16 September 2016 Design of tunable cylindrical dielectric nanoantenna
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Abstract
A tunable cylindrical all dielectric optical nanoantenna has been proposed. A silicon nanocylinder of radius 60 nm and height 150 nm has been considered. The azimuthally symmetric, complete forward scattering at first Kerker’s condition and backward scattering with minimum forward scattering at second generalized Kerker’s condition in near infra-red region has been observed for the proposed design which makes silicon nanocylinder a promising candidate for optical nanoantenna applications. The effect of the dimensions of the dielectric nanocylinder on the scattering properties of the cylindrical nanoantenna has been analyzed using finite element method. We have analyzed that the variation in diameter of nanocylinder has great influence on the strength of interference of electric and magnetic dipolar resonances. Further, we have observed tuning ability of the cylindrical nanoantenna with respect to the variation in its radius.
Conference Presentation
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Inder Devi, Reena ., Yogita Kalra, R. K. Sinha, "Design of tunable cylindrical dielectric nanoantenna", Proc. SPIE 9919, Nanophotonic Materials XIII, 991903 (16 September 2016); doi: 10.1117/12.2237849; https://doi.org/10.1117/12.2237849
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