title: Influence of surface waves on plasma high-order harmonic generation.
abstract: The influence of surface plasma waves on high-order harmonic generation from the interaction of intense lasers with overdense plasma is analyzed. It is shown that the surface waves lead to the emission of harmonics away from the optical axis, whereas the high-order on-axis harmonics are lowered in intensity. Our simulation results indicate that surface plasma wave generation plays a crucial role in surface high-order harmonic generation experiments. Furthermore, a novel surface plasma wave generation process different from the well-known two-surface wave decay is observed in the highly relativistic regime.
authors.affiliation: Institut für theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany.
authors.forename: Daniel
authors.initials: D
authors.lastname: an der Brügge
authors.forename: Naveen
authors.initials: N
authors.lastname: Kumar
authors.forename: Alexander
authors.initials: A
authors.lastname: Pukhov
authors.forename: Christian
authors.initials: C
authors.lastname: Rödel