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High-order-harmonic generation: Towards laser-induced phase-matching control and relativistic effects

  • P. Balcou
  • , R. Haroutunian
  • , S. Sebban
  • , G. Grillon
  • , A. Rousse
  • , G. Mullot
  • , J. P. Chambaret
  • , G. Rey
  • , A. Antonetti
  • , D. Hulin
  • , L. Roos
  • , D. Descamps
  • , M. B. Gaarde
  • , A. L'Huillier
  • , E. Constant
  • , E. Mevel
  • , D. Von Der Linde
  • , A. Orisch
  • , A. Tarasevitch
  • , U. Teubner
  • D. Klöpfel, W. Theobald
  • Laboratory d'Optique Appliquée, ENSTA, CNRS-École Polytechnique
  • Lund Institute of Technology
  • Univ. Bordeaux
  • University of Duisburg-Essen
  • Friedrich-Schiller University

Résultats de recherche: Contribution à un journalArticle de révisionRevue par des pairs

Résumé

We present a review of some recent results on high-order-harmonic generation, aiming at optimizing the photon flux to allow for future applications in extreme-ultra-violet nonlinear optics. We first present new schemes to control phase matching of high harmonics in gases, by using the effect of the spatially varying atomic phase displayed by the high harmonics. An enhancement by a factor of 50 is observed in neon in conditions for which the gradient of the atomic dispersion balances the electronic dispersion. A new scheme to manipulate the laser field was demonstrated, and shown to improve phase matching. We then turn to high-harmonic generation by solid targets, and show that high harmonics generated by an intense 30-fs laser pulse remain collimated even at the threshold of the relativistic regime.

langue originaleAnglais
Pages (de - à)509-515
Nombre de pages7
journalApplied Physics B: Lasers and Optics
Volume74
Numéro de publication6
Les DOIs
étatPublié - 1 janv. 2002

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