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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Phase Measurement of Resonant Two-Photon Ionization in Helium

Author

  • Marko Swoboda
  • Thomas Fordell
  • Kathrin Klünder
  • Marcus Dahlström
  • Miguel Miranda
  • C. Buth
  • K. J. Schafer
  • Johan Mauritsson
  • Anne L'Huillier
  • Mathieu Gisselbrecht

Summary, in English

We study resonant two-color two-photon ionization of helium via the 1s3p P-1(1) state. The first color is the 15th harmonic of a tunable Ti:sapphire laser, while the second color is the fundamental laser radiation. Our method uses phase-locked high-order harmonics to determine the phase of the two-photon process by interferometry. The measurement of the two-photon ionization phase variation as a function of detuning from the resonance and intensity of the dressing field allows us to determine the intensity dependence of the transition energy.

Department/s

  • Atomic Physics
  • Synchrotron Radiation Research

Publishing year

2010

Language

English

Publication/Series

Physical Review Letters

Volume

104

Issue

10

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114