期刊
JOURNAL OF APPLIED PHYSICS
卷 116, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4897198
关键词
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资金
- Spanish Ministry of Economy and Competitiveness [CSD2008-00023, MAPS MAT2011-29194-C02-01]
- Comunidad de Madrid [S2009/TIC-1476]
We have analysed the effect that holes have on the properties of propagative surface plasmon modes in semitransparent nanoperforated Au films. The modes have been excited in Kretschmann configuration. Contrary to continuous films, where only one mode is excited, two modes are observed in Au nanohole array. The origin of this different behavior is discussed using effective optical properties for the nanoperforated films. The presence of the holes affects the effective optical constants of the membranes in two ways: it changes the contribution of the free electrons, and it gives rise to a localized transition due to a hole induced plasmon resonance. This localized transition interacts with the propagative surface plasmon modes, originating the two detected modes. (C) 2014 AIP Publishing LLC.
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