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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 4 — Feb. 15, 2009
  • pp: 401–403

Diffractive coupling in gold nanoparticle arrays and the effect of disorder

Baptiste Auguié and William L. Barnes  »View Author Affiliations


Optics Letters, Vol. 34, Issue 4, pp. 401-403 (2009)
http://dx.doi.org/10.1364/OL.34.000401


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Abstract

Two-dimensional arrays of gold nanoparticles with a periodicity commensurate with the wavelength of resonant excitation of localized plasmons have been shown to exhibit a strong long-range interaction between particles. We investigate experimentally the effect of varying the degree of disorder in the geometrical arrangement from a periodic to a disordered lattice with constant occupancy. We also investigate the effect of disorder arising from variations in particle size for a regular lattice, and the effect this has on the broadening of the spectral line shape is discussed. A coupled dipole model is used to describe the observed spectral features.

© 2009 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(290.2200) Scattering : Extinction
(290.3700) Scattering : Linewidth
(290.4210) Scattering : Multiple scattering
(290.5850) Scattering : Scattering, particles
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Spectroscopy

History
Original Manuscript: November 6, 2008
Manuscript Accepted: December 15, 2008
Published: February 4, 2009

Citation
Baptiste Auguié and William L. Barnes, "Diffractive coupling in gold nanoparticle arrays and the effect of disorder," Opt. Lett. 34, 401-403 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-4-401


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