| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Enhanced Light Narrow Transmission through Cascaded Metallic Structure with Periodic Aperture Arrays |
| YANG Hong-Yan1, ZHONG Yan-Ru1, XIAO Gong-Li2**, ZHANG Zhen-Rong3 |
1School of Computer Science and Engineering, Guilin University of Electronic Technology, Guilin 541004
2School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004
3School of Computer, Electronic and Information, Guangxi University, Nanning 530004
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| Cite this article: |
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YANG Hong-Yan, ZHONG Yan-Ru, XIAO Gong-Li et al 2012 Chin. Phys. Lett. 29 107303 |
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Abstract We present experimental and numerical studies on the enhanced light narrow transmission through cascaded Au/SiOxNy/Au aperture arrays by varying the refractive index and thickness of SiOxNy. It is found that the enhancement as well as narrowing of the optical transmission originates from the coupling role of surface plasmon polaritons. The results indicate that the transmission enhancement is highly dependent on the refractive index and thickness of SiOxNy. A higher transmission efficiency and narrower peak are obtained in Au/SiO2.1N0.3/Au structure with a small refractive index (1.6) and thin thickness (0.2 μm).
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Received: 05 January 2012
Published: 01 October 2012
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| PACS: |
73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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42.25.Bs
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(Wave propagation, transmission and absorption)
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