Optimized illumination for high-throughput ptychography

Yudong Yao; Junjing Deng; Jeffrey A. Klug; Yi Jiang; Michael Wojcik; Youssef Nashed; Curt Preissner; Christian Roehrig; Zhonghou Cai; Oliver Cossairt; Stefan Vogt; Barry Lai

doi:10.1117/12.2530527

9 September 2019 Optimized illumination for high-throughput ptychography

Yudong Yao, Junjing Deng, Jeffrey A. Klug, Yi Jiang, Michael Wojcik, Youssef Nashed, Curt Preissner, Christian Roehrig, Zhonghou Cai, Oliver Cossairt, Stefan Vogt, Barry Lai

Author Affiliations +

Proceedings Volume 11112, X-Ray Nanoimaging: Instruments and Methods IV; 111120G (2019) https://doi.org/10.1117/12.2530527
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

As a scanning version of coherent diffraction imaging (CDI), X-ray ptychography has become a popular and very successful method for high-resolution quantitative imaging of extended specimens. The requirements of mostly coherent illumination and the scanning mechanism limit the throughput of ptychographic imaging. In this paper, we will introduce the methods we use at the Advanced Photon Source (APS) to achieve highthroughput ptychography by optimizing the parameters of the illumination beam. One work we have done is increasing the illumination flux by using a double-multilayer monochromator (DMM) optics with about 0.8% bandwidth. Compared with our double-crystal monochromator (DCM) optics with 0.01% bandwidth, this DMM optics provides around 20 times more flux. A multi-wavelength reconstruction method has been implemented to deal with the consequential degraded temporal coherence from such an illumination to ensure high-quality reconstruction. In the other work, we adopt a novel use of at-top focusing optics to generate a at-top beam with the diameter of about 1.5 μm on the focal plane. The better uniformity of the probe and the large beam size allow one to significantly increase the step size in ptychography scans and thereby the imaging efficiency.

Citation Download Citation

Yudong Yao, Junjing Deng, Jeffrey A. Klug, Yi Jiang, Michael Wojcik, Youssef Nashed, Curt Preissner, Christian Roehrig, Zhonghou Cai, Oliver Cossairt, Stefan Vogt, and Barry Lai "Optimized illumination for high-throughput ptychography", Proc. SPIE 11112, X-Ray Nanoimaging: Instruments and Methods IV, 111120G (9 September 2019); https://doi.org/10.1117/12.2530527

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Monochromators

Capillaries

Coherence imaging

Data acquisition

Reconstruction algorithms

X-ray diffraction

X-ray imaging

Show All Keywords

Keywords/Phrases

Search In:

Publication Years