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Dielectric laser acceleration of nonrelativistic electrons at a single fused silica grating structure: Experimental part

John Breuer, Roswitha Graf, Alexander Apolonski, and Peter Hommelhoff
Phys. Rev. ST Accel. Beams 17, 021301 – Published 6 February 2014

Abstract

Recently, our group has demonstrated dielectric laser acceleration of nonrelativistic electrons at a scalable fused silica grating [J. Breuer and P. Hommelhoff, Phys. Rev. Lett. 111, 134803 (2013)]. This represents a demonstration of the inverse Smith-Purcell effect in the optical regime. The third spatial harmonic of the grating, which is excited by Titanium:sapphire laser pulses, synchronously accelerates 28 keV electrons derived from an electron microscope column. We observe a maximum acceleration gradient of 25MeV/m. Here we present the experimental setup in detail. We describe grating-related issues such as surface charging and alignment as well as damage threshold measurements. A detailed explanation of the detection scheme is given. Furthermore, extensive numerical simulations are discussed, which agree well with the experimental results.

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  • Received 23 October 2013

DOI:https://doi.org/10.1103/PhysRevSTAB.17.021301

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.

Published by the American Physical Society

Authors & Affiliations

John Breuer*, Roswitha Graf, and Alexander Apolonski

  • Max Planck Institute of Quantum Optics, Hans-Kopfermann-Straße 1, 85748 Garching, Germany

Peter Hommelhoff

  • Department of Physics, Friedrich Alexander University Erlangen Nuremberg, Staudtstr. 1, 91058 Erlangen, Germany and Max Planck Institute of Quantum Optics, Hans-Kopfermann-Straße 1, 85748 Garching, Germany

  • *Present address: Integrated Circuit Testing GmbH, Ammerthalstraße 20, 85551 Heimstetten, Germany.
  • Present address: AMPHOS GmbH, Kaiserstraße 100, 52134 Herzogenrath, Germany.
  • Also at: Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany.
  • peter.hommelhoff@fau.de

See Also

Laser-Based Acceleration of Nonrelativistic Electrons at a Dielectric Structure

John Breuer and Peter Hommelhoff
Phys. Rev. Lett. 111, 134803 (2013)

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Vol. 17, Iss. 2 — February 2014

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