等离子体 Fabry-Pérot 腔模与磁等离子体的强耦合

Strong coupling between plasmonic Fabry-Pérot cavity mode and magnetic plasmon.

机构信息

Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, China.

出版信息

Opt Lett. 2013 May 15;38(10):1591-3. doi: 10.1364/OL.38.001591.

DOI:10.1364/OL.38.001591

Abstract

We demonstrate strong coupling between the Fabry-Pérot cavity plasmons and magnetic nanowire plasmons. The strong coupling leads to drastic enhancement of magnetic field intensity beneath a silver nanowire inside a metallic cavity. A Rabi splitting of 280 meV and a magnetic field intensity enhancement of 845 times the incident is achieved using the proposed geometry. The theoretical prediction agrees well with rigorous full wave simulations. The effect provides efficient tools for applications such as magnetic nonlinearity and magnetic sensors.

摘要

我们展示了法布里-珀罗腔等离子体激元和磁性纳米线等离子体之间的强耦合。这种强耦合导致金属腔体内的银纳米线下方的磁场强度得到了极大的增强。使用所提出的几何形状，实现了 280meV 的拉比分裂和 845 倍于入射强度的磁场强度增强。理论预测与严格的全波模拟吻合较好。该效应为磁性非线性和磁性传感器等应用提供了有效的工具。