等手征雕塑薄膜中金属层对多表面等离子体激元的激发
Excitation of multiple surface plasmon-polaritons by a metal layer inserted in an equichiral sculptured thin film
摘要：
在Sarid组态下，利用传输矩阵方法研究了等手征金属层缺陷薄膜对多重表面等离子体激元的激发.在p偏振平面波的光吸收中，将多个SPP模与波导模区分开来.通过计算时均坡印廷矢量，研究了多个SPP波的局部化程度。结果表明，该结构可以在金属芯的两个界面同时激发出长程和短程SPP波，具有广泛的传感应用前景。
英文摘要：
Excitation of multiple surface plasmon-polaritons(SPPs) by an equichiral sculptured thin film with a metal layer defect was studied theoretically in the Sarid configuration, using the transfer matrix method. Multiple SPP modes were distinguished from waveguide modes in optical absorption for p- polarized plane wave. The degree of localization of multiple SPP waves was investigated by calculation of the time averaged Poynting vector. The results showed that the long-range and short-range SPP waves can simultaneously be excited at both interfaces of metal core in this proposed structure which may be used in a broad range of sensing applications.
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