Manipulating Surface Plasmons Propagation Using Ultra-Compact and Non-Dielectric Designs
Manipulating Surface Plasmons Propagation Using Ultra-Compact and Non-Dielectric Designs
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DOI：
10.1109/metamaterials49557.2020.9285072
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发表时间：
2020-09
期刊：
影响因子：
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通讯作者：
J. Riley;N. Healy;V. Pacheco-Peña
中科院分区：
文献类型：
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作者：
J. Riley;N. Healy;V. Pacheco-Peña
本文提出了一种利用纯金属等离子体结构操纵和控制表面等离子体传播的方法。在我们的方法中，我们使用半无限银块插入另一个由铑制成的半无限介质。为了设计本文研究的结构，考虑到表面等离子体在具有有效折射率的空气-金属界面传播，利用了有效介质的概念。在这里，我们设计、演示并评估了一种能够将入射表面等离子体聚焦到单个焦点上的平凸透镜。
The work presents a method capable of manipulating and controlling the propagation of surface plasmons using plasmonic structures composed of only metals. In our approach, we make use of a semi-infinite silver block inserted into another semi-infinite medium made of rhodium. To design the structures here studied, the effective medium concept is exploited by considering that surface plasmons propagate at the air-metal interface with an effective refractive index. Here we design, demonstrate and evaluate a plano-convex lens with the ability to focus the incident surface plasmons onto a single focal spot.