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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Phase of the Atomic Polarization In High-order Harmonic-generation

Author

  • M Lewenstein
  • P Salieres
  • Anne L'Huillier

Summary, in English

A recently formulated theory of high-order harmonic generation by low-frequency laser fields [Anne L'Huillier et al., Phys. Rev. A 48, R3433 (1993)] allows us to study the phase of the induced atomic dipole moment. We show that this phase exhibits a piecewise-linear dependence on the laser intensity. This dependence can be interpreted in quasiclassical terms, and is related to the action acquired by the electron during its motion in the laser held. The value of the phase, however, is also affected by the quantum effects of tunneling, diffusion, and interference. The phase of the dipole moment considerably influences the conversion efficiency, as well as the coherence properties, of the harmonics generated in macroscopic media.

Department/s

  • Atomic Physics

Publishing year

1995

Language

English

Pages

4747-4754

Publication/Series

Physical Review A (Atomic, Molecular and Optical Physics)

Volume

52

Issue

6

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1050-2947