Hybrid graphene-plasmon gratings
Hybrid graphene-plasmon gratings
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DOI：
10.1063/5.0152664
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发表时间：
2023-06
影响因子：
3.2
通讯作者：
T. Guo;C. Argyropoulos
中科院分区：
文献类型：
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作者：
T. Guo;C. Argyropoulos
石墨烯可以支持表面等离子体，与通常的基于金属的等离子体结构相比，具有更高的限制、更低的传播损耗和实质上更可调谐的响应。有趣的是，石墨烯中的等离子体激元可以与放置在其附近的纳米结构和光栅强烈耦合，形成新的混合系统，可以为研究更复杂的等离子体激元现象提供平台。在这个角度来看，高度受限的石墨烯等离子体激元的激发和它们与金属或电介质光栅的强耦合进行分析。我们强调这些新的混合系统在有效控制光-物质相互作用方面的灵活性，这得益于石墨烯等离子体激元和其他外部共振模式之间的相互作用。混合石墨烯-等离子体激元光栅系统提供具有增强的场分布的独特的可调谐等离子体激元共振。他们展示了一种新的路线，以实现实际的新兴应用，包括非互易器件，等离子体开关，完美的吸收体，非线性结构，光电探测器和光学传感器。
Graphene can support surface plasmons with higher confinement, lower propagation loss, and substantially more tunable response compared to usual metal-based plasmonic structures. Interestingly, plasmons in graphene can strongly couple with nanostructures and gratings placed in its vicinity to form new hybrid systems that can provide a platform to investigate more complicated plasmonic phenomena. In this Perspective, an analysis on the excitation of highly confined graphene plasmons and their strong coupling with metallic or dielectric gratings is performed. We emphasize the flexibility in the efficient control of light–matter interaction by these new hybrid systems, benefiting from the interplay between graphene plasmons and other external resonant modes. The hybrid graphene-plasmon grating systems offer unique tunable plasmonic resonances with enhanced field distributions. They exhibit a novel route to realize practical emerging applications, including nonreciprocal devices, plasmonic switches, perfect absorbers, nonlinear structures, photodetectors, and optical sensors.