Cavity-assisted nonlocal metasurfaces for momentum-space broadband-operational optical vortice generation with maximum efficiency approaching 80%
1College of Physics, Sichuan University, Chengdu 610064, China
2Shandong Provincial Key Laboratory of Optics and Photonic Devices, Center of Light Manipulation and Applications, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
3College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
4State Key Laboratory of Precision Spectroscopy, School of Physics, East China Normal University, Shanghai 200241, China
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