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Dispersion relations in metal nanoparticle chains: necessity of the multipole approach |
JOSA B, Vol. 29, Issue 5, pp. 1012-1019 (2012)
http://dx.doi.org/10.1364/JOSAB.29.001012
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Abstract
Lorenz–Mie multiple-scattering theory is used to perform semi-analytical calculations of the lossy dispersion relations of propagating modes in infinite chains of metallic spheres. Lossy modes are described by allowing the projection of the wavevector along the chain axis to be a complex number rather than the more common complex frequency description. We show that even when the constituent particles are much smaller than the wavelength, one generally needs to go well beyond the coupled dipole approximation to achieve stable predictions.
© 2012 Optical Society of America
OCIS Codes
(230.7370) Optical devices : Waveguides
(240.5420) Optics at surfaces : Polaritons
(290.4020) Scattering : Mie theory
(290.4210) Scattering : Multiple scattering
(250.5403) Optoelectronics : Plasmonics
(290.5825) Scattering : Scattering theory
ToC Category:
Scattering
History
Original Manuscript: December 13, 2011
Manuscript Accepted: January 30, 2012
Published: April 20, 2012
Citation
Brice Rolly, Nicolas Bonod, and Brian Stout, "Dispersion relations in metal nanoparticle chains: necessity of the multipole approach," J. Opt. Soc. Am. B 29, 1012-1019 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-5-1012
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