Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3456377
Keywords
composite materials; numerical analysis; surface plasmons
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Funding
- 973 Project of China [2007CB310408]
- Major Project of Tianjin Sci-Tech Support Program [8ZCKFZC28000]
- Research Fund for the Doctoral Program of Higher Education [200800560026]
- Tianjin University
- U.S. National Science Foundation [ECCS-0601574, ECCS-0725764]
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We report the coupling between surface plasmons and dipole-localized surface plasmons in a composite hole-patch structure at terahertz frequencies. The coupling is found to be changed by increasing the inner patch size, which causes prominent resonance frequency shift in the enhanced transmission. The experimental results show good agreement with numerical simulation. The study clarifies well the nature of coupling between surface plasmons and dipole-localized surface plasmons and is thus of help to identify the role of surface plasmons in the enhanced transmission observed in subwavelength metallic structures. (C) 2010 American Institute of Physics. [doi:10.1063/1.3456377]
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