在可见光频率下，磁共振与传播表面等离激元之间的强耦合。

Strong coupling between magnetic resonance and propagating surface plasmons at visible light frequencies.

机构信息

Department of Physics, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Xiamen University, Xiamen 361005, China.

State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.

出版信息

J Chem Phys. 2020 Jan 7;152(1):014702. doi: 10.1063/1.5133942.

DOI:10.1063/1.5133942

PMID:31914769

Abstract

Light-matter interactions in nanostructures have shown great potential in physics, chemistry, surface science, materials science, and nanophotonics. Herein, for the first time, the feasibility of strong coupling between plasmon-induced magnetic resonant and propagating surface plasmonic modes at visible light frequencies is theoretically demonstrated. Taking advantage of the strong coupling between these modes allowed for a narrow-linewidth hybrid mode with a huge electromagnetic field enhancement to be acquired. This work can serve as a promising guide for designing a platform with strong coupling based on magnetic resonance at visible and even ultraviolet light frequencies and also offers an avenue for further exploration of strong light-matter interactions at the nanoscale.

摘要

纳米结构中的光物质相互作用在物理学、化学、表面科学、材料科学和纳米光子学领域展现出了巨大的潜力。在此，我们首次从理论上证明了在可见光频率下，等离子体激元诱导的磁共振与传播表面等离激元模式之间发生强耦合的可行性。利用这些模式之间的强耦合，可以获得具有窄线宽的混合模式，同时伴随着巨大的电磁场增强。这项工作可以为设计基于可见光甚至紫外光频率下磁共振的强耦合平台提供有前景的指导，也为在纳米尺度上进一步探索强光物质相互作用提供了途径。