Applicability of point dipoles approximation to all-dielectric metamaterials

S. M. Kuznetsova; A. Andryieuski; A. V. Lavrinenko

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arXiv · 1503.06786

Applicability of point dipoles approximation to all-dielectric metamaterials

S. M. Kuznetsova·A. Andryieuski·A. V. Lavrinenko

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Abstract

All-dielectric metamaterials consisting of high-dielectric inclusions in a low-dielectric matrix are considered as a low-loss alternative to resonant metal-based metamaterials. In this contribution we investigate the applicability of the point electric and magnetic dipoles approximation to dielectric meta-atoms on the example of a dielectric ring metamaterial. Despite the large electrical size of high-dielectric meta-atoms, the dipole approximation allows for accurate prediction of the metamaterials properties for the rings with diameters up to ~0.8 of the lattice constant. The results provide important guidelines for design and optimization of all-dielectric metamaterials.

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S. M. Kuznetsova, A. Andryieuski, A. V. Lavrinenko. 2015-04-30. Applicability of point dipoles approximation to all-dielectric metamaterials. https://arxiv.org/abs/1503.06786

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