Dynamically controlling terahertz wavefronts with cascaded metasurfaces

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成果类型：

期刊论文

作者：

Cai, Xiaodong;Tang, Rong;Zhou, Haoyang;Li, Qiushi;Ma, Shaojie;...

作者机构：

[Tang, Rong; Li, Qiushi; Xiao, Shiyi; Cai, Xiaodong] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Shanghai Inst Adv Commun & Data Sci, Shanghai, Peoples R China.

[Ma, Shaojie; Liu, Tong; He, Qiong; Zhou, Haoyang; Zhou, Lei; Wang, Dongyi; Ling, Xiaohui] Fudan Univ, Key Lab Micro & Nano Photon Struct, State Key Lab Surface Phys, Minist Educ, Shanghai, Peoples R China.

[Ma, Shaojie; Liu, Tong; He, Qiong; Zhou, Haoyang; Zhou, Lei; Wang, Dongyi; Ling, Xiaohui] Fudan Univ, Phys Dept, Shanghai, Peoples R China.

[Ling, Xiaohui] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang, Peoples R China.

[Tan, Wei] CAEP, Microsyst & Terahertz Res Ctr, Chengdu, Peoples R China.

语种：

英文

关键词：

terahertz;beam-steering;dielectric metasurfaces;linear gradient phase

期刊：

先进光子学(英文)

ISSN：

2577-5421

年：

2021

卷：

期：

页码：

036003

DOI：

10.1117/1.AP.3.3.036003

基金类别：

financially supported by the National Natural Science Foundation of China （Grant Nos. 11704240, 11734007, and 91850101）； the National Key Research and Development Program of China （Grant Nos. 2017YFA0303504 and 2017YFA0700201）； the Shanghai Science and Technology Committee （Grant Nos. 18QA1401800, 20JC1414601, and 20JC1414602）； the Shanghai East Scholar Plan, Fudan University–CIOMP Joint Fund （No. FC2018-006）；

机构署名：

本校为其他机构

院系归属：

物理与电子工程学院

摘要：

Dynamically controlling terahertz (THz) wavefronts in a designable fashion is highly desired in practice. However, available methods working at microwave frequencies do not work well in the THz regime due to lacking suitable tunable elements with submicrometer sizes. Here, instead of locally controlling individual meta-atoms in a THz metasurface, we show that rotating different layers (each exhibiting a particular phase profile) in a cascaded metadevice at different speeds can dynamically change the effective Jones-matrix property of the whole device, thus enabling extraordinary manipulations ...

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Dynamically controlling terahertz wavefronts with cascaded metasurfaces

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