Optical toroidal response in three-dimensional plasmonic metamaterial

Chun Yen Liao; Mu Ku Chen; Yao-Wei Huang; Wei Ting Chen; Pin Chieh Wu; Wei-Yi Tsai; Hao Tsun Lin; Yi-Teng Huang; Ting-Yu Chen; Jia-Wern Chen; Vassili Savinov; Nikolay I. Zheludev; Din Ping Tsai

doi:10.1117/12.2189052

28 August 2015 Optical toroidal response in three-dimensional plasmonic metamaterial

Chun Yen Liao, Mu Ku Chen, Yao-Wei Huang, Wei Ting Chen, Pin Chieh Wu, Wei-Yi Tsai, Hao Tsun Lin, Yi-Teng Huang, Ting-Yu Chen, Jia-Wern Chen, Vassili Savinov, Nikolay I. Zheludev, Din Ping Tsai

Author Affiliations +

Proceedings Volume 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII; 954724 (2015) https://doi.org/10.1117/12.2189052
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

Toroidal dipole moments, the third kind of fundamental dipole moment, have unusual electromagnetic properties different from the electric and magnetic multipoles. We fabricate a new type of 3D plasmonic toroidal metamaterial by using mutual coupling between dumbbell-shaped gold apertures with vertical split-ring resonators (VSRRs) at optical frequency. The radiated power of multipole moments are calculated and analyzed to improve the meta-system is dominated by the toroidal dipole moment. This result paves a way for practical application on metamaterial based devices, such as biosensor and lasing spaser.

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Chun Yen Liao, Mu Ku Chen, Yao-Wei Huang, Wei Ting Chen, Pin Chieh Wu, Wei-Yi Tsai, Hao Tsun Lin, Yi-Teng Huang, Ting-Yu Chen, Jia-Wern Chen, Vassili Savinov, Nikolay I. Zheludev, and Din Ping Tsai "Optical toroidal response in three-dimensional plasmonic metamaterial", Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 954724 (28 August 2015); https://doi.org/10.1117/12.2189052

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