Rabi Oscillations of Plasmonic Supermodes in Graphene Multilayer Arrays
Rabi Oscillations of Plasmonic Supermodes in Graphene Multilayer Arrays
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DOI：
10.1109/jstqe.2016.2537205
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发表时间：
2017
影响因子：
4.9
通讯作者：
Feng Wang;Chengzhi Qin;B. Wang;H. Long;Kai Wang;P. Lu
中科院分区：
文献类型：
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作者：
Feng Wang;Chengzhi Qin;B. Wang;H. Long;Kai Wang;P. Lu
我们研究了由空间分离的石墨烯多层石墨烯组成的石墨烯波导阵列中表面等离子激元在每个周期内的拉比振荡。在石墨烯多层结构中，每个周期产生的等离子体超模应该相互耦合，从而产生石墨烯多层阵列（GMA）中的Bloch模式。通过在石墨烯之间引入介电常数的空间调制，可以发生直接和间接的跃迁，从而导致不同波段的共传播和反传播布洛赫模式的交叉转换。由于超模的数量取决于GMA每个周期中石墨烯层的数量，因此等离子体布洛赫模式应该有多个带。因此，跃迁可以发生在任何不同波段的模式之间。这项研究可能会在基于石墨烯的模式转换器、开关和调制器中找到很大的应用。
We investigate Rabi oscillations of surface plasmon polaritons in the graphene waveguide array consisting of spatially separated graphene multilayers in each period. The plasmonic supermodes generated in the graphene multilayers of each period should couple to each other, yielding Bloch modes in the graphene multilayer array (GMA). By introducing spatial modulation of dielectric permittivity between graphene, both direct and indirect transitions may occur, resulting in the cross conversion of both co- and counter-propagating Bloch modes in different bands. As the number of supermodes depends on that of graphene layers in each period of the GMA, there should be multiple bands for the plasmonic Bloch modes. Thus, the transition could occur between the modes in any distinct bands. The study may find great applications in graphene-based mode converters, switches, and modulators.