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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >High Q factor propagating plasmon modes based on low-cost metals
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High Q factor propagating plasmon modes based on low-cost metals

机译:基于低成本金属的高Q因子传播等离子体激元模式

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摘要

A hybrid plasmonic-photonic crystal consisting of a low-cost metal (Al or Cu) covered by self-assembly polystyrene sub-micro sphere arrays is fabricated. The angle-resolved reflection spectra show the existence of propagating optical surface modes in the structure. Especially, under normal incidence, five surface modes can be observed clearly. With the help of theoretical calculation, the origin of surface resonance modes is confirmed. From both the experiment and simulation, the surface plasmon modes supported by this structure possess high Q factors, which are comparable with those of the modes based on noble metals. Moreover, with a dielectric layer deposited on the top of the structure, its potential application for surface plasma polariton sensors is proposed.
机译:制作了由等价自组装聚苯乙烯亚微球阵列覆盖的低成本金属(Al或Cu)组成的等离激元光子混合晶体。角度分辨反射光谱表明结构中存在传播的光学表面模式。特别是在法线入射下,可以清楚地观察到五个表面模式。借助理论计算,可以确定表面共振模式的起源。从实验和仿真两方面来看,这种结构所支持的表面等离激元模式具有较高的Q因子,与基于贵金属的模式等价。此外,通过在结构顶部沉积介电层,提出了其在表面等离子体极化传感器中的潜在应用。

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