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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. 1 — Jan. 1, 2010
  • pp: 92–98

Interface effects in plasmon-enhanced second-harmonic generation from self-assembled multilayer films

Kai Chen, Cemil Durak, Akhilesh Garg, Charles Brands, Richey M. Davis, James R. Heflin, and Hans D. Robinson  »View Author Affiliations


JOSA B, Vol. 27, Issue 1, pp. 92-98 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000092


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Abstract

We have compared the plasmonic enhancement of second-order nonlinear optical (NLO) properties in two types of ionic self-assembled multilayer (ISAM) films combined with Ag nanoparticles fabricated using nanosphere lithography (NSL). The light-concentrating properties of the Ag particles lead to a marked increase in the NLO efficiencies of thin ISAM films. The induced enhancement is found to be much larger in conventional ISAM films than in films made with the hybrid covalent ISAM technique (HCISAM), even though the latter have a significantly larger intrinsic bulk second-order nonlinear susceptibility ( χ ( 2 ) ) . The plasmonic enhancement of NLO effects is shown to be primarily an interface effect due to the short decay length of the plasmon modes. The importance of interface effects in the films has been investigated by surrounding thin ISAM and HCISAM films with NLO-inactive buffer layers, which confirmed the important role played by the interfaces, particularly for the HCISAM films.

© 2009 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(240.6680) Optics at surfaces : Surface plasmons
(160.4236) Materials : Nanomaterials
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 1, 2009
Manuscript Accepted: November 5, 2009
Published: December 24, 2009

Citation
Kai Chen, Cemil Durak, Akhilesh Garg, Charles Brands, Richey M. Davis, James R. Heflin, and Hans D. Robinson, "Interface effects in plasmon-enhanced second-harmonic generation from self-assembled multilayer films," J. Opt. Soc. Am. B 27, 92-98 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-1-92

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