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Optical Engineering

Application of diffractive optical elements for controlling the light beam in ptychography
Author(s): Yali Wang; Tuo Li; Qiankun Gao; Sanguo Zhang; Yishi Shi
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Paper Abstract

We designed two pieces of rotary diffractive optical elements (DOE) to control the incident light beam in ptychography. The incident light beam is shaped into the required complex amplitude as employed probes by using double DOEs. The high-quality probes are generated to illuminate on the different positions of the object, which leads to achieving superior ptychographical imaging by rotating DOEs. Consequently, mechanical movement of the specimen is avoided in the imaging process. The numerical experiments demonstrate the double-wheeling DOEs are effective for the ptychographical imaging. Further, the double discs containing several pairs of DOEs are designed for a larger field of view. As a result, the flexibility of ptychography may be improved by employing the rotary double DOEs.

Paper Details

Date Published: 22 May 2013
PDF: 7 pages
Opt. Eng. 52(9) 091720 doi: 10.1117/1.OE.52.9.091720
Published in: Optical Engineering Volume 52, Issue 9
Show Author Affiliations
Yali Wang, Univ. of Chinese Academy of Sciences (China)
Tuo Li, Univ. of Chinese Academy of Sciences (China)
Qiankun Gao, Univ. of Chinese Academy of Sciences (China)
Sanguo Zhang, Univ. of Chinese Academy of Sciences (China)
Yishi Shi, Univ. of Chinese Academy of Sciences (China)

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