Efficient manipulation of terahertz waves by multi-bit coding metasurfaces and further applications of such metasurfaces*

doi:10.1088/1674-1056/abd6fc

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	Efficient manipulation of terahertz waves by multi-bit coding metasurfaces and further applications of such metasurfaces*
	Qi, Yunping 2; Zhang, Baohe 2; Ding, Jinghui 2; Zhang, Ting 2; Wang, Xiangxian 1; Yi, Zao 3
刊名	CHINESE PHYSICS B
	2021
卷号	30 期号:2
关键词	coding metasurface Pancharatnam-Berry phase multiple beams radar cross-section (RCS) reduction orbital angular momentum
ISSN号	1674-1056
DOI	10.1088/1674-1056/abd6fc
英文摘要	Benefiting from the unprecedented superiority of coding metasurfaces at manipulating electromagnetic waves in the microwave band, in this paper, we use the Pancharatnam-Berry (PB) phase concept to propose a high-efficiency reflective-type coding metasurface that can arbitrarily manipulate the scattering pattern of terahertz waves and implement many novel functionalities. By optimizing the coding sequences, we demonstrate that the designed 1-, 2-, and 3-bit coding metasurfaces with specific coding sequences have the strong ability to control reflected terahertz waves. The two proposed 1-bit coding metasurfaces demonstrate that the reflected terahertz beam can be redirected and arbitrarily controlled. For normally incident x-and y-polarized waves, a 10 dB radar cross-section (RCS) reduction can be achieved from 2.1 THz to 5.2 THz using the designed 2-bit coding metasurface. Moreover, two kinds of orbital angular momentum (OAM) vortex beams with different moduli are generated by a coding metasurface using different coding sequences. Our research provides a new degree of freedom for the sophisticated manipulation of terahertz waves, and contributes to the development of metasurfaces towards practical applications.
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000623861500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147475]
专题	理学院
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China; 2.Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China; 3.Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621900, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Qi, Yunping,Zhang, Baohe,Ding, Jinghui,et al. Efficient manipulation of terahertz waves by multi-bit coding metasurfaces and further applications of such metasurfaces*[J]. CHINESE PHYSICS B,2021,30(2).
APA	Qi, Yunping,Zhang, Baohe,Ding, Jinghui,Zhang, Ting,Wang, Xiangxian,&Yi, Zao.(2021).Efficient manipulation of terahertz waves by multi-bit coding metasurfaces and further applications of such metasurfaces*.CHINESE PHYSICS B,30(2).
MLA	Qi, Yunping,et al."Efficient manipulation of terahertz waves by multi-bit coding metasurfaces and further applications of such metasurfaces*".CHINESE PHYSICS B 30.2(2021).