Optical magnetic response in three-dimensional metamaterial of upright plasmonic meta-molecules

We report the first three-dimensional photonic metamaterial, an array of erected U-shape plasmonic gold meta-molecules, that exhibits a profound response to the magnetic field of light incident normal to the array. The metamaterial was fabricated using a double exposure e-beam lithographic process....

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Veröffentlicht in:Optics express 2011-06, Vol.19 (13), p.12837-12842
Hauptverfasser: Chen, Wei Ting, Chen, Chen Jung, Wu, Pin Chieh, Sun, Shulin, Zhou, Lei, Guo, Guang-Yu, Hsiao, Chinh Ting, Yang, Kuang-Yu, Zheludev, Nikolay I, Tsai, Din Ping
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Sprache:eng
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Zusammenfassung:We report the first three-dimensional photonic metamaterial, an array of erected U-shape plasmonic gold meta-molecules, that exhibits a profound response to the magnetic field of light incident normal to the array. The metamaterial was fabricated using a double exposure e-beam lithographic process. It was investigated by optical measurements and finite-element simulations, and showed that the magnetic field solely depends on the plasmonic resonance mode showing either enhanced in the centre of the erected U-shape meta-molecule (16 times enhancement) or enhanced around two prongs of erected U-shape meta-molecule (4 times enhancement).
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.19.012837