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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 25, Iss. 11 — Nov. 1, 2008
  • pp: 2767–2775

Optical response of linear chains of metal nanospheres and nanospheroids

Stephen J. Norton and Tuan Vo-Dinh  »View Author Affiliations


JOSA A, Vol. 25, Issue 11, pp. 2767-2775 (2008)
http://dx.doi.org/10.1364/JOSAA.25.002767


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Abstract

A semi-analytical method for computing the electric field surrounding a finite linear chain of metal nanospheres and nanospheroids is described. In treating chains or clusters of spheres, a common approach is to use the spherical-harmonic addition theorem to relate the multipole expansion coefficients between different spheres. A method is described here that avoids the use of spherical-harmonic addition theorems, which are not applicable to spheroidal chains. Simulations are given that illustrate the large field enhancements that can occur in the gaps between silver nanoparticles arising from plasmon resonances.

© 2008 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
(290.4210) Scattering : Multiple scattering
(290.5850) Scattering : Scattering, particles
(290.5860) Scattering : Scattering, Raman
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering

ToC Category:
Optics at Surfaces

History
Original Manuscript: May 22, 2008
Revised Manuscript: August 2, 2008
Manuscript Accepted: August 21, 2008
Published: October 17, 2008

Virtual Issues
Vol. 4, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Stephen J. Norton and Tuan Vo-Dinh, "Optical response of linear chains of metal nanospheres and nanospheroids," J. Opt. Soc. Am. A 25, 2767-2775 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-11-2767

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