Plasmonic Brewster Angle: Broadband Extraordinary Transmission through Optical Gratings
Plasmonic Brewster Angle: Broadband Extraordinary Transmission through Optical Gratings
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DOI：
10.1103/physrevlett.106.123902
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发表时间：
2011-03-23
影响因子：
8.6
通讯作者：
Bloemer, Mark J.
中科院分区：
文献类型：
--
作者：
Alu, Andrea;D'Aguanno, Giuseppe;Bloemer, Mark J.
通过金属光栅的异常光传输是基于波纹屏幕的集体共振的公认效应。基于等离子体共振，其带宽固有地窄，特别是对于厚屏幕和窄孔径。我们在这里介绍了一种不同的机制，以实现总传输通过一个不透明的屏幕，基于一个超宽带隧道，可以跨越从直流到可见光范围在一个给定的入射角。这种现象有效地代表了等离子体和不透明屏幕的布鲁斯特传输的等价物。
Extraordinary optical transmission through metallic gratings is a well established effect based on the collective resonance of corrugated screens. Being based on plasmonic resonances, its bandwidth is inherently narrow, in particular, for thick screens and narrow apertures. We introduce here a different mechanism to achieve total transmission through an otherwise opaque screen, based on an ultrabroadband tunneling that can span from dc to the visible range at a given incidence angle. This phenomenon effectively represents the equivalent of Brewster transmission for plasmonic and opaque screens.