Plasmon-negative refraction at the heterointerface of graphene sheet arrays.
Plasmon-negative refraction at the heterointerface of graphene sheet arrays.
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DOI：
10.1364/ol.39.005957
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发表时间：
2014-10
期刊：
影响因子：
3.6
通讯作者：
He-Tian Huang;B. Wang;H. Long;Kai Wang;P. Lu
中科院分区：
文献类型：
--
作者：
He-Tian Huang;B. Wang;H. Long;Kai Wang;P. Lu
We demonstrate negative refraction of surface plasmon polaritons (SPPs) at the heterointerface of two monolayer graphene sheet arrays (MGSAs) with different periods. The refraction angle is specifically related to the period ratio of the two MGSAs. By varying the incident Bloch momentum, the SPPs might be refracted in the direction normal to the heterointerface. Moreover, both positive and negative refraction could appear simultaneously. Because of the linear diffraction relation, the incident and refracted SPP beams experience diffraction-free propagation. The heterostructures composed of the MGSAs may find great applications in deep-subwavelength spatial light modulators, optical splitters, and switches.
