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Direct method to control surface plasmon polaritons on metal surfaces

机译:控制金属表面的表面等离激元极化子的直接方法

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The manipulation of surface plasmon polaritons (SPPs) on metal surfaces is an important aspect in the design of ultra-compact integrated microano optical systems. We present a direct method for the easy, yet accurate design of complicated groove patterns to control SPPs traveling on metal surfaces, using a surface electromagnetic wave holography method, based on the Huygens-Fresnel principle. SPPs are scattered by these deliberately and appropriately determined groove patterns and interfere with each other to form new paths with desire. Two devices are demonstrated, with predesignated functionalities fully implemented by the designed plasmonic holographic structures, according to the finite-difference time-domain simulations. The results strongly indicate that this direct method is effective, efficient, and user friendly in its application to control SPPs on metal surfaces.
机译:在金属表面上的表面等离激元极化子(SPPs)的操纵是设计超紧凑集成微/纳光学系统的重要方面。我们提出了一种简单的方法,用于简单而准确地设计复杂的凹槽图案,以基于惠更斯-菲涅耳原理的表面电磁波全息方法来控制在金属表面上行进的SPP。这些有意和适当确定的凹槽图案会分散SPP,并相互干扰以形成新的路径。根据有限差分时域仿真,展示了两种设备,这些设备具有预先设计的功能,这些功能完全由设计的等离子体全息结构实现。结果强烈表明,这种直接方法在控制金属表面SPP的应用中是有效,高效和用户友好的。

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