Numerical investigation of the enhanced unidirectional surface plasmon polaritons generator

被引：1
|
作者：
Zhang Zhi-Dong [1 ]
Wang Hong-Yan [1 ]
Zhang Zhong-Yue [2 ]
Wang Hui [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Peoples R China
[2] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 01期
基金：
中国国家自然科学基金;
关键词：
surface plasmon polariton; surface plasmon polaritons (SPPs) generator; asymmetric single-slit; finite difference time domain method; TRANSMISSION;
D O I：
10.1088/1674-1056/23/1/017801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A unidirectional surface plasmon polaritons (SPPs) generator with greatly enhanced generation efficiency is proposed. The SPPs generator consists of an asymmetric single nanoslit coated with a polyviny alcohol (PVA) film and a silver rectangle block. The generation efficiency of this SPPs generator is investigated using the finite difference time domain method. Due to the presence of the silver rectangle block, the SPPs generation efficiency of the asymmetric single nanoslit with PVA film can be greatly enhanced and the corresponding wavelength with the maximum enhancement factor can be tuned flexibly. The influence of the structural parameters on the generation efficiency is also investigated for the enhanced unidirectional SPPs generator.
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页数：5
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