VO2-based Active Terahertz Chiral Metamaterials

被引：0

作者：

Kang, Lei ^{[1
]}

Campbell, Sawyer D. ^{[1
]}

Werner, Pingjuan L. ^{[1
]}

Werner, Douglas H. ^{[1
]}

Wang, Shengxiang ^{[2
]}

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[2] Wuhan Text Univ, Sch Elect & Elect Engn, Wuhan 430073, Hubei, Peoples R China

来源：

2019 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND USNC-URSI RADIO SCIENCE MEETING | 2019年

基金：

中国国家自然科学基金;

关键词：

Chiroptical response; tunable; THz metamaterials; vanadium dioxide; phase transition;

D O I：

10.1109/apusncursinrsm.2019.8888595

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we demonstrate a vanadium dioxide (VO2) integrated chiral metamaterial exhibiting tunable chiroptical responses at terahertz frequencies. Simulated results show that a circular dichroism of similar to 40 degrees and a maximum polarization rotation of similar to 200 degrees/lambda can be achieved around 0.7 THz with VO2 in its metallic phase. More importantly, the chiroptical response from the hybrid metamaterial varies dramatically with the phase transition determined by the THz conductivity of VO2. Our results reveal that the unification of structured metals and phase-change materials provides the foundation to establish a new paradigm for THz chiroptical metadevices.

引用

页码：1615 / 1616

页数：2

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