Singular analysis of Fano resonances in plasmonic nanostructures
Singular analysis of Fano resonances in plasmonic nanostructures
复制标题
等离子体纳米结构中法诺共振的奇异分析
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
N. Bonod
中科院分区：
文献类型：
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作者：
V. Grigoriev;S. Varault;G. Boudarham;B. Stout;J. Wenger;N. Bonod
通过将等离子体纳米结构的响应扩展到理想的发射和吸收模式，分析了二维周期阵列中等离子体纳米结构的散射特性。它示出，这些模式的频率确定的反射和透射光谱的形状以同样的方式，点状电荷的位置确定它们周围的电场。这有助于发展一个视觉解释的许多共振效应，发生由于重叠共振，和法诺干涉效应被认为是一个基本的例子。这种方法在复频率域中自然工作，并提供了一个系统的工具来分析，优化和设计各种应用的纳米结构的谐振特性。
The scattering properties of plasmonic nanostructures arranged in two-dimensional periodic arrays are analyzed by expanding their response into perfectly emitting and absorbing modes. It is shown that the frequencies of these modes determine the shape of the reflection and transmission spectra in the same way that the positions of point-like charges determine the electric field around them. This helps to develop a visual interpretation of many resonant effects which occur due to overlapping resonances, and the Fano interference effect is considered as a basic example. This approach works naturally in the domain of complex frequencies and provides a systematic tool to analyze, optimize, and engineer the resonant properties of nanostructures for various applications.