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Proceedings Paper

Digital method for 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 electron-objective lens in electron holography. In this method, the object wavefront in the exit pupil plane is numerically reconstructed from digitized electron hologram, and is corrected by multiplying it with the conjugate aberration function of the electron-objective lens. Then, 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.

Paper Details

Date Published: 20 September 2002
PDF: 5 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.471880
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 Institute of Optics and Fine Mechanics (China)
Yong Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Jianqiang Zhu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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