Graphene Plasmon Waveguiding and Hybridization in Individual and Paired Nanoribbons
Graphene Plasmon Waveguiding and Hybridization in Individual and Paired Nanoribbons
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DOI：
10.1021/nn2037626
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发表时间：
2012-01-01
期刊：
影响因子：
17.1
通讯作者：
Javier Garcia de Abajo, F.
中科院分区：
文献类型：
--
作者：
Christensen, Johan;Manjavacas, Alejandro;Javier Garcia de Abajo, F.
与贵金属等离子体激元相比，掺杂石墨烯中的等离子体激元表现出相对大的限制和长的寿命。在这里，我们研究的传播特性的等离子体引导沿着个人和相互作用的石墨烯纳米带。除了通过静电门控的可调谐性之外，介电环境和相互作用波导的相对布置提供了控制这些激励的附加手柄。等离子体激元相互作用和杂交对相邻对齐的丝带被证明是足够强大的等离子体激元场分布产生显着的修改。我们引入了一个普遍的标度律，大大简化了分析和理解这些等离子体。我们的工作为构建石墨烯等离子体激元电路提供了基础，这些电路可用于未来的紧凑型等离子体激元器件，在光信号处理、红外传感和量子信息技术方面具有潜在的应用前景。
Plasmons in doped graphene exhibit relatively large confinement and long lifetime compared to noble-metal plasmons. Here, we study the propagation properties of plasmons guided along individual and interacting graphene nanoribbons. Besides their tunability via electrostatic gating, an additional handle to control these excitations Is provided by the dielectric environment and the relative arrangement of the interacting waveguides. Plasmon interaction and hybridization in pairs of neighboring aligned ribbons are shown to be strong enough to produce dramatic modifications in the plasmon field profiles. We introduce a universal scaling law that considerably simplifies the analysis an understanding of these plasmons. Our work provides the building blocks to construct graphene plasmon circuits for future compact plasmon devices with potential application to optical signal processing, infrared sensing, and quantum information technology.