论文标题
可调极化引起的FANO共振在堆叠的线网格跨面中
Tunable Polarization-Induced Fano Resonances in Stacked Wire-Grid Metasurfaces
论文作者
论文摘要
鉴于探索单层的跨额叶无法实现的外来光学效应，正在研究堆叠的元面积。在这封信中，我们从理论上证明了具有特定极化特性的金属网格元面积堆叠具有诱导可调的Fano共振的能力。开发的原始模型 - 将循环场方法与扩展的琼斯形式主义结合在一起 - 揭示了产生极化引起的FANO共振的基本原理。理论框架在实验性概念证明中使用市售的电线网格和Terahertz时域光谱仪进行了验证。这种未开发的可能性为通过使用堆叠的金属元面积实现和控制FANO共振的替代路径开辟了道路。此外，这些发现表明，极化可以用作具有增强和可调特性的光学谐振器设计的额外自由度。
Stacked metasurfaces are being investigated in light of exploring exotic optical effects that cannot be achieved with single-layered metasurfaces. In this Letter, we theoretically demonstrate that stacks of metallic wire-grid metasurfaces possessing specific polarization properties have the ability to induce tunable Fano resonances. The developed original model - combining a circulating field approach together with an extended Jones formalism - reveals the underlying principle that gives rise to the polarization-induced Fano resonances. The theoretical frame is validated in an experimental proof of concept using commercially available wire-grids and a terahertz time domain spectrometer. This unexplored possibility opens an alternative path to the realization and control of Fano resonances by using stacked metallic metasurfaces. Furthermore, these findings suggest that the polarization can be used as an additional degree of freedom for the design of optical resonators with enhanced and tunable properties.
