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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 7 — Jul. 1, 2010
  • pp: 1317–1324

Theory of surface second-harmonic generation in silica nanowires

Jesper Lægsgaard  »View Author Affiliations

JOSA B, Vol. 27, Issue 7, pp. 1317-1324 (2010)

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The possibility of second-harmonic generation based on surface dipole and bulk multipole nonlinearities in silica nanowires is investigated numerically. Both circular and microstructured nanowires are considered. Phase matching is provided by propagating the pump field in the fundamental mode, while generating the second harmonic in one of the modes of the LP 11 multiplet. This is shown to work in both circular and microstructured nanowires, although only one of the LP 11 modes can be phase-matched in the microstructure. The prospect of obtaining large conversion efficiencies in silica-based nanowires is critically discussed, based on simulations of second-harmonic generation in nanowires with a fluctuating phase-matching wavelength. It is concluded that efficient wavelength conversion will require strong improvements in the nanowire uniformity, peak powers well in excess of 10 KW , increase of the second-order nonlinearity by an order of magnitude by use of a different base material, or highly polarizable surface coatings.

© 2010 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(060.4005) Fiber optics and optical communications : Microstructured fibers
(190.4223) Nonlinear optics : Nonlinear wave mixing
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 17, 2010
Revised Manuscript: May 10, 2010
Manuscript Accepted: May 11, 2010
Published: June 7, 2010

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June 4, 2010 Spotlight on Optics

Jesper Lægsgaard, "Theory of surface second-harmonic generation in silica nanowires," J. Opt. Soc. Am. B 27, 1317-1324 (2010)

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