Direct determination of the resonance properties of metallic conical nanoantennas.

Opt Lett 2014 Feb;39(3):571-3

We present a simple method that is able to predict the resonant frequencies of a metallic conical nanoantenna. The calculation is based on an integral relation that takes into account the dependence of the effective refractive index of the plasmonic mode on the cone radius. Numerical simulations retrieving the near field properties of nanocones with different lengths are also performed for comparison. The fine agreement between the two approaches demonstrates the validity of our method.

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http://dx.doi.org/10.1364/OL.39.000571DOI Listing
February 2014
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