中国激光, 2017, 44 (7): 0703019, 网络出版: 2017-07-05
基于介质和石墨烯涂层的古斯-汉欣位移的精确调控 下载: 503次
Precise Control of Goos-Hnchen Shift Based on Dielectric and Graphene Coating
材料 古斯-汉欣位移 石墨烯 共振角 反射 传输矩阵 materials Goos-Hnchen shift graphene resonance angle reflection transfer matrix
摘要
提出了一种基于介质和石墨烯涂层的结构来进行古斯-汉欣位移调控, 利用传输矩阵法研究了该结构参数对共振角及共振角处反射光的古斯-汉欣位移的影响。数值模拟结果表明, 共振角随介质层厚度的增加逐渐增大, 而随石墨烯费米能级的增加逐渐减小; 古斯-汉欣位移大小随介质层厚度的增加先增加后减小, 而随石墨烯费米能级的增加单调减小。介质层厚度对共振角的影响较为显著, 而石墨烯费米能级对古斯-汉欣位移的影响较为显著。
Abstract
A structure based on the dielectric and graphene coating is presented to control the Goos-Hnchen shift. The influence of structural parameters on the resonance angle and the Goos-Hnchen shift near the resonance angle are studied with the transfer matrix method. The numerical simulation results show that the resonance angle increases with the increase of the dielectric layer thickness, but decreases with the increase of the graphene Fermi energy. The magnitude of the Goos-Hnchen shift increases first and then decreases with the increase of the dielectric layer thickness, while decreases monotonically with the increase of the graphene Fermi energy. The influence of the dielectric layer thickness on the resonance angle is more significant, while the influence of the graphene Fermi energy on the Goos-Hnchen shift is more significant.
高明盛, 罗朝明, 周宏敏, 陈敏, 吴健辉. 基于介质和石墨烯涂层的古斯-汉欣位移的精确调控[J]. 中国激光, 2017, 44(7): 0703019. Gao Mingsheng, Luo Zhaoming, Zhou Hongmin, Chen Min, Wu Jianhui. Precise Control of Goos-Hnchen Shift Based on Dielectric and Graphene Coating[J]. Chinese Journal of Lasers, 2017, 44(7): 0703019.