High-order harmonic generation employing field enhancement by metallic fractal rough surfaces | Zendy

KwangHyon Kim | Zendy; A. Husakou | Zendy; Joachım Herrmann | Zendy

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High-order harmonic generation employing field enhancement by metallic fractal rough surfaces

Author(s) -

KwangHyon Kim,

A. Husakou,

Joachım Herrmann

Publication year - 2011

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.020910

Subject(s) - optics , fractal , high harmonic generation , harmonics , intensity (physics) , electric field , materials science , plateau (mathematics) , physics , laser , mathematical analysis , mathematics , quantum mechanics , voltage

We numerically investigate high-order harmonic generation (HHG) in noble gases in the vicinity of fractal structures of metallic rough surfaces described by the restricted solid-on-solid model. The calculated intensity enhancement factors in the range of 10³ enables HHG up to the 50-th order with low pump intensity down to tens of GW/cm². The increased interaction volume of "hot spots" in the case of grazing incidence of s-polarized pump pulses leads to an efficiency of harmonics in the plateau region of about 10⁻⁷.

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