Harmonic emission from cluster nanoplasmas subject to intense short laser pulses

Details Harmonic emission from cluster nanoplasmas subject to intense short laser pulses Harmonic emission from cluster nanoplasmas subject to intense short laser pulses

2007-12-04

arxiv.org/abs/0712.0586v2

Physics

Plasma Physics

12 pages, 7 figures, RevTeX

Scientific paper

10.1103/PhysRevA.77.063201

Harmonic emission from cluster nanoplasmas subject to short intense infrared laser pulses is studied. In a previous publication [M. Kundu et al., Phys. Rev. A 76, 033201 (2007)] we reported particle-in-cell simulation results showing resonant enhancements of low-order harmonics when the Mie plasma frequency of the ionizing and expanding cluster resonates with the respective harmonic frequency. Simultaneously we found that high-order harmonics were barely present in the spectrum, even at high intensities. The current paper is focused on the analytical modeling of the process. We show that dynamical stochasticity owing to nonlinear resonance inhibits the emission of high order harmonics.

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