2015 Fiscal Year Final Research Report
Velocity control of surface plasmon excited on a two-dimensional metamaterial
| Project/Area Number |
25790065
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | メタマテリアル / 表面プラズモン / 群速度 / フラットバンド / テラヘルツ波 |
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| Outline of Final Research Achievements |
It is possible to control the velocity of surface plasmon propagating on a structured metallic surface by designing the two-dimensional structure. In this project, we focused on a flat band, where the surface plasmon is completely localized. We proposed a metallic structure to realize the flat band for all wavevectors, and performed experimental demonstration in terahertz regions. The formation of the flat band was verified by the transmission measurement of the plane wave and an attenuated total reflection method. In addition, the extremely slow propagation of the surface plasmon unique to the flat band was demonstrated through electromagnetic simulation by computing the time evolution of the surface plasmon on the structured metallic surface.
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| Free Research Field |
メタマテリアル
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