Direct determination of the resonance properties of metallic conical nanoantennas
De Angelis, Francesco De
Di Fabrizio, Enzo M.
Proietti Zaccaria, Remo
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
Materials Science and Engineering Program
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AbstractWe 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. © 2014 Optical Society of America.
SponsorsThe authors gratefully acknowledge support from the European project FOCUS FP7 no. 270483. L. R. also acknowledges financial support from NSERC Discovery Grant and FQRNT Nouveaux Chercheurs Grant.
PublisherThe Optical Society