宽带和广角太赫兹反射半波镜

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI:10.1109/IRMMW-THz.2019.8874194

R. Ako, Wendy S. L. Lee, M. Bhaskaran, S. Sriram, W. Withayachumnankul

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引用次数: 0

摘要

电磁波的线性到线性极化转换在通信、成像、传感等领域有着广泛的应用。现有的超表面极化控制器件在带宽、效率和接收角度等方面受到限制。本文提出了一种由t形谐振腔组成的反射半波镜，并进行了实验验证。测量结果表明，在法向入射角和45°入射角的中心频率为0.7太赫兹时，带宽分别为95%和100%。实测结果与仿真结果吻合较好。在0°到45°的入射角范围内，平均极化转化率(PCR)大于80%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Broadband and wide-angle terahertz reflective half-wave mirror

Linear-to-linear polarization conversion of electromagnetic wave has application in various fields including communications, imaging and sensing. Available polarization-control devices enabled by metasurfaces are limited in bandwidth, efficiency and acceptance angle. Herein, a reflective half-wave mirror composed of T-shaped resonators is proposed and experimentally evaluated. Measured results show a bandwidth of 95% and 100% around a center frequency of 0.7 THz for the normal and 45° angle of incidence. The measured results agree well with the simulation. An average polarization conversion ratio (PCR) greater than 80% is observed across 0° to 45° incidence angles.

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2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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