Díaz-Valencia Brayan Fernando, Moncada-Villa Edwin, Gómez Faustino Reyes, Porras-Montenegro Nelson, Mejía-Salazar Jorge Ricardo
Departamento de Física, Universidad del Valle, A.A., Cali 25360, Colombia.
Escuela de Física, Universidad Pedagógica y Tecnológica de Colombia, Avenida Central del Norte, Tunja 39115, Colombia.
Molecules. 2022 Aug 20;27(16):5312. doi: 10.3390/molecules27165312.
We demonstrate a concept for the giant enhancement of the transverse magneto-optical Kerr effect (TMOKE) using bulk plasmon polariton (BPP) modes in non-magnetic multilayer hyperbolic metamaterials (HMMs). Since the BPP modes are excited through the attenuated total reflection (ATR) mechanism, using a Si-based prism-coupler, we considered a single dielectric magneto-optical (MO) spacer between the prism and the HMM. The working wavelength was estimated, using the effective medium approach for a semi-infinite dielectric-plasmonic multilayer, considering the region where the system exhibits type II HMM dispersion relations. Analytical results, by means of the scattering matrix method (SMM), were used to explain the physical principle behind our concept. Numerical results for giant TMOKE values (close to their maximum theoretical values, ±1) were obtained using the finite element method (FEM), applying the commercial software COMSOL Multiphysics. Our proposal comprises a simple and experimentally feasible structure that enables the study of MO phenomena in HMMs, which may find application in future nanostructured magnetoplasmonic metamaterials for active nanophotonic devices.
我们展示了一种利用非磁性多层双曲超材料（HMM）中的体等离激元极化激元（BPP）模式极大增强横向磁光克尔效应（TMOKE）的概念。由于BPP模式是通过衰减全反射（ATR）机制激发的，我们使用基于硅的棱镜耦合器，在棱镜和HMM之间考虑了一个单一的介电磁光（MO）间隔层。使用半无限介电 - 等离子体多层的有效介质方法，考虑系统呈现II型HMM色散关系的区域，估计了工作波长。借助散射矩阵方法（SMM）的分析结果用于解释我们概念背后的物理原理。使用有限元方法（FEM）并应用商业软件COMSOL Multiphysics获得了巨大TMOKE值（接近其最大理论值±1）的数值结果。我们的提议包括一个简单且实验上可行的结构，该结构能够研究HMM中的磁光现象，这可能在未来用于有源纳米光子器件的纳米结构磁等离子体超材料中找到应用。
