Author Affiliations
Abstract
Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
We studied Goos–H nchen (GH) shifts on a reflective phase-gradient-produced metasurface. Their analytical solutions were achieved for both TE and TM polarizations utilizing the generalized Snell’s law. The calculated results show that the GH shifts are evidently affected by phase gradients and incident angles, which means that a certain range of GH shifts can be realized as long as an incident angle, phase gradient, and frequency are properly chosen. This offers an effective method for the control of GH shifts.
160.3918 Metamaterials 260.6970 Total internal reflection Chinese Optics Letters
2018, 16(6): 061602
江苏省先进激光材料与器件重点实验室 物理与电子工程学院江苏师范大学, 江苏 徐州 221116
设计了一种新型电磁共振吸收超常材料。这种材料具有金属-绝缘体-金属结构特性，其顶部的金属层由四瓣扇形金块构成。模拟发现，此结构在可见光和紫外频段具有良好的电磁吸收能力，且位于四瓣扇形金块下的介质层的形状、尺寸和介电常数的变化对该材料的吸波能力具有很大的影响。当四瓣扇形金块下的介质层为同等半径的圆柱形状，材料为氧化铝，厚度一定时，结构的吸收率高于90%的相对吸收线宽达到0.76，吸收范围从可见光波段延伸至紫外光波段。该研究为电磁吸波器件的设计和制造提供了一定的理论依据。
材料 计算电磁学 超常材料 数值模拟 介质层 四扇环 吸收 光学学报
2015, 35(s1): s116003
