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Hybrid metasurface comprising epsilon-near-zero material for double transparent windows in optical communication band
Optical Materials ( IF 3.9 ) Pub Date : 2021-01-09 , DOI: 10.1016/j.optmat.2021.110802
Min Guo , Lirong Huang , Wenbing Liu , Jifei Ding

Metasurfaces with multiple transparent windows are highly desired and epsilon-near-zero (ENZ) materials offer a good platform for different coupling effects. We propose a hybrid metasurface composed of an indium tin oxide (ITO) nanolayer and a plasmonic metasurface. This device can support two kinds of different coupling effects to achieve double transparent windows in communication band. ITO behaves as an ENZ material and can support an ENZ mode when the real permittivity crosses zero (occurring at about 1.55 μm). In addition to electromagnetic induced transparency (EIT) at 1.31 μm supported by the plasmonic metasurface, another transparent window at 1.55 μm is produced by strongly coupling between the ENZ mode and the plasmonic metasurface. Our works provide a simple way to micro-nano device for multi-transparent windows, and may find applications in filters and sensors.



中文翻译:

包含超零ε材料的混合超表面,用于光通信带中的双透明窗口

非常需要具有多个透明窗口的超颖表面,并且ε接近零(ENZ)材料为不同的耦合效果提供了良好的平台。我们提出了由铟锡氧化物(ITO)纳米层和等离子超表面组成的混合超表面。该设备可以支持两种不同的耦合效果,以在通信频段中实现双透明窗口。ITO表现为ENZ材料,并且在实际介电常数为零(约1.55μm时)时可以支持ENZ模式。除了由等离子超表面支持的1.31μm的电磁感应透明性(EIT),通过ENZ模式与等离子超表面之间的强耦合还产生了另一个1.55μm的透明窗口。我们的作品提供了一种用于多透明窗口的微纳米设备的简单方法,

更新日期:2021-01-10
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