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Tunable Omnidirectional Surface Plasmon Resonance in Cylindrical Plasmonic Structure |
| WANG Yi1, WANG Bing1, ZHOU Zhi-Ping 2,3 |
| 1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 4300742State Key Laboratory on Advanced Optical Communication Systems and Networks, Peking University, Beijing 1008713School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA |
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| Cite this article: |
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WANG Yi, WANG Bing, ZHOU Zhi-Ping 2008 Chin. Phys. Lett. 25 4388-4390 |
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Abstract The tunable omnidirectional surface plasmon resonance in the optical range is theoretically demonstrated in a cylindrical plasmonic crystal by using rigorous coupled-wave analysis. The cylindrical plasmonic crystal consists of an infinite chain of two-dimensional cylindrical metal--dielectric-dielectric-metal structures. The dispersion relation of the cylindrical plasmonic crystal is obtained by calculating the absorptance as a function of a TM-polarized incident plane wave and its in-plane wave vector. The omnidirectional surface plasmon resonance can be tuned from UV region to visible region by adjusting the thickness of the cylindrical dielectric layers. The absorption spectrum of the infinite chain of nanocylinders is also investigated for comparison.
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| Keywords:
73.20.Mf
73.40.Sx
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Received: 12 September 2008
Published: 27 November 2008
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| PACS: |
73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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73.40.Sx
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(Metal-semiconductor-metal structures)
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