Abstract

We proposed a magnetic metamaterial (MM) with extremely large positive and negative permeability. The MMs are structured by simple metal cavity resonators, contributing to exciting magnetic responses from toroid current, dipole current, and nearest-neighbor interactions of the cavity resonator array. When the three responses coupled with each other perfectly, a strong magnetic resonance is obtained. Besides, the cavity-based MM benefits suppress the saturation effect of the magnetic response at optical frequencies, different from that common in traditional split-ring resonators. Therefore, the cavity-based MM is available in microwave, terahertz, and optical regions by appropriately tailoring the structural parameters. Such a cavity-based MM holds a promising strong magnetic response from microwave to optic frequencies only by tailoring structural parameters and provides a new design method to construct magnetic MM.

© 2020 Optical Society of America

All-dielectric bulk isotropic double-negative metamaterials

Alexander Zharov, Vanessa Fierro, and Alain Celzard
J. Opt. Soc. Am. B 38(1) 159-166 (2021)

Frequency dependence of the magnetic response of split-ring resonators

Atsushi Ishikawa, Takuo Tanaka, and Satoshi Kawata
J. Opt. Soc. Am. B 24(3) 510-515 (2007)

The origin of magnetic polarizability in metamaterials at optical frequencies - an electrodynamic approach

Carsten Rockstuhl, Thomas Zentgraf, Ekaterina Pshenay-Severin, Jörg Petschulat, Arkadi Chipouline, Jürgen Kuhl, Thomas Pertsch, Harald Giessen, and Falk Lederer
Opt. Express 15(14) 8871-8883 (2007)

Spectroscopy of metamaterials from infrared to optical frequencies

Willie J. Padilla, David R. Smith, and Dimitri N. Basov
J. Opt. Soc. Am. B 23(3) 404-414 (2006)

Toroidal dipole resonance in an asymmetric double-disk metamaterial

Jie Li, Ping Chen, Yinghua Wang, Zhenggao Dong, and Yongjin Wang
Opt. Express 28(25) 38076-38082 (2020)