Broadband spin-unlocked metasurfaces for bifunctional wavefront manipulations

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成果类型：

期刊论文

作者：

Dong, Shaohua;Li, Shiqing;Ling, Xiaohui;Hu, Guangwei;Li, Yi;...

通讯作者：

Zhu, Hongyi(zhuhy@pcl.ac.cn);Sun, Shulin(sls@fudan.edu.cn)

作者机构：

[Zhu, Hongyi; Li, Yi; Dong, Shaohua] Peng Cheng Lab, Shenzhen 518055, Peoples R China.

[Li, Shiqing; Sun, Shulin; Dong, Shaohua] Fudan Univ, Shanghai Engn Res Ctr Ultra Precis Opt Mfg, Sch Informat Sci & Technol, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China.

[Li, Shiqing] Zhejiang Univ Technol, Coll Sci, Hangzhou 310023, Peoples R China.

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

[Zhou, Lei; Ling, Xiaohui] Fudan Univ, State Key Lab Surface Phys, Key Lab Micro & Nano Photon Struct, Minist Educ, Shanghai 200433, Peoples R China.

通讯机构：

[Hongyi Zhu] P

[Shulin Sun] S

Peng Cheng Laboratory , Shenzhen 518055, China<&wdkj&>Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University , Shanghai 200433, China

语种：

英文

期刊：

Applied Physics Letters

ISSN：

0003-6951

年：

2022

卷：

120

期：

页码：

181702

DOI：

10.1063/5.0091051

基金类别：

This work was supported by the National Key R&D Program of China (Nos. 2020YFA0710100, 2020YFB1806405, and 2017YFA0700202), the Major Key Project of PCL (No. PCL2021A04), the National Natural Science Foundation of China (Nos. 12004258 and 11874118), and the Shanghai Science and Technology Innovation Action Plan (No. 20511102102).

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：

Recently, Pancharatnam-Berry (PB) metasurfaces have exhibited powerful capabilities to control spin-polarized light. However, the adopted abrupt PB phase, introduced by simply rotating the basic elements, is spin-locked with opposite signs for different spin excitations, greatly limiting their practical applications. Here, we introduce a high-efficiency and broadband spin-unlocked metasurface with two mechanisms of a resonance phase and a geometric phase perfectly combined together. The design strategy is quite simple just through changing one ...

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Broadband spin-unlocked metasurfaces for bifunctional wavefront manipulations

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