Braïk Macilia, Geronimi-Jourdain Théo, Lau-Truong Stéphanie, Belkhir Abderrahmane, Gam-Derouich Sarra, Chevillot-Biraud Alexandre, Mangeney Claire, Félidj Nordin
ITODYS, CNRS, Université Paris Cité, F-75006 Paris, France.
LPCQ, Université Mouloud Mammeri, BP 17 RP, 15000 Tizi-Ouzou, Algeria.
Nanophotonics. 2023 Apr 24;12(12):2179-2188. doi: 10.1515/nanoph-2023-0121. eCollection 2023 Jun.
When assembled in periodic arrangements, metallic nanostructures (NSs) support plasmonic surface lattice (SL) resonances resulting from long-range interactions these surface lattice resonances differ radically from localized surface plasmon (LSP). Similarly to the hybridization of LSP resonances, observed in short-range interactions, we demonstrate the possibility to generate a hybridization of surface lattice (SL) plasmon resonances, by the excitation of grazing order diffraction within the metasurface. This hybridization leads to the emergence of and modes. If hybridization of LSP modes has been widely described in recent literature, there is still no experimental proof-of-concept reporting such hybridization with SL plasmon resonances. We fill this gap in the present paper by considering surfaces made of binary arrays with unit cells made of two gold disks of distinct diameters. We demonstrate the possibility to maximize or cancel the interaction between the hybridized SL resonances by simply controlling the distance between particles. All our experimental results are supported by FDTD calculations. The hybridization of SL modes results in much richer hybridization scenario in terms of wavelength and quality factor control, compared to a hybridization of LSP in a short-range configuration. It offers unprecedented opportunities to generate innovative optical devices, with high flexible tunability.
当以周期性排列组装时，金属纳米结构（NSs）支持由长程相互作用产生的表面等离子体晶格（SL）共振，这些表面晶格共振与局域表面等离子体（LSP）有根本区别。与在短程相互作用中观察到的LSP共振杂交类似，我们证明了通过激发超表面内的掠入射级衍射来产生表面晶格（SL）等离子体共振杂交的可能性。这种杂交导致了 和 模式的出现。如果LSP模式的杂交在最近的文献中已有广泛描述，那么仍然没有实验概念验证报告这种与SL等离子体共振的杂交。我们在本文中通过考虑由具有不同直径的两个金盘组成的单元胞的二元阵列制成的表面来填补这一空白。我们证明了通过简单地控制粒子之间的距离，可以最大化或消除杂交SL共振之间的相互作用。我们所有的实验结果都得到了FDTD计算的支持。与短程配置中的LSP杂交相比，SL模式的杂交在波长和品质因数控制方面导致了更丰富的杂交情况。它为制造具有高灵活可调性的创新光学器件提供了前所未有的机会。
