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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Intensity dependence of laser-assisted attosecond photoionization spectra

Author

  • Marko Swoboda
  • Marcus Dahlström
  • Thierry Ruchon
  • Per Johnsson
  • Johan Mauritsson
  • Anne L'Huillier
  • K. J. Schafer

Summary, in English

We study experimentally the influence of the intensity of the infrared (IR) probe field on attosecond pulse train (APT) phase measurements performed with the RABITT method (Reconstruction of Attosecond Beating by Interference in Two-Photon Transitions). We find that if a strong IR field is applied, the attosecond pulses will appear to have lower-than-actual chirp rates. We also observe the onset of the streaking regime in the breakdown of the weak-field RABITT conditions. We perform a Fourier-analysis of harmonic and sideband continuum states and show that the mutual phase relation of the harmonics can be extracted from higher Fourier components.

Department/s

  • Atomic Physics

Publishing year

2009

Language

English

Pages

1591-1599

Publication/Series

Laser Physics

Volume

19

Issue

8

Document type

Journal article

Publisher

Interperiodica

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1054-660X