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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 11968–11975

FDTD simulations of localization and enhancements on fractal plasmonics nanostructures

Stéphanie Buil, Julien Laverdant, Bruno Berini, Pierre Maso, Jean-Pierre Hermier, and Xavier Quélin  »View Author Affiliations


Optics Express, Vol. 20, Issue 11, pp. 11968-11975 (2012)
http://dx.doi.org/10.1364/OE.20.011968


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Abstract

A parallelized 3D FDTD (Finite-Difference Time-Domain) solver has been used to study the near-field electromagnetic intensity upon plasmonics nanostructures. The studied structures are obtained from AFM (Atomic Force Microscopy) topography measured on real disordered gold layers deposited by thermal evaporation under ultra-high vacuum. The simulation results obtained with these 3D metallic nanostructures are in good agreement with previous experimental results: the localization of the electromagnetic intensity in subwavelength areas (“hot spots”) is demonstrated; the spectral and polarization dependences of the position of these “hot spots” are also satisfactory; the enhancement factors obtained are realistic compared to the experimental ones. These results could be useful to further our understanding of the electromagnetic behavior of random metal layers.

© 2012 OSA

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(050.1755) Diffraction and gratings : Computational electromagnetic methods

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 11, 2012
Revised Manuscript: May 4, 2012
Manuscript Accepted: May 5, 2012
Published: May 10, 2012

Citation
Stéphanie Buil, Julien Laverdant, Bruno Berini, Pierre Maso, Jean-Pierre Hermier, and Xavier Quélin, "FDTD simulations of localization and enhancements on fractal plasmonics nanostructures," Opt. Express 20, 11968-11975 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-11-11968


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