title: Double-resolution electron holography with simple Fourier transform of fringe-shifted holograms.
abstract: 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.
authors.affiliation: Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY 11973, USA. Electronic address: volkov@bnl.gov.
authors.forename: V V
authors.initials: VV
authors.lastname: Volkov
authors.forename: M G
authors.initials: MG
authors.lastname: Han
authors.forename: Y
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D000465:Algorithms; D004583:Electrons; D005583:Fourier Analysis; D006696:Holography / Q000379:methods*; D007089:Image Enhancement / Q000379:methods; D012996:Solutions / Q000737:chemistry
chemical_list: D012996:Solutions
keywords: Analytical reconstruction; Error reduction; High-resolution electron holography; Image processing; Interferometry