Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Effects of missing low-frequency information on ptychographic and plane-wave coherent diffraction imaging

Not Accessible

Your library or personal account may give you access

Abstract

In coherent diffractive imaging (CDI) experiments, a beamstop (BS) is commonly used to extend the exposure time of the charge-coupled detector and obtain high-angle diffraction signals. However, the negative effect of a large BS is also evident, causing low-frequency signals to be missed and making CDI reconstruction unstable or causing it to fail. We performed a systematic simulation investigation of the effects of BSs on the quality of reconstructed images from both plane-wave and ptychographic CDI (PCDI). For the same imaging quality, we found that ptychography can tolerate BSs that are at least 20 times larger than those for plane-wave CDI. For PCDI, a larger overlap ratio and a smaller illumination spot can significantly increase the imaging robustness to the negative influence of BSs. Our results provide guidelines for the usage of BSs in CDI, especially in PCDI experiments, which can help to further improve the spatial resolution of PCDI.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Spatially correlated coherent diffractive imaging method

Xulei Tao, Zijian Xu, Haigang Liu, Chunpeng Wang, Zhenjiang Xing, Yong Wang, and Renzhong Tai
Appl. Opt. 57(22) 6527-6533 (2018)

Ptychographic coherent x-ray diffractive imaging in the water window

K. Giewekemeyer, M. Beckers, T. Gorniak, M. Grunze, T. Salditt, and A. Rosenhahn
Opt. Express 19(2) 1037-1050 (2011)

Translation position determination in ptychographic coherent diffraction imaging

Fucai Zhang, Isaac Peterson, Joan Vila-Comamala, Ana Diaz, Felisa Berenguer, Richard Bean, Bo Chen, Andreas Menzel, Ian K. Robinson, and John M. Rodenburg
Opt. Express 21(11) 13592-13606 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved