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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 3 — Mar. 1, 2010
  • pp: 408–416

Engineering the second harmonic generation pattern from coupled gold nanowires

A. Benedetti, M. Centini, C. Sibilia, and M. Bertolotti  »View Author Affiliations


JOSA B, Vol. 27, Issue 3, pp. 408-416 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000408


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Abstract

We numerically investigated second harmonic generation from systems composed of two coupled gold nanowires. The developed method allows one to arbitrarily change the shape of the wire cross section in order to explore the generated and scattered field patterns. Our results suggest that the overall second harmonic generation is related to the electromagnetic energy per unit length stored in the gap area between the wires. These geometrical considerations make further optimization possible. As an example we discuss the possibility to select dipolar emission and/or quadrupolar emission patterns. The selection mechanism responsible for this kind of emission can be traced back to the interaction between nonlinear sources with the surface plasmon resonance of the metallic wires.

© 2010 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.3970) Nonlinear optics : Microparticle nonlinear optics
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(290.5850) Scattering : Scattering, particles

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 2, 2009
Manuscript Accepted: December 16, 2009
Published: February 4, 2010

Citation
A. Benedetti, M. Centini, C. Sibilia, and M. Bertolotti, "Engineering the second harmonic generation pattern from coupled gold nanowires," J. Opt. Soc. Am. B 27, 408-416 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-3-408

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