The expected resolution, as predicted by the angles of scatter present in the optical configuration, is experimentally validated using a US air force resolution test target. The approach discussed here is not only limited to ptychography, but can be extended to other coherent diffractive imaging modalities such as object scanning holography or optical diffraction tomography, so as to enable high resolution near field quantitative phase imaging.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Optical Society of America. This is an author produced version of a paper subsequently published in Journal of the Optical Society of America A. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/E034055/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Jan 2019 11:27 |
Last Modified: | 28 Nov 2019 01:39 |
Published Version: | https://doi.org/10.1364/JOSAA.36.000A12 |
Status: | Published |
Publisher: | Optical Society of America |
Refereed: | Yes |
Identification Number: | 10.1364/JOSAA.36.000A12 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140607 |