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Vector plasmonic lattice solitons in nonlinear graphene-pair arrays

机译:非线性石墨烯对阵列中的矢量等离子体激元孤子

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We investigate the vector plasmonic lattice solitons (PLSs) in nonlinear graphene-pair arrays (GPAs) consisting of periodically arranged double graphene sheets, which are spatially separated. There are two dispersion bands for the Bloch modes in the array due to the coupling of surface plasmon polaritons (SPPs) between the graphene pairs. The vector PLSs composed of two components originate from the nonlinear interaction of Bloch modes in different bands. Both components undergo mutual self-trapping through the balance between diffraction and self-focusing nonlinearity of graphene. Thanks to the strong confinement of SPPs, the vector PLSs can be squeezed into a lateral width of similar to lambda/100. The study provides a promising approach to all-optical control on a deep-subwavelength scale. (C) 2016 Optical Society of America
机译:我们研究了由周期性排列的双石墨烯片组成的非线性石墨烯对阵列(GPA)中的矢量等离激元晶格孤子(PLS),这些双石墨烯片在空间上是分开的。由于石墨烯对之间的表面等离振子极化子(SPP)耦合,阵列中的Bloch模有两个色散带。由两个分量组成的矢量PLS源自不同频带内Bloch模式的非线性相互作用。通过石墨烯的衍射和自聚焦非线性之间的平衡,两个组件都经历了相互自陷。得益于SPP的严格限制,可以将矢量PLS压缩为类似于lambda / 100的横向宽度。该研究为深亚波长范围的全光控制提供了一种有前途的方法。 (C)2016美国眼镜学会

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