20 September 2002 Digital method for aberration-compensation in electron holography
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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.
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Cheng Liu, Cheng Liu, Zhigang Liu, Zhigang Liu, Feng Bo, Feng Bo, Yong Wang, Yong Wang, Jianqiang Zhu, Jianqiang Zhu, } "Digital method for aberration-compensation in electron holography", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.471880; https://doi.org/10.1117/12.471880
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