Electron interferometry with nanogratings

Alexander D. Cronin, Ben McMorran

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

We present an electron interferometer based on near-field diffraction from two nanostructure gratings. Lau fringes are observed with an imaging detector, and revivals in the fringe visibility occur as the separation between gratings is increased from 0.2 to 2.7 mm. The oscillations in visibility depend predictably on the wavelength of incident electrons. This verifies that 5 keV electrons diffracted by nanostructures remain coherent after propagating farther than the Talbot length, and hence proves that a Talbot-Lau interferometer for electrons can be built with nanostructure gratings. Distorted fringes due to a phase object are used to demonstrate an application for this type of electron interferometer.

Original languageEnglish (US)
Article number061602
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume74
Issue number6
DOIs
StatePublished - 2006

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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