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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 15 — Jul. 19, 2010
  • pp: 15377–15382

Sub-wavelength light localization in nanorod chain enhances second-harmonic generation

Cristian Ciracì and Emmanuel Centeno  »View Author Affiliations

Optics Express, Vol. 18, Issue 15, pp. 15377-15382 (2010)

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We demonstrate that nonlinear dielectric nanorod chains enhance the second-harmonic generation by taking advantage of sub-wavelength light confinement. We report a conversion efficiency higher than 10% for only 200W input pump peak power in a 20 nanorod chain possessing a nonlinear susceptibility χ(2) = 10 pm/V. This giant frequency conversion is shown to originate from a lateral squeezing of the fundamental guided mode and from the combination of slow light at both frequencies ω and 2ω. These results open an interesting route for the design of highly integrated efficient nonlinear devices.

© 2010 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics

ToC Category:
Nonlinear Optics

Original Manuscript: May 20, 2010
Revised Manuscript: June 22, 2010
Manuscript Accepted: June 22, 2010
Published: July 2, 2010

Cristian Ciracì and Emmanuel Centeno, "Sub-wavelength light localization in nanorod chain enhances second-harmonic generation," Opt. Express 18, 15377-15382 (2010)

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