期刊
OPTICS COMMUNICATIONS
卷 486, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optcom.2021.126788
关键词
Hyperbolic metamaterials; Switch; Actively controlled media
类别
资金
- National Natural Science Foundation of China (NSFC) [11747080, 11874287, 61975154]
- Shanghai Science and Technology Committee (STCSM), China [18JC1410900]
- King Abdulaziz City for Science and Technology (KACST)
- Shanghai Sailing Program [18YF1410100]
A switch based on switchable magnetic hyperbolic metamaterial is designed, with the ability to switch isofrequency curves between elliptical and hyperbolic shapes via an external DC magnetic field. Different isofrequency curves allow for positive refraction, total reflection, and negative refraction of TE polarized Gaussian beams. Simulation of electric field distribution confirms the predictions, making the switch efficient in controlling refraction properties.
We design a switch based on a switchable magnetic hyperbolic metamaterial that consists of a one-dimensional periodic stacking of dielectric and gyromagnetic layers. The isofrequency curve of the structure can be switched between elliptical and hyperbolic shapes via the external DC magnetic field. The isofrequency curve relates directly to the propagation property of electromagnetic waves. By analyzing the different isofrequency curves, we predict that positive refraction, total reflection, and negative refraction can occur in a TE polarized Gaussian beam incident from air into the structure. The electric field distribution is simulated, and results confirm our predictions. Therefore, our switchable magnetic hyperbolic metamaterial can be used as an efficient switch. To be specific, with the adjustment of the external DC magnetic field, when the isofrequency curve transforms between a circle and a one-sheeted hyperbola, it can switch between positive refraction and total reflection; when the curve transforms between a circle and a two-sheeted hyperbola, it can switch between positive and negative refraction.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据