基于石墨烯的可调节的多功能可调节的特拉赫兹元表面,独立于极化和入射角度
Ubaid Ur Rahman Qureshi1, Shahid Basir2, Fatma Mallek3
1Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China. ubaid_ur_rahman@bit.edu.cn.
Scientific reports
|March 1, 2024
概括
这项研究引入了一种新的可调节的特拉赫兹元表面,用石墨烯和金属层. 它为先进的太赫兹应用提供了多功能,极化独立的功能.
科学领域:
- 光学和光子学 在光学和光子学.
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 传统的太赫兹超表面在功能,范围和结构复杂性方面存在局限性.
- 对于集成和微型化太赫兹设备的需求越来越大.
研究的目的:
- 为太赫兹频谱提出和演示一个多功能可调节的超表面.
- 克服现有的超表面设计中独特的功能和有限的应用范围的局限性.
主要方法:
- 一个三层的超表面设计,包括石墨烯金共振层,Topas介电层和金膜反射层.
- 研究超表面对循环和线性偏振事件波的反应.
- 利用石墨烯的化学潜力和 incidente光状态进行功能调整.
主要成果:
- 超表面表现出极化和发生角度独立的多功能性.
- 宽带循环二极化 (CD) 是通过循环极化事件波来实现的.
- 线性二重化 (LD) 和极化转换在线性发生下被证明.
结论:
- 拟议的可调节的超表面为太赫兹技术提供了重大进步.
- 潜在的应用包括CD超镜,奇拉光探测器,极化数字成像和智能开关.
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