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Infrared antenna array based on nano-holes in ultrathin metallic films

Published online by Cambridge University Press:  02 August 2010

D. Li ,
Z. J. Zhang ,
F. Gao ,
Z. Wang ,
R. H. Fan ,
L. Y. Sun ,
R. L. Zhang  and
R. W. Peng
D. Li
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
Z. J. Zhang
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
F. Gao
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
Z. Wang
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
R. H. Fan
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
L. Y. Sun
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
R. L. Zhang
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
R. W. Peng*
Affiliation:
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China
*
[email protected]
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Abstract

In this work, we investigate the emission of the nano-hole array in an ultrathin silver film at infrared regime. It is shown that when the incident light illuminates the nano-hole array, the localized surface plasmons are excited and serve as electric dipoles. The emission of the nano-hole array presents a strong directivity. The maximum radiation is located at infrared regime, and it can be tuned by the period of the nano-hole array, the incidence angle and the polarization of the excitation light. These findings extend our understandings of optical property of metallic nano-structures and provide a unique way to achieve infrared antenna arrays, which may achieve potential applications in photovoltaics and telecommunication.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 51 , Issue 3: Focus on Flexible Organic Electronics , September 2010 , 30602
Copyright
© EDP Sciences, 2010

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