From local to nonlocal high-Q plasmonic metasurfaces

2023/11/22 by Yao Liang, Liang, Yao, Din Ping Tsai +3 · 9 citations
Materials Science · Engineering · #Metamaterials and Metasurfaces Applications #Plasmonic and Surface Plasmon Research #Advanced Antenna and Metasurface Technologies

paper · pdf · doi:10.48550/arxiv.2311.13452

Abstract

The physics of bound states in the continuum (BICs) allows to design and demonstrate optical resonant structures with large values of the quality factor (Q-factor) by employing dielectric structures with low losses. However, BIC is a general wave phenomenon that should be observed in many systems, including the metal-dielectric structures supporting plasmons where the resonances are hindered by losses. Here we develop a comprehensive strategy to achieve high-Q resonances in plasmonic metasurfaces by effectively tailoring the resonant modes from local and nonlocal regimes.

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