期刊
APPLIED PHYSICS LETTERS
卷 99, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3643036
关键词
arrays; nanocomposites; polaritons; quadrupole interactions; surface plasmon resonance
资金
- State Key Program for Basic Research of China [2010CB630703]
- National Natural Science Foundation of China [10874079, 10804051]
- Anhui Provincial Natural Science Foundation [10040606Q48]
We present an experimental and theoretical study on the composite nanostructures composed of the LT-shaped metallic nanohole arrays. Multiple resonance transmission peaks are observed in the optical transmission spectra. By analyzing their electric field distributions on the interface, we infer the electric dipole and the electric quadrupole plasmonic resonances contribute to these transmission peaks. The electric quadrupole is a subradiant mode, which cannot be directly excited by the incident light. Here, we demonstrate that the surface plasmon polaritons can excite the electric quadrupole plasmonic resonance mode through the near-field interaction. (C) 2011 American Institute of Physics. [doi:10.1063/1.3643036]
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