Optical toroidal dipolar response by an asymmetric double-bar metamaterial
Optics
2015-03-13 v1
Abstract
We demonstrate that the toroidal dipolar response can be realized in the optical regime by designing a feasible nanostructured metamaterial, comprising asymmetric double-bar magnetic resonators assembled into a toroid-like configuration. It is confirmed numerically that an optical toroidal dipolar moment dominates over other moments. This response is characterized by a strong confinement of an E-field component at the toroid center, oriented perpendicular to the H-vortex plane. The resonance-enhanced optical toroidal response can provide an experimental avenue for various interesting optical phenomena associated with the elusive toroidal moment.
Keywords
Cite
@article{arxiv.1212.5651,
title = {Optical toroidal dipolar response by an asymmetric double-bar metamaterial},
author = {Zheng-Gao Dong and J. Zhu and Junsuk Rho and Jia-Qi Li and Changgui Lu and Xiaobo Yin and X. Zhang},
journal= {arXiv preprint arXiv:1212.5651},
year = {2015}
}
Comments
17 pages, 6 figures