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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Spectral shaping of attosecond pulses using two-colour laser fields

Author

  • Erik Mansten
  • Marcus Dahlström
  • Per Johnsson
  • Marko Swoboda
  • Anne L'Huillier
  • Johan Mauritsson

Summary, in English

We use a strong two-colour laser field composed of the fundamental (800 nm) and the second harmonic (400 nm) of an infrared (IR) laser field to generate attosecond pulses with controlled spectral and temporal properties. With a second-harmonic intensity equal to 15% of the IR intensity the second-harmonic field is strong enough to significantly alter and control the electron trajectories in the generation process. This enables us to tune the central photon energy of the attosecond pulses by changing the phase difference between the IR and the second-harmonic fields. In the time domain the radiation is emitted as a sequence of pulses separated by a full IR cycle. We also perform calculations showing that the effect of even stronger second-harmonic fields leads to an extended tunable range under conditions that are experimentally feasible.

Department/s

  • Atomic Physics

Publishing year

2008

Language

English

Publication/Series

New Journal of Physics

Volume

10

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1367-2630