Plasmonic interactions between a perforated gold film and a thin gold film |
| |
Authors: | Zhou Xin Li Hong-Jian Xie Su-Xi Fu Shao-Li Xu Hai-Qing and Wu Jin-Jun |
| |
Institution: | College of Physics Science and Technology, Central South University, Changsha 410083, China; College of Materials Science and Engineering, Central South University, Changsha 410083, China |
| |
Abstract: | Based on the finite difference time domain method, we investigated theoretically the optical properties and the plasmonic interactions between a gold film perforated with periodic sub-wavelength holes and a thin gold film. We showed that the plasmon resonant energies and intensities depend strongly on the thicknesses of the two films and the lattice constant. Based on the distributions of normal electric field component Ez, tangential electric field component Ey and total energy, we showed that the optical transmission is due to the collaboration of the localized waveguide resonance, the surface plasmon resonance and the coupling of the flat-surface plasmon of the two layers. |
| |
Keywords: | plasmonic interaction localized waveguide resonance surface plasmon resonance surface plasmon coupling |
本文献已被 CNKI 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|