4.4 Article

Double-resolution electron holography with simple Fourier transform of fringe-shifted holograms

Journal

ULTRAMICROSCOPY
Volume 134, Issue -, Pages 175-184

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultramic.2013.06.018

Keywords

High-resolution electron holography; Interferometry; Analytical reconstruction; Image processing; Error reduction

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Funding

  1. US DOE, Division of Materials, Office of Basic Energy Science [DE-AC02-98CH10886]

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We propose a fringe-shifting holographic method with an appropriate image wave recovery algorithm leading to exact solution of holographic equations. With this new method the complex object image wave recovered from holograms appears to have much less traditional artifacts caused by the autocorrelation band present practically in all Fourier transformed holograms. The new analytical solutions make possible a double-resolution electron holography free from autocorrelation band artifacts and thus push the limits for phase resolution. The new image wave recovery algorithm uses a popular Fourier solution of the side band-pass filter technique, while the fringe-shifting holographic method is simple to implement in practice. Published by Elsevier B.V.

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