金属表面穹顶形凸起与凹陷中等离激元现象的简单解析分析方法
Simple analytical approach to the analysis of plasmonic phenomena in dome-shaped protrusions and depressions on metal surfaces
AI总结：
本文提出一种简单解析模型，用于分析金属表面穹顶形纳米凸起与凹陷的等离激元现象，可计算极化电荷密度、近场及偶极矩修正，并通过全波数值模拟验证，适用于导波等离激元器件与光散射等研究。
摘要：
本文提出一种简单高效的解析模型，用于分析金属表面纳米尺度缺陷中产生的等离激元现象，特别是低纵横比的穹顶形凸起与凹陷。该模型通过一个简洁公式即可计算缺陷表面的极化电荷密度及其相关的等离激元近场，并准确考虑缺陷几何形状和入射光波参数。模型还在静电近似下有效纳入缺陷的共振特性，从而能够计算缺陷偶极矩对Born近似的修正。静电近似下得到的解析结果通过采用有限元方法的全波数值模拟进行了验证。所提出的解析方法对于建模与导波等离激元器件、微纳尺度光操控器件、超材料及混合光电电路发展相关的多种现象具有重要价值，同时也可用于解决光散射问题，尤其是涉及表面等离激元极化波的问题。
英文摘要：
A simple and efficient analytical model is proposed for analyzing plasmonic phenomena arising in nanoscale defects on metal surfaces, specifically low aspect ratio dome-shaped protrusions and depressions. The model enables the calculation, using a straightforward formula, of the polarization charge density on the defect surface and its associated plasmonic near-field, accurately accounting for the defect geometry and incident light wave parameters. It further effectively incorporates the resonant properties of the defects within the electrostatic approximation, making it possible to calculate the correction to the Born approximation for the defect dipole moment. The analytical results obtained under the electrostatic approximation are validated through full-wave numerical simulations utilizing the finite element method. The proposed analytical approach will be valuable for modeling diverse phenomena pertinent to the development of guided-wave plasmonic devices, micro- and nanoscale light manipulation devices, metamaterials, and hybrid optoelectronic circuits, as well as for addressing light scattering problems, especially those involving surface plasmon polariton waves.
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。
