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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 21 — Oct. 10, 2011
  • pp: 20910–20915

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

Kwang-Hyon Kim, Anton Husakou, and Joachim Herrmann  »View Author Affiliations

Optics Express, Vol. 19, Issue 21, pp. 20910-20915 (2011)

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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.

© 2011 OSA

OCIS Codes
(260.7200) Physical optics : Ultraviolet, extreme
(020.2649) Atomic and molecular physics : Strong field laser physics
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

Original Manuscript: July 21, 2011
Revised Manuscript: September 8, 2011
Manuscript Accepted: September 9, 2011
Published: October 5, 2011

Kwang-Hyon Kim, Anton Husakou, and Joachim Herrmann, "High-order harmonic generation employing field enhancement by metallic fractal rough surfaces," Opt. Express 19, 20910-20915 (2011)

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