Electron-Holographic Interferometry

  • Akira Tonomura
Part of the Springer Series in Optical Sciences book series (SSOS, volume 70)

Abstract

When holography is employed, the phase distribution of an electron beam transmitted through or reflected from a sample can be displayed as an interference micrograph. Although an interference micrograph can also be obtained without recourse to holography if we use an electron microscope equipped with an electron biprism (Sect.3.2), electron holography allows contour maps to be observed and the phase to be measured with a precision as high as 27π/100. The development of electron-holographic interferometry allows us to see objects that were not visible when using conventional electron microscopes in which only the intensity of an electron beam is observed.

Keywords

Vortex Nickel Cobalt Hexagonal Tungsten 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Akira Tonomura
    • 1
  1. 1.Advanced Research Laboratory, Hitachi, Ltd. and Tonomura Electron Wavefront Project, Exploratory Research for Advanced TechnologyResearch Development Corporation of JapanHatoyama, SaitamaJapan

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