Gate-tuned graphene meta-devices for dynamically controlling terahertz wavefronts

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成果类型：

期刊论文

作者：

Li, Qiushi;Cai, Xiaodong;Liu, Tong;Jia, Min;Wu, Qiong;...

通讯作者：

Xiao, SY;Zhou, L

作者机构：

[Wang, Qianqian; Xiao, SY; Xiao, Shiyi; Li, Qiushi; Cai, Xiaodong] Shanghai Univ, Shanghai Inst Adv Commun & Data Sci, Key Lab Specialty Fiber Opt & Opt Access Networks, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Shanghai 200444, Peoples R China.

[Wu, Qiong; Liu, Tong; Zhang, Yuanbo; He, Qiong; Zhou, Haoyang; Zhou, Lei; Jia, Min; Zhou, L] Fudan Univ, Key Lab Micro & Nano Photon Struct, State Key Lab Surface Phys, Minist Educ, Shanghai 200433, Peoples R China.

[Wu, Qiong; Liu, Tong; Zhang, Yuanbo; He, Qiong; Zhou, Haoyang; Zhou, Lei; Jia, Min; Zhou, L] Fudan Univ, Phys Dept, Shanghai 200433, Peoples R China.

[Liu, Huanhuan] Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China.

[Ling, Xiaohui] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.

通讯机构：

[Xiao, SY ] S

[Zhou, L ] F

Shanghai Univ, Shanghai Inst Adv Commun & Data Sci, Key Lab Specialty Fiber Opt & Opt Access Networks, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Shanghai 200444, Peoples R China.

Fudan Univ, Key Lab Micro & Nano Photon Struct, State Key Lab Surface Phys, Minist Educ, Shanghai 200433, Peoples R China.

Fudan Univ, Phys Dept, Shanghai 200433, Peoples R China.

语种：

英文

关键词：

Polarization;Terahertz waves;Wavefronts;Coupled mode theory;Dynamical control;Local tuning;Metasurface;Micrometer sizes;Submicrometers;Tera Hertz;Tunables;Tuning mechanism;Wavefront manipulation;Graphene

期刊：

Nanophotonics

ISSN：

2192-8606

年：

2022

卷：

期：

页码：

2085-2096

DOI：

10.1515/nanoph-2021-0801

基金类别：

Research funding: This work was financially supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0303504 and 2017YFA0700201), the National Natural Science Foundation of China (Grant Nos. 62175141, 11734007, 62192771 and 91850101), the Shanghai Science and Technology Committee (Grant Nos. 18QA1401800, 20JC1414601, and 20JC1414602), and the Shanghai East Scholar Plan.

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本校为其他机构

院系归属：

物理与电子工程学院

摘要：

Dynamical controls on terahertz (THz) wavefronts are crucial for many applications, but available mechanism requests tunable elements with sub-micrometer sizes that are difficult to find in the THz regime. Here, different from the local-tuning mechanism, we propose an alternative approach to construct wavefront-control meta-devices combining specifically designed metasurfaces and globally tuned graphene layers. Coupled-mode-theory (CMT) analyses reveal that graphene serves as a tunable loss to drive the whole meta-device to transit from one fun...

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Gate-tuned graphene meta-devices for dynamically controlling terahertz wavefronts

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