We present a simple method that is able to predict the resonant frequencies of a metallic conical nanoantenna. The alculation 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.
Direct determination of the resonance properties of metallic conical nanoantennas / S. Tuccio, L. Razzari, A. Alabastri, A. Toma, C. Liberale, F. De Angelis, P. Candeloro, G. Das, A. Giugni, E. Di Fabrizio, R.P. Zaccaria. - In: OPTICS LETTERS. - ISSN 0146-9592. - 39:3(2014 Jan 24), pp. 571-573. [10.1364/OL.39.000571]
Direct determination of the resonance properties of metallic conical nanoantennas
A. Giugni;
2014
Abstract
We present a simple method that is able to predict the resonant frequencies of a metallic conical nanoantenna. The alculation 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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