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Optical Engineering

Phase retrieval in lens-based Fresnel wave propagation model
Author(s): Hong Cheng; Sui Wei; Wei Zhang; Cheng Zhang
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Paper Abstract

The goal of phase retrieval is to extract the phase of an optical wave field from intensity measurements. The transport-of-intensity equation (TIE)-based method is a popular deterministic solution and has been applied in various fields such as optical microscopy, electron microscopy, and x-ray imaging. For macro-imaging, a camera is often used to capture the images, and thus the phase modulation of the lens should be considered. A new formulation is proposed to extend TIE for phase retrieval in a lens-based wave propagation model. To obtain the defocus step, a data-collection-reading device is designed by equipping a camera with a micrometer caliper. Simulation and real experiments are conducted to test the proposed method.

Paper Details

Date Published: 5 July 2013
PDF: 8 pages
Opt. Eng. 52(7) 074102 doi: 10.1117/1.OE.52.7.074102
Published in: Optical Engineering Volume 52, Issue 7
Show Author Affiliations
Hong Cheng, Anhui Univ. (China)
Sui Wei, Anhui Univ. (China)
Wei Zhang, Shandong Univ. (China)
Cheng Zhang, Anhui Univ. (China)


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