| Presentation | 2008-09-30 Superfocusing of surface plasmons using tapered waveguide structures Kazuhiro YAMAMOTO, Kazuyoshi KURIHARA, Junichi TAKAHARA, Akira OTOMO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To realize molecular excitation at nanoscale dimension with high efficiency, we can use superfocusing of suface plasmon polaritons. Superfocusing of suface plasmon polaritons in simple metallic tapered structures (cones and wedges have been studied theoretically. In this paper, we propose more practical method to realize the superfocusing modes based of waveguide structures, and present a numerical analysis these structures using the finite-difference time-domain (FDTD simulations. For metal coated dielectric conical structures, we observed field concentration at apex with the spatial size of 5nm (FWHM) and the electric field density increased by a factor of 170. And for metallic wedged structure coupled to silicon waveguides, we investigate a method of controlling superfocusing by changing the phase of waveguide modes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Surface plasmons / FDTD method / Superfocusing |
| Paper # | OME2008-44 |
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| Conference Information | |
| Committee | OME |
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| Conference Date | 2008/9/23(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Superfocusing of surface plasmons using tapered waveguide structures |
| Sub Title (in English) | |
| Keyword(1) | Surface plasmons |
| Keyword(2) | FDTD method |
| Keyword(3) | Superfocusing |
| 1st Author's Name | Kazuhiro YAMAMOTO |
| 1st Author's Affiliation | Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology (NICT)() |
| 2nd Author's Name | Kazuyoshi KURIHARA |
| 2nd Author's Affiliation | Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology (NICT) |
| 3rd Author's Name | Junichi TAKAHARA |
| 3rd Author's Affiliation | Department of Systems Innovation, Graduate School of Engineering Science, Osaka University |
| 4th Author's Name | Akira OTOMO |
| 4th Author's Affiliation | Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology (NICT) |
| Date | 2008-09-30 |
| Paper # | OME2008-44 |
| Volume (vol) | vol.108 |
| Number (no) | 225 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |