High-order harmonic generation from plasma mirrors

Cédric Thaury (1) , F. Quéré (1) , H. George , J. P. Geindre (2) , P. Monot , Ph. Martin

1 SPAM - Service des Photons, Atomes et Molécules
2 LULI - Laboratoire pour l'utilisation des lasers intenses

We discuss the two mechanisms involved in high-order harmonic generation from plasma mirrors, and show that they can be clearly identified experimentally. The very different phase properties of the corresponding harmonics lead to light beams with different divergences. This can be exploited to select a particular type of harmonic by spatial filtering in the far-field.

Domaines: Physique des plasmas [physics.plasm-ph]

Cédric Thaury, F. Quéré, H. George, J. P. Geindre, P. Monot, et al.. High-order harmonic generation from plasma mirrors. The European Physical Journal. Special Topics, 2009, 175 (1), pp.4348. ⟨10.1140/epjst/e2009-01115-6⟩. ⟨hal-01166832⟩