Two different transmission tunnels of light through double-layer gold nanohole arrays
Two different transmission tunnels of light through double-layer gold nanohole arrays
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DOI：
10.1088/0953-8984/20/41/415223
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发表时间：
2008-09
期刊：
影响因子：
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通讯作者：
Hongjian Li;Suxia Xie;Renlong Zhou;Qiong Liu;Xin Zhou;M. Yuan
中科院分区：
文献类型：
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作者：
Hongjian Li;Suxia Xie;Renlong Zhou;Qiong Liu;Xin Zhou;M. Yuan
采用时域有限差分法（FDTD）数值模拟了双层金纳米孔阵列的光传输增强效应。光传输不仅源于局域波导共振，而且由于周期性，还源于公认的表面等离子体共振。通过对电场分布图和电磁能量分布图的分析，揭示了两种不同谐振模式的传输特性。此外，我们还清楚地显示了两层金膜之间的波输运特性。
We numerically simulate the enhancement of optical transmission through the double-layer gold nanohole arrays by using the finite-difference time-domain (FDTD) method. The optical transmission originates not only from the localized waveguide resonance but also from the well-recognized surface plasmon resonance due to the periodicity. The transmission characteristic of the two different resonance modes is also revealed clearly by analyzing the maps of electric field and electromagnetic energy distribution. In addition, we also show clearly the wave transport characteristics between the two-layer gold films.