摘要
利用超表面实现对光的操控是光学领域的研究热点之一。设计了一种U型单元结构,通过将结构以斜对称的方式放置并改变结构的几何参数,实现了透射光从0到2π的相移;采用线偏振光、左旋偏振光和右旋偏振光作为入射光,通过结构优化实现了具有偏振不依赖性的光束异常折射的光束偏转器,其折射角为22.4°,并探讨了超透镜的功能,为超表面的应用提供了参考。
One of the research hotspots in the field of optics is light manipulation using super surface.Herein,a Ushaped element structure is designed.The phase shift of transmitted light from 0 to 2πis realized by placing the structure in an oblique symmetrical manner and changing the geometric parameters of the structure.Using linearly polarized light,lefthanded polarized light,and righthanded polarized light as incident lights,a beam deflector with polarization independent beam abnormal refraction is realized through structural optimization,and the refraction angle is 22.4°.The function of a super lens is also discussed,which provided a reference for the application of the super surface.
作者
任芝
李文雯
林俊哲
常斯琦
李松涛
Ren Zhi;Li Wenwen;Lin Junzhe;Chang Siqi;Li Songtao(Department of Mathematics and Physics,North China Electric Power University,Baoding 071003,Hebei,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2022年第19期323-329,共7页
Laser & Optoelectronics Progress
基金
河北省自然科学基金(A2019502044)
教育部中央高校基本科研业务项目(2020 MS138)。
关键词
表面光学
超表面
光束偏转器
超透镜
偏振不依赖性
surface optics
super surface
beam deflector
super lens
polarization independence
