Surface plasmon drag effect in a dielectrically modulated metallic thin film
Surface plasmon drag effect in a dielectrically modulated metallic thin film
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DOI：
10.1364/oe.20.001561
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发表时间：
2012-01-16
期刊：
影响因子：
3.8
通讯作者：
Ishihara, Teruya
中科院分区：
文献类型：
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作者：
Kurosawa, Hiroyuki;Ishihara, Teruya
我们对带有介质光栅的Au薄膜的光生电压（PIV）效应进行了实验和数值研究。我们观察到强烈增强的电压时，表面等离子体激元（SPP）被激发。发现Au膜中的电子被驱动到SPP的传播方向。我们首次用数值方法证明了散射力的存在很好地解释了实验结果。还阐明了这种效应可以归因于从SPP到Au膜中的自由载流子的动量转移。因此，我们观察到的效应可以被称为表面等离子体激元拖曳效应，类似于光子拖曳效应。(C)2012美国光学学会
We have experimentally and numerically investigated photoinduced voltage (PIV) effect across a Au film with a dielectric grating. We observed strongly enhanced voltage when surface plasmon polariton (SPP) is excited. It was found that electrons in the Au film are driven to the propagation direction of SPP. We have numerically shown that dissipative force called as scattering force well elucidates the experimental result for the first time. It is also clarified that this effect can be attributed to the momentum transfer from SPP to free carriers in the Au film. Thus the effect we observed can be called as surface plasmon drag effect in analogy with the photon drag effect. (C) 2012 Optical Society of America