表面等离子体激元耦合到自由空间中光束的研究

发布时间：2018-06-29 02:32

本文选题：表面光学 + 表面等离子体　；参考：《激光与光电子学进展》2017年04期

【摘要】：在光学集成中,金属表面的等离子体传输控制非常重要。应用表面波全息法设计结构控制表面等离子体波耦合到自由空间中的光波。模拟金属表面等离子波束与自由空间中目标光束的标量叠加,得到干涉光强。在光强极大值的地方刻蚀凹槽,获得凹槽结构。当表面等离子波入射到设计的结构中,凹槽散射等离子体波并在自由空间中进行叠加,得到所需的光束。利用此原理,在金属表面设计了两个结构,将传输的等离子体波耦合到自由空间中,汇聚于指定的一点或者两点。利用时域有限差分法模拟验证了此原理的可行性。这种耦合方式可以作为解决表面等离子体集成光路中探测问题的一种方案,将传输的表面等离子体信号耦合到自由空间,然后利用传统光电探测设备探测。
[Abstract]:In optical integration, plasma transport control on metal surface is very important. The surface wave holographic method is used to design the structure controlled surface plasma wave coupled to the light wave in the free space. The interference intensity is obtained by simulating the scalar superposition of the metal surface plasma beam with the target beam in free space. The groove structure is obtained by etching the grooves at the maximum of light intensity. When the surface plasma wave is incident into the designed structure, the groove scatters the plasma wave and superposes the plasma wave in the free space to obtain the desired beam. Using this principle, two structures are designed on the metal surface to couple the transmitted plasma waves into the free space and converge at a specified point or two points. The feasibility of this principle is verified by finite difference time domain simulation. This coupling method can be used as a solution to the problem of detection in the integrated optical path of surface plasma. The transmitted surface plasma signal is coupled to the free space, and then the conventional photoelectric detection equipment is used to detect the signal.
【作者单位】：贵州大学物理学院;
【基金】：贵州省科技合作计划(黔科合LH字[2015]7642)
【分类号】：O53

【相似文献】