Anomalous Light Transmission from Plasmonic-Capped Nanoapertures
Anomalous Light Transmission from Plasmonic-Capped Nanoapertures
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DOI：
10.1021/nl103408h
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发表时间：
2011-03-01
期刊：
影响因子：
10.8
通讯作者：
Okamoto, Hiromi
中科院分区：
文献类型：
--
作者：
Imura, Kohei;Ueno, Kosei;Okamoto, Hiromi
我们报告了一个不透明屏幕上的纳米孔的异常光传输现象时，孔径是覆盖着一个不透明的帽。在传统的光学系统中，当孔径被覆盖时，光透射必须降低。然而，我们发现，当纳米盘在等离子体共振的波长剂量下靠近孔径时，光透射增强。这种效应甚至发生在圆盘大于孔径时。
We report an anomalous light transmission phenomenon for a nanoaperture on an opaque screen when the aperture is covered with an opaque cap. In conventional optics, light transmission must decrease when the aperture is capped. However, we found that light transmission is enhanced when the nanodisk is in close proximity to the aperture at a wavelength dose to the plasmon resonance. This effect even occurs when the disk is larger than the aperture.