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Optical Engineering

Digital holographic aberration compensation in electron holography
Author(s): Cheng Liu; Zhigang Liu; Feng Bo; Yong Wang; Jianqiang Zhu
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Paper Abstract

This paper proposes a new digital method to compensate for the aberration of an electron objective lens in electron holography. In this method, the object wavefront in the exit pupil plane is numerically reconstructed from a digitized electron hologram, and is corrected by multiplying it with the conjugated phase-error function. Then, an aberration-free image can be obtained by calculating the Fresnel integral of this corrected wavefront. In comparison with traditional methods, this method is much more convenient and accurate. Some verifying experiments are also presented in this paper.

Paper Details

Date Published: 1 March 2003
PDF: 5 pages
Opt. Eng. 42(3) doi: 10.1117/1.1544474
Published in: Optical Engineering Volume 42, Issue 3
Show Author Affiliations
Cheng Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Zhigang Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Feng Bo, Shanghai Inst. of Optics and Fine Mechanics (China)
Yong Wang, Shanghai Inst. of Optics and Fine Mechanics (China)
Jianqiang Zhu, Shanghai Institute of Optics and Fine Mechanics (China)


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