Optical toroidal dipolar response by an asymmetric double-bar metamaterial

Autor:	Dong, Zheng-Gao, Zhu, J., Rho, Junsuk, Li, Jia-Qi, Lu, Changgui, Yin, Xiaobo, Zhang, X.
Rok vydání:	2012
Předmět:	Physics - Optics
Zdroj:	Appl. Phys. Lett. 101, 144105 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4757613
Popis:	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. Comment: 17 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1212.5651 Zobrazit plný text záznamu View this record from Arxiv