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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 3186–3198

Local plasmon resonances of metal-in-metal core-shells

Matthew Arnold, Martin Blaber, and Mike Ford  »View Author Affiliations

Optics Express, Vol. 22, Issue 3, pp. 3186-3198 (2014)

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We investigate the tunability and strength of the localized surface plasmons of binary metal-in-metal core-shells. Ellipsoids are used as an analytical model to show how the fill factor continuously tunes a hybridized mode between those of the constituents, suggesting the use of metal combinations with widely differing plasma frequencies for broad tunability. A quasistatic eigenmode method is used separate geometric and material parameters to facilitate prediction of hybridized dipole modes in arbitrary shapes. A modified ellipsoid model is found to adequately describe the symmetric dipole-dipole resonance of well-rounded cuboids.

© 2014 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics

ToC Category:

Original Manuscript: September 6, 2013
Revised Manuscript: December 17, 2013
Manuscript Accepted: December 18, 2013
Published: February 4, 2014

Matthew Arnold, Martin Blaber, and Mike Ford, "Local plasmon resonances of metal-in-metal core-shells," Opt. Express 22, 3186-3198 (2014)

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