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Broadband X-ray ptychography using multi-wavelength algorithm

Ptychography is a rapidly developing scanning microscopy which is able to view the internal structures of samples at a high resolution beyond the illumination size. The achieved spatial resolution is theoretically dose-limited. A broadband source can provide much higher flux compared with a monochro...

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Autores principales: Yao, Yudong, Jiang, Yi, Klug, Jeffrey, Nashed, Youssef, Roehrig, Christian, Preissner, Curt, Marin, Fabricio, Wojcik, Michael, Cossairt, Oliver, Cai, Zhonghou, Vogt, Stefan, Lai, Barry, Deng, Junjing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7842233/
https://www.ncbi.nlm.nih.gov/pubmed/33399582
http://dx.doi.org/10.1107/S1600577520014708
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author Yao, Yudong
Jiang, Yi
Klug, Jeffrey
Nashed, Youssef
Roehrig, Christian
Preissner, Curt
Marin, Fabricio
Wojcik, Michael
Cossairt, Oliver
Cai, Zhonghou
Vogt, Stefan
Lai, Barry
Deng, Junjing
author_facet Yao, Yudong
Jiang, Yi
Klug, Jeffrey
Nashed, Youssef
Roehrig, Christian
Preissner, Curt
Marin, Fabricio
Wojcik, Michael
Cossairt, Oliver
Cai, Zhonghou
Vogt, Stefan
Lai, Barry
Deng, Junjing
author_sort Yao, Yudong
collection PubMed
description Ptychography is a rapidly developing scanning microscopy which is able to view the internal structures of samples at a high resolution beyond the illumination size. The achieved spatial resolution is theoretically dose-limited. A broadband source can provide much higher flux compared with a monochromatic source; however, it conflicts with the necessary coherence requirements of this coherent diffraction imaging technique. In this paper, a multi-wavelength reconstruction algorithm has been developed to deal with the broad bandwidth in ptychography. Compared with the latest development of mixed-state reconstruction approach, this multi-wavelength approach is more accurate in the physical model, and also considers the spot size variation as a function of energy due to the chromatic focusing optics. Therefore, this method has been proved in both simulation and experiment to significantly improve the reconstruction when the source bandwidth, illumination size and scan step size increase. It is worth mentioning that the accurate and detailed information of the energy spectrum for the incident beam is not required in advance for the proposed method. Further, we combine multi-wavelength and mixed-state approaches to jointly solve temporal and spatial partial coherence in ptychography so that it can handle various disadvantageous experimental effects. The significant relaxation in coherence requirements by our approaches allows the use of high-flux broadband X-ray sources for high-efficient and high-resolution ptychographic imaging.
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spelling pubmed-78422332021-02-05 Broadband X-ray ptychography using multi-wavelength algorithm Yao, Yudong Jiang, Yi Klug, Jeffrey Nashed, Youssef Roehrig, Christian Preissner, Curt Marin, Fabricio Wojcik, Michael Cossairt, Oliver Cai, Zhonghou Vogt, Stefan Lai, Barry Deng, Junjing J Synchrotron Radiat Research Papers Ptychography is a rapidly developing scanning microscopy which is able to view the internal structures of samples at a high resolution beyond the illumination size. The achieved spatial resolution is theoretically dose-limited. A broadband source can provide much higher flux compared with a monochromatic source; however, it conflicts with the necessary coherence requirements of this coherent diffraction imaging technique. In this paper, a multi-wavelength reconstruction algorithm has been developed to deal with the broad bandwidth in ptychography. Compared with the latest development of mixed-state reconstruction approach, this multi-wavelength approach is more accurate in the physical model, and also considers the spot size variation as a function of energy due to the chromatic focusing optics. Therefore, this method has been proved in both simulation and experiment to significantly improve the reconstruction when the source bandwidth, illumination size and scan step size increase. It is worth mentioning that the accurate and detailed information of the energy spectrum for the incident beam is not required in advance for the proposed method. Further, we combine multi-wavelength and mixed-state approaches to jointly solve temporal and spatial partial coherence in ptychography so that it can handle various disadvantageous experimental effects. The significant relaxation in coherence requirements by our approaches allows the use of high-flux broadband X-ray sources for high-efficient and high-resolution ptychographic imaging. International Union of Crystallography 2021-01-01 /pmc/articles/PMC7842233/ /pubmed/33399582 http://dx.doi.org/10.1107/S1600577520014708 Text en © Yudong Yao et al. 2021 http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/4.0/
spellingShingle Research Papers
Yao, Yudong
Jiang, Yi
Klug, Jeffrey
Nashed, Youssef
Roehrig, Christian
Preissner, Curt
Marin, Fabricio
Wojcik, Michael
Cossairt, Oliver
Cai, Zhonghou
Vogt, Stefan
Lai, Barry
Deng, Junjing
Broadband X-ray ptychography using multi-wavelength algorithm
title Broadband X-ray ptychography using multi-wavelength algorithm
title_full Broadband X-ray ptychography using multi-wavelength algorithm
title_fullStr Broadband X-ray ptychography using multi-wavelength algorithm
title_full_unstemmed Broadband X-ray ptychography using multi-wavelength algorithm
title_short Broadband X-ray ptychography using multi-wavelength algorithm
title_sort broadband x-ray ptychography using multi-wavelength algorithm
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7842233/
https://www.ncbi.nlm.nih.gov/pubmed/33399582
http://dx.doi.org/10.1107/S1600577520014708
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