A wavefront processing coding metasurface with independent dynamic control of circularly and linearly polarized

被引:0
|
作者
Wang, Wei [1 ]
Chen, Rongquan [1 ]
Chu, Xixi [1 ]
Song, Yuqing [1 ]
Hu, Xudong [1 ]
Xie, Zongquan [1 ]
Liu, Jinbiao [2 ]
Chen, Ming [1 ]
机构
[1] Guilin Univ Elect Technol, Sch Optoelect Engn, Guangxi Key Lab Optoelect Informat Proc, Guilin 541004, Peoples R China
[2] China Elect Technol Grp Corp, Res Inst 34, Guilin 541004, Peoples R China
基金
中国国家自然科学基金;
关键词
Wavefront processing; Independently manipulated; Abnormal reflection; Vortex beam;
D O I
10.1016/j.physb.2024.416519
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
To address the current issue of complex coding metasurface structure and deficiency of independent phase control for distinct polarized light within the broadband range, we present a wavefront processing coding metasurface with independent dynamic control of circularly and linearly polarized. The results demonstrate that when VO2 is in the metallic state and circularly polarized (CP) is incident, the metasurface can achieve efficient broadband circular polarization conversion in the 0.48-1.19 THz range, with a relative bandwidth of 85.02 %. It can achieve full 0-2 pi phase coverage by leveraging the P-B phase principle. When VO2 is in the dielectric state and linearly polarized (LP) is incident, x-LP can attain full 0-2 pi phase coverage in the range of 1.54-1.60 THz and y-LP can reach full 0-2 pi phase coverage in the range of 0.65-1.05 THz, which can be adjusted independently. Through encoding and arranging the metasurface, abnormal reflection and vortex beam generation of different polarized light in the same device are realized.
引用
收藏
页数:8
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