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Keywords = monolayer chiral metasurface

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10 pages, 2634 KiB  
Article
Monolayer Chiral Metasurface for Generation of Arbitrary Cylindrical Vector Beams
by Qian Chen, Peijun Liu, Yanan Fu, Shuoshuo Zhang, Yuquan Zhang, Xiaocong Yuan and Changjun Min
Photonics 2024, 11(1), 57; https://doi.org/10.3390/photonics11010057 - 5 Jan 2024
Cited by 4 | Viewed by 2368
Abstract
The cylindrical vector beam (CVB) has been widely studied and applied in recent years. However, many CVB generation methods suffer from complex systems, and large-size devices are required. Here, we propose a monolayer chiral metasurface composed of spin-sensitive unit cells which can generate [...] Read more.
The cylindrical vector beam (CVB) has been widely studied and applied in recent years. However, many CVB generation methods suffer from complex systems, and large-size devices are required. Here, we propose a monolayer chiral metasurface composed of spin-sensitive unit cells which can generate different holograms for left- and right-circular polarization based on the combined modulation of geometric phase and detour phase. With a linearly polarized incident beam, the metasurface can generate CVBs with controllable polarization angles and orders, and even more complex vector beams. This work provides a new idea for the design of miniaturized optical devices for generating arbitrary vector beams. Full article
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