Monolayer Chiral Metasurface for Generation of Arbitrary Cylindrical Vector Beams
Qian Chen,
Peijun Liu,
Yanan Fu,
Shuoshuo Zhang,
Yuquan Zhang,
Xiaocong Yuan,
Changjun Min
Affiliations
Qian Chen
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
Peijun Liu
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
Yanan Fu
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
Shuoshuo Zhang
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
Yuquan Zhang
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
Xiaocong Yuan
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
Changjun Min
Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous, Shenzhen University, Shenzhen 518060, China
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.
