中国物理B ›› 2010, Vol. 19 ›› Issue (12): 127302-127302.doi: 10.1088/1674-1056/19/12/127302
丁岚, 刘劲松, 王可嘉
Ding Lan(丁岚), Liu Jin-Song(刘劲松)†, and Wang Ke-Jia(王可嘉)
摘要: By using a finite difference time domain (FDTD) method, the effects of a one-dimensional (1D) surface defect on designer surface plasmon polaritons (designer SPPs) supported by a 1D metallic grating in THz domain are investigated. When the size of the defect is in a special range which is not too large, the designer SPPs reflected and scattered by the defect are weak enough to be neglected. The defect only induces a disturbance in the energy distribution of the designer SPP supported by the whole defect grating. If the defect size exceeds the said range, the reflecting and scattering are dominant in the influences of the defect on designer SPPs. Our analysis opens opportunities to control and direct designer SPPs by introducing a 1D defect, especially in low frequency domain.
中图分类号: (Polaritons (including photon-phonon and photon-magnon interactions))