Strong coupling between surface plasmon polaritons and magnetic polaritons in an Au grating/dielectric/Au hybrid structure

Ruiyu Luo; Songzhi Wang; Wei Qiu; Leiming Zhou; Xiaoyun Jiang; Dongmei Li; Zhili Wang; Jigang Hu

doi:10.1117/12.2608094

8 July 2022 Strong coupling between surface plasmon polaritons and magnetic polaritons in an Au grating/dielectric/Au hybrid structure

Ruiyu Luo, Songzhi Wang, Wei Qiu, Leiming Zhou, Xiaoyun Jiang, Dongmei Li, Zhili Wang, Jigang Hu

Author Affiliations +

Proceedings Volume 12283, 2021 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 1228306 (2022) https://doi.org/10.1117/12.2608094
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

We have theoretically studied the strong coupling of the surface plasmon polaritons (SPP) and magnetic polaritons (MP) modes in an Au grating/dielectric/Au resonance structure in the near-infrared waveband. Our results show that SPP and MP modes can strongly interact with each other at the metal grating/dielectric/metal (MDM) interface, leading to a large Rabi splitting. We also find that the light absorptivity in the high- and low-frequency branches within the anticrossing region are abnormally different. Moreover, the simulation results indicate that strong SPP-MP coupling can be tuned by modulating the geometric parameters of the structure. The unique characteristics of strong coupling of SPP and MP modes in this simple MDM hybrid structure will be helpful in the design of various polaritonic devices.

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Ruiyu Luo, Songzhi Wang, Wei Qiu, Leiming Zhou, Xiaoyun Jiang, Dongmei Li, Zhili Wang, and Jigang Hu "Strong coupling between surface plasmon polaritons and magnetic polaritons in an Au grating/dielectric/Au hybrid structure", Proc. SPIE 12283, 2021 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 1228306 (8 July 2022); https://doi.org/10.1117/12.2608094

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