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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Coherence properties of high-order harmonics : Application to high-density laser-plasma diagnostic

Author

  • H. Merdji
  • P. Salières
  • L. Le Déroff
  • J. F. Hergott
  • B. Carré
  • D. Joyeux
  • D. Descamps
  • J. Norin
  • C. Lyng
  • A. L'Huillier
  • C. G. Wahlström
  • M. Bellini
  • S. Huller

Summary, in English

We present two interferometry schemes in the extreme ultraviolet, based on either the wave-front division of a unique harmonic beam (1st scheme) or two spatially separated, phase-locked harmonic sources (2nd scheme). In the first scheme using a Fresnel bimirror interferometer, we measure the degree of spatial coherence of the 13 th harmonic generated in xenon, as a function of different parameters. A high degree of coherence, larger than 0.5, is found for the best conditions in almost the full section of the beam. Then, we demonstrate that the second scheme can be used for interferometry measurements with an ultrahigh time resolution. The 11th harmonic is used to study the spatial variation of the electron density of a laser-produced plasma. Electronic densities higher than 2.10 20 cm -3 are measured.

Department/s

  • Atomic Physics
  • Department of Physics

Publishing year

2000-12-01

Language

English

Pages

495-502

Publication/Series

Laser and Particle Beams

Volume

18

Issue

3

Document type

Journal article

Publisher

Cambridge University Press

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0263-0346