圆极化
二向色玻璃
光学
圆二色性
极化(电化学)
波长
磁圆二色性
雷
物理
二色性
偏振滤光片
线极化
材料科学
光学滤波器
光电子学
谱线
化学
激光器
结晶学
物理化学
微带线
天文
作者
Xiaojie Sun,Mingzhu Xu,Guangxue Wang,Qiuyang Song,Yang Li,Xiumin Gao
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-04-20
卷期号:61 (12): 3435-3442
摘要
Based on the theory of circular polarization dichroism in electromagnetic fields, this paper studies the circular dichroism (CD) characteristics of metasurfaces. Using a stable silicon material, an innovative "double L-shaped" composite structure formed by two L crosses is proposed to improve CD. Under a wide spectrum with wavelengths of 1000-1500 nm, the left circularly polarized (LCP) and right circularly polarized (RCP) lights pass through the structure, and we study the influence of different structural parameters on the CD, in order to obtain the best structural parameters. These realize the cross polarization of left-right circularly polarized light. In addition, at the wavelength of 1302.63 nm, the LCP light illuminates the structure, which realizes the cross polarization of LCP light; that is, the structure realizes the function of a half-wave plate. The RCP light incident structure realizes the function of a filter. It has great application prospects in biological detection, half-wave plates, filters, and other fields.
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