Influence of Electromagnetic Interactions on the Line Shape of Plasmonic Fano Resonances
Influence of Electromagnetic Interactions on the Line Shape of Plasmonic Fano Resonances
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DOI：
10.1021/nn203173r
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发表时间：
2011-11-01
期刊：
影响因子：
17.1
通讯作者：
Martin, Olivier J. F.
中科院分区：
文献类型：
--
作者：
Gallinet, Benjamin;Martin, Olivier J. F.
利用电磁场理论研究了支持Fano共振的等离子体纳米结构的光学性质。与Fano的原始工作相反，这个理论包括组成系统的材料中的损失。结果，得到了系统响应的更一般的公式，并得出了确定共振参数的一般结论。这些预测验证了表面积分数值计算在各种各样的等离子体纳米结构，包括支石墓，低聚物，光栅。这项工作提出了一个强大的和一致的分析等离子体Fano共振，并使其基于麦克斯韦方程的线形控制。以这种方式获得的对Fano共振的物理理解的见解将对设计具有特定光谱响应的等离子体系统具有极大的兴趣，这些系统用于传感和光学超材料等应用。
The optical properties of plasmonic nanostructures supporting Fano resonances are investigated with an electromagnetic theory. Contrary to the original work of Fano, this theory includes losses In the materials composing the system. As a result, a more general formula is obtained for the response of the system and general conclusions for the determination of the resonance parameters are drawn. These predictions are verified with surface integral numerical calculations In a broad variety of plasmonic nanostructures Including dolmens, oligomers, and gratings. This work presents a robust and consistent analysis of plasmonic Fano resonances and enables the control of their line shape based on Maxwell's equations. The insights into the physical understanding of Fano resonances gained this way will be of great Interest for the design of plasmonic systems with specific spectral responses for applications such as sensing and optical metamaterials.