The toroidal spectral responses of toroidal metamolecule integrated by four gold U-shaped SRRs at optical frequencies are numerically studied. Downsizing the structure achieve observation of a plasmonic toroidal mode at optical frequencies.
© 2011 OSA
Y. Huang, W. T. Chen, P. C. Wu, Y. Chau, D. P. Tsai, V. A. Fedotov, V. Savinov, and N. I. Zheludev, "Plasmonic Toroidal Response of four U-shaped resonant rings at Optical Frequencies," in Frontiers in Optics 2011/Laser Science XXVII, OSA Technical Digest (Optical Society of America, 2011), paper JTuA37a.
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