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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. 28, Iss. 6 — Jun. 1, 2011
  • pp: 1446–1458

Characterization of complex plasmonic modes in two-dimensional periodic arrays of metal nanospheres

Ana L. Fructos, Salvatore Campione, Filippo Capolino, and Francisco Mesa  »View Author Affiliations


JOSA B, Vol. 28, Issue 6, pp. 1446-1458 (2011)
http://dx.doi.org/10.1364/JOSAB.28.001446


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Abstract

Two-dimensional periodic arrays of noble metal nanospheres support a variety of optical phenomena, including bound and leaky modes of several types. The scope of this paper is the characterization of the modal dispersion diagrams of planar arrays of silver nanospheres, with the ability to follow individual modal evolutions. The metal spherical nanoparticles are described using the single dipole approximation technique by including all the retarded dynamic field terms. Polarizability of the nanospheres is provided by the Mie theory. Dispersion diagrams for both physical and nonphysical modes are shown for a square lattice of Ag nanospheres for the case of lossless and lossy metal particles, with dipole moments polarized along the x, y, and z directions. Though an array with one set of parameters has been studied, the analysis method and classification are general. The evolution of modes through different Riemann sheets and analysis of guidance and radiation are studied in detail.

© 2011 Optical Society of America

OCIS Codes
(260.2110) Physical optics : Electromagnetic optics
(160.3918) Materials : Metamaterials
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Materials

History
Original Manuscript: February 14, 2011
Manuscript Accepted: March 16, 2011
Published: May 19, 2011

Citation
Ana L. Fructos, Salvatore Campione, Filippo Capolino, and Francisco Mesa, "Characterization of complex plasmonic modes in two-dimensional periodic arrays of metal nanospheres," J. Opt. Soc. Am. B 28, 1446-1458 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-6-1446

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