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Emerging Beam Resonances in Atom Diffraction from a Reflection Grating

Bum Suk Zhao (조범석), Gerard Meijer, and Wieland Schöllkopf
Phys. Rev. Lett. 104, 240404 – Published 16 June 2010

Abstract

We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anomalies and threshold resonances in photon and electron diffraction, respectively, in an atom-optical diffraction experiment. Diffraction of He atom beams reflected from a blazed ruled grating at grazing incidence has been investigated. The total reflectivity of the grating as well as the intensities of the diffracted beams reveal anomalies at the Rayleigh angles of incidence, i.e., when another diffracted beam emerges parallel to the grating surface. The observed anomalies are discussed in terms of the classical wave-optical model of Rayleigh and Fano.

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  • Received 18 February 2010

DOI:https://doi.org/10.1103/PhysRevLett.104.240404

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Authors & Affiliations

Bum Suk Zhao (조범석)*, Gerard Meijer, and Wieland Schöllkopf

  • Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

  • *zhao@fhi-berlin.mpg.de
  • wschoell@fhi-berlin.mpg.de

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Issue

Vol. 104, Iss. 24 — 18 June 2010

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