中红外波段宽带偏振变换器石墨烯超表面

2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2019-09-01 DOI:10.1109/MetaMaterials.2019.8900929

Ahmed A. Abdel Aziz, A. Ibrahim, M. Abdalla

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引用次数: 1

摘要

本文介绍了用于偏振转换的宽带、不敏感入射角石墨烯超表面。利用石墨烯作为超表面的上导体，在中红外波段验证了高偏振转换率(PCR)。超表面结构由单层石墨烯组成，单层石墨烯具有半环形槽，矩形槽之间连接，整体形状旋转45°。二氧化硅衬底与金属衬底一起使用。仿真结果表明，在中红外波段，线偏振入射波在1太赫兹以上的范围内转化为圆偏振入射波。在1.45 THz时，PCR的最大值约为98%。研究了不同入射角下的偏振转换率，在较宽的入射角范围内具有稳定的值。

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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Wide Band Polarization Converter Graphene Metasurface for Mid-Infrared Band

Wide band, insensitive incidence angle graphene metasurface for polarization conversion is introduced in this work. A high Polarization Conversion Ratio (PCR) is verified in Mid-Infrared band by using a graphene as an upper conductor for metasurface. The metasurface construction is composed of a single layer of graphene, which has a half ring slots with rectangular slot connecting between them while the whole shape is rotated with 45°. Silicon dioxide substrate is used with a metal backed ground. The simulation results of the proposed metasurface indicate that a linearly polarized incident wave is converted to a circular polarized one over more than one THz along the Mid-Infrared frequency band. PCR has a maximum value of approximately 98% at 1.45 THz. The polarization conversion ratio is studied for different angles of incidence, with stable value for a wide range of incident angles.

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2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)

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