Chin. Phys. B ›› 2014, Vol. 23 ›› Issue (1): 17801-017801.doi: 10.1088/1674-1056/23/1/017801
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
张志东a, 王红艳a, 张中月b, 王辉a
Zhang Zhi-Dong (张志东)a, Wang Hong-Yan (王红艳)a, Zhang Zhong-Yue (张中月)b, Wang Hui (王辉)a
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.
中图分类号: (Optical properties of surfaces)