基于表面晶格共振的NiFe图案化纳米结构磁等离子体开关
Surface lattice resonance based magneto-plasmonic switch in NiFe patterned nano-structure
摘要：
在这项工作中，一个二维磁等离子体光栅结构相结合的材料与铁磁和等离子体特性的证明。NiFe复合铁磁材料作为具有可调物理特性的活性介质，Au金属作为等离子体激元激发层，是选择的材料。在这里，我们已经实验研究了主动控制的Au/NiFe双层膜的等离子体特性的作用下的外部磁场，以及系统的开关效应。利用铁磁材料的磁化翻转可以实现主动等离子体控制，为主动等离子体器件的发展开辟了一条新的途径。据我们所知，这是基于等离子体与磁光活性材料的耦合的磁光等离子体开关的第一次演示，其中响应时间估计在微秒的范围内。
英文摘要：
In this work, a 2D magneto-plasmonic grating structure combining materials with ferromagnetic and plasmonic properties is demonstrated. NiFe composite ferromagnetic material, as an active medium with tunable physical properties, and Au metal, as a plasmonic excitation layer, were the materials of choice. Here, we have experimentally investigated the active control of the plasmonic characteristics in Au/NiFe bilayer by the action of an external magnetic field, as well as the switching effect of the system. The active plasmonic control, can be achieved by the magnetization switching of the ferromagnetic material, opening a new path in the development of active plasmonic devices. To our best knowledge, this is the first demonstration of such a magneto-optical plasmonic switch based on the coupling of plasmons with magneto-optical active materials, in which the response time was estimated to be in the range of microseconds.
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