Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3010741
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Funding
- NSFC [10625417, 50672035, 10874068]
- MOST of China [2004CB619005, 2006CB921804]
- ME of China
- Jiangsu Province [NCET-05-0440, BK2008012]
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We show here that the plasmonic array based on nanoapertures in ultrathin silver film radiates at optical frequency and behaves as an optical antenna array (OAA). The far-field radiation originates from the coherent superposition of plasmonic emissions on each bank of the aperture. The radiation of OAA presents a strong directivity, which depends on the in-plane rotation of aperture array, and on the polarization and incidence angle of the excitation light as well. We suggest that these features have potential applications in photovoltaics, light-emitting devices, and optical sensors. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3010741]
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