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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 2 — Jan. 15, 2010
  • pp: 133–135

Particle-swarm optimization of broadband nanoplasmonic arrays

Carlo Forestiere, Massimo Donelli, Gary F. Walsh, Edoardo Zeni, Giovanni Miano, and Luca Dal Negro  »View Author Affiliations

Optics Letters, Vol. 35, Issue 2, pp. 133-135 (2010)

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We used the particle swarm optimization algorithm, an evolutionary computational technique, to design metal nanoparticle arrays that produce broadband plasmonic field enhancement over the entire visible spectral range. The resulting structures turn out to be aperiodic and feature dense Fourier spectra with many closely packed particle clusters. We conclude that broadband field-enhancement effects in nanoplasmonics can be achieved by engineering aperiodic arrays with a large number of spatial frequencies that provide the necessary interplay between long-range diffractive interactions at multiple length scales and near-field quasi-static coupling within small nanoparticle clusters.

© 2010 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(290.4020) Scattering : Mie theory
(050.6624) Diffraction and gratings : Subwavelength structures
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering

ToC Category:
Optics at Surfaces

Original Manuscript: September 17, 2009
Revised Manuscript: December 1, 2009
Manuscript Accepted: December 7, 2009
Published: January 11, 2010

Carlo Forestiere, Massimo Donelli, Gary F. Walsh, Edoardo Zeni, Giovanni Miano, and Luca Dal Negro, "Particle-swarm optimization of broadband nanoplasmonic arrays," Opt. Lett. 35, 133-135 (2010)

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