META 2021, META'12

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Magnetic response of upright meta-molecules in optical region
D. P. Tsai, W. T. Chen, P. C. Wu, C. T. Hsiao, K. Y. Yang, Y. W. Huang, C. Y. Liao, S. Sun, C. J. Chen, L. Zhou, G. Y. Guo, V. Fedotov, V. Savinov, N. I. Zheludev

Last modified: 2011-12-27


Single split ring resonator (SRR) composed of nonmagnetic metal can be used to implement a magnetic resonance. The LC response of SRR structures can be excited by an incident light with electric field perpendicular to two prongs of U-shape SRR or an incident light with magnetic field oscillating through the gap of U-shape SRR. In the case of erected SRR structures, the electromagnetic field solely depends on the resonance mode either enhanced between two prongs or around two prongs of single erected U-shape gold nano rings. The induced magnetic dipole of such erected SRR structures couple to each other also result in special electromagnetic spectra, such as plasmon induced transparency and toroidal dipole response, providing a novel plasmonic resonant mode in metamaterial.