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首页> 外文期刊>Optical Materials >Multispectral broadband PIT and Fano resonance in skewed dipolar metasurface
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Multispectral broadband PIT and Fano resonance in skewed dipolar metasurface

机译：倾斜偶极子表面的多光谱宽带PIT和Fano共振

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摘要

The dipolar charge distribution are most common phenomenon behind the electromagnetic radiating elements and antennas. Plasmonic nanostructures are used to induce nanoscale dipolar resonances when coupled to incident light. It is interesting to investigate the effect of skewness in the conventional dipolar resonances, which is introduced through geometrical effects in nanostructures. Here, S-shaped skewed dipolar nanostructure is used to add skewness to the dipole modes and therefore induce plasmon hybridization effects between bright and dark plasmon modes, leading to multispectral broadband plasmon induced transparency (PIT) and Fano resonances. Additionally, effective group index of the skewed dipole metasurface is retrieved and is found to be very high within the PIT window suggesting its potential use in slow light applications.
机译：偶极电荷分布是电磁辐射元件和天线背后最常见的现象。当耦合到入射光时，等离子纳米结构用于诱导纳米级偶极共振。研究偏斜在常规偶极共振中的影响是很有趣的，这是通过纳米结构中的几何效应引入的。在这里，S形歪斜偶极子纳米结构用于增加偶极子模式的偏斜度，从而在明亮和黑暗等离激元模式之间引发等离激元杂交效应，从而导致多光谱宽带等离激元诱导的透明性（PIT）和Fano共振。另外，偏斜偶极子超表面的有效基团指数被检索到，并且在PIT窗口内发现很高，表明其在慢光应用中的潜在用途。

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