Switchable terahertz polarization conversion via phase-change metasurface

Xiaofang Wu, F. Lan, Zongjun Shi, Ziqiang Yang
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引用次数: 4

Abstract

We have designed a switchable ultrathin THz linearly and circularly reflective polarization converter (RPC) by inserting phase-change material, vanadium dioxide (VO2), into a chiral metasurface (CM). By thermally controlling of the VO2 phase transition, over 99.1% 90° linear polarization (LP) conversion modulation depth and dual-band linear to circular polarization (CP) conversion with ellipticity close to 1 have been obtained. These excellent properties make the composite chiral metamaterials particularly suitable for designing tunable polarization rotating devices, which can be widely used in detection, sensing and communications.
通过相变超表面的可切换太赫兹偏振转换
我们通过将相变材料二氧化钒(VO2)插入到手性超表面(CM)中,设计了一种可切换的超薄太赫兹线性和圆反射偏振转换器(RPC)。通过对VO2相变的热控制,获得了超过99.1%的90°线极化(LP)转换调制深度和椭圆率接近1的双频线极化到圆极化(CP)转换。这些优异的性能使得复合手性超材料特别适合设计可调谐偏振旋转器件,可广泛应用于检测、传感和通信等领域。
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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