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arXiv 2004.10295physics.optics
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叠层线栅超表面中的可调谐偏振Fano共振

Tunable Polarization-Induced Fano Resonances in Stacked Wire-Grid Metasurfaces

Xavier Romain, Riccardo Degl'Innocenti, Fadi I. Baida, Philippe Boyer

摘要:

堆叠超颖表面正在研究探索奇异的光学效果,不能实现与单层超颖表面。在这封信中,我们从理论上证明,堆叠的金属线栅超颖表面具有特定的偏振特性,有能力诱导可调法诺共振。开发的原始模型-结合循环场的方法与扩展的琼斯形式主义-揭示了引起极化引起的Fano共振的基本原理。理论框架的实验验证的概念,使用市售的线栅和太赫兹时域光谱仪。这种未探索的可能性开辟了一条通过使用堆叠的金属超颖表面来实现和控制法诺共振的替代路径。此外,这些研究结果表明,偏振可以作为一个额外的自由度的光学谐振腔的设计与增强和可调谐的性能。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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