Terahertz carpet cloak based on ultrathin metasurface

Minggui Wei; Quanlong Yang; Xueqian Zhang; Yanfeng Li; Jianqiang Gu; Jiaguang Han; Weili Zhang

doi:10.1117/12.2295507

12 January 2018 Terahertz carpet cloak based on ultrathin metasurface

Minggui Wei, Quanlong Yang, Xueqian Zhang, Yanfeng Li, Jianqiang Gu, Jiaguang Han, Weili Zhang

Proceedings Volume 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 1062306 (2018) https://doi.org/10.1117/12.2295507
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

Ultrathin metasurfaces with local phase compensation deliver new schemes to cloaking devices. We demonstrate a remarkable large size carpet cloak realized by an ultrathin metasurface at terahertz frequencies. The metasurface cloak is constructed by periodically arranging 12 different elements. The reflected wave front is perfectly reconstructed by an ultrathin metasurface cloak, which perform well under both intensity-sensitive and phase-sensitive detectors. The invisibility is verified when the cloak is placed on a reflecting triangular surface (bump). The multi-step discrete phase design method would greatly simplify the design process and is probable to achieve large-dimension cloaks, for applications in radar and antenna systems as a thin and easy-to-fabricate solution for radio and terahertz frequencies.

Citation Download Citation

Minggui Wei, Quanlong Yang, Xueqian Zhang, Yanfeng Li, Jianqiang Gu, Jiaguang Han, and Weili Zhang "Terahertz carpet cloak based on ultrathin metasurface", Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1062306 (12 January 2018); https://doi.org/10.1117/12.2295507

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