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Journal Article

Influence of Surface Waves on Plasma High-Order Harmonic Generation


Kumar,  Naveen
Institut für theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany;
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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an der Brügge, D., Kumar, N., Pukhov, A., & Rödel, C. (2012). Influence of Surface Waves on Plasma High-Order Harmonic Generation. Physical Review Letters, 108(12): 125002, pp. 1-5. doi:10.1103/PhysRevLett.108.125002.

Cite as:
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.