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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Two-photon double ionization of neon using an intense attosecond pulse train

Author

  • B. Manschwetus
  • L. Rading
  • F. Campi
  • S. Maclot
  • H. Coudert-Alteirac
  • J. Lahl
  • H. Wikmark
  • P. Rudawski
  • C. M. Heyl
  • B. Farkas
  • T. Mohamed
  • A. L'Huillier
  • P. Johnsson

Summary, in English

We present a demonstration of two-photon double ionization of neon using an intense extreme ultraviolet (XUV) attosecond pulse train (APT) in a photon energy regime where both direct and sequential mechanisms are allowed. For an APT generated through high-order harmonic generation (HHG) in argon we achieve a total pulse energy close to 1μJ, a central energy of 35 eV, and a total bandwidth of ∼30 eV. The APT is focused by broadband optics in a neon gas target to an intensity of 3×1012Wcm−2. By tuning the photon energy across the threshold for the sequential process the double ionization signal can be turned on and off, indicating that the two-photon double ionization predominantly occurs through a sequential process. The demonstrated performance opens up possibilities for future XUV-XUV pump-probe experiments with attosecond temporal resolution in a photon energy range where it is possible to unravel the dynamics behind direct versus sequential double ionization and the associated electron correlation effects.

Department/s

  • Atomic Physics
  • Photonics (M.Sc.)

Publishing year

2016-06-01

Language

English

Publication/Series

Physical Review A

Volume

93

Issue

6

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2469-9926