折射率
极化(电化学)
光学
时域有限差分法
各向异性
材料科学
功勋
雷
光电子学
物理
物理化学
化学
作者
Shiwen Wu,Ruda Jian,Guoping Xiong
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-01-19
卷期号:47 (3): 517-517
被引量:4
摘要
The in-plane orientation-dependent electrical and optical properties of two-dimensional (2D) anisotropic materials attract significant attention because of the intriguing underlying physics. However, this feature limits their further development in polarization-independent applications such as refractive index sensors and light absorbers. In this paper, polarization-independent optical properties of black phosphorous (BP) metadevices are achieved by the design of a single-layer pattern of 2D anisotropic material. Finite-difference time-domain (FDTD) simulation results indicate that the absorption spectrum remains unchanged as the polarization angle of the incident light varies from 0° to 360°. The performance of the BP metadevices when used as refractive index sensors is also studied. The results show that the polarization-independent BP sensors exhibit high sensitivity and figures of merit (FOMs). This work opens up the possibility of fabricating optically polarization-independent devices based on a single-layer pattern of 2D anisotropic material.
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