磁等离子体准晶
Magnetoplasmonic Quasicrystals
摘要：
纳米磁光材料的光共振特性为利用磁场实现光控制开辟了一条非常有效的途径，这对于通信和传感应用具有重要意义。然而，由于其谐振特性，它们的响应通常是窄带的。在这里，我们展示和研究一种新型的磁等离子体结构，磁等离子体准晶，它表现出独特的磁光响应。它由磁性介电膜覆盖的薄金层穿孔的狭缝形成斐波那契样的二元序列。横向磁光克尔效应（TMOKE）获得可控的多个等离子体相关共振，导致在宽频率范围内的磁光响应。宽带TMOKE是有价值的许多纳米光子学应用，包括光学传感，控制光，全光控制磁化等另一方面，TMOKE光谱是一个有效的工具，用于调查的特性等离子体准晶体。
英文摘要：
Nanostructured magneto-optical materials sustaining optical resonances open very efficient way for light control via magnetic field, which is of prime importance for telecommunication and sensing applications. However, usually their response is narrowband due to its resonance character. Here we demonstrate and investigate a novel type of the magnetoplasmonic structure, the magnetoplasmonic quasicrystal, which demonstrates unique magneto-optical response. It consists of the magnetic dielectric film covered by a thin gold layer perforated by slits forming a Fibonacci-like binary sequence. The transverse magneto-optical Kerr effect (TMOKE) acquires controllable multiple plasmon-related resonances resulting in a magneto-optical response in a wide frequency range. The broadband TMOKE is valuable for numerous nanophotonics applications including optical sensing, control of light, all-optical control of magnetization etc. On the other hand, TMOKE spectroscopy is an efficient tool for investigation of the peculiarities of plasmonic quasicrystals.
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