表面等离激元极化激元干涉形成涡旋。
Formation of vortices by interference of surface plasmon polaritons.
作者信息
Dzedolik Igor V, Pereskokov Vladislav
出版信息
J Opt Soc Am A Opt Image Sci Vis. 2016 May 1;33(5):1004-9. doi: 10.1364/JOSAA.33.001004.
The TM-mode of surface plasmon polaritons (SPPs) can be excited at the interface of a metal layer and a dielectric medium. The E-mode of the SPPs is excited due to reflection of the TM-mode from the boundary of inhomogeneity in the metal layer. The interference of these modes leads to the formation of the SPP vortices in the points of minima of the mode field in some components of the Poynting vector of the SPP. The SPP interference vortex pattern changes depending on the curvature of the boundary of inhomogeneity in the metal layer, and the vortices appear and disappear in the components of the Poynting vector.
表面等离激元极化激元（SPPs）的横磁（TM）模式可在金属层与电介质介质的界面处被激发。由于TM模式在金属层中不均匀性边界处的反射，SPPs的横电（E）模式被激发。这些模式的干涉导致在SPP的坡印廷矢量某些分量的模式场最小值点处形成SPP涡旋。SPP干涉涡旋图案会根据金属层中不均匀性边界的曲率而变化，并且涡旋在坡印廷矢量的分量中出现和消失。
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