Excitation and Active Control of Propagating Surface Plasmon Polaritons in Graphene
Nano Letters2013Vol. 13(8), pp. 3698–3702
Citations Over TimeTop 1% of 2013 papers
Weilu Gao, Gang Shi, Zhong Jin, Jie Shu, Qi Zhang, Róbert Vajtai, Pulickel M. Ajayan, Junichiro Kono, Qianfan Xu
Abstract
We demonstrate the excitation and gate control of highly confined surface plasmon polaritons propagating through monolayer graphene using a silicon diffractive grating. The normal-incidence infrared transmission spectra exhibit pronounced dips due to guided-wave resonances, whose frequencies can be tuned over a range of ~80 cm(-1) by applying a gate voltage. This novel structure provides a way to excite and actively control plasmonic waves in graphene and is thus an important building block of graphene plasmonic systems.
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