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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2244–2246

Direct eigenmode analysis of plasmonic modes in metal nanoparticle chain with layered medium

Jian-Wen Dong and Zi-Lan Deng  »View Author Affiliations

Optics Letters, Vol. 38, Issue 13, pp. 2244-2246 (2013)

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Using the dyadic Green function (GF) with a multilayer medium, we propose an eigendecomposition (ED) analysis of a plasmonic system composed of a one-dimensional periodic metal nanoparticle chain and planar layered structure. An effective eigenpolarizability involving the collective effects of both the chain and the layered structure is well defined to characterize the dispersion relation and the mode quality of the plasmonic modes. Applying this method, we demonstrate that the interplay between the surface plasmon polaritons (SPPs) at the metal–dielectric interface and the localized plasmon in the chain enables strong mode splitting. In particular, for the polarization perpendicular to layer surface, high-quality modes can be present inside the light cone even if the chain is open to the surrounding air. A slow-light band is also predicted to exist as long as the layered medium supports a SPP mode that can couple to the chain mode.

© 2013 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(240.6680) Optics at surfaces : Surface plasmons
(260.2030) Physical optics : Dispersion
(260.3910) Physical optics : Metal optics

ToC Category:
Physical Optics

Original Manuscript: March 12, 2013
Revised Manuscript: May 29, 2013
Manuscript Accepted: May 29, 2013
Published: June 24, 2013

Jian-Wen Dong and Zi-Lan Deng, "Direct eigenmode analysis of plasmonic modes in metal nanoparticle chain with layered medium," Opt. Lett. 38, 2244-2246 (2013)

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