Aperture efficiency and mode constituent analysis for OAM vortex beam generated by digital metasurface

Zhang Di, Cao Xiangyu^†, Yang Huanhuan, Gao Jun, Lv Shiqi

(a)–(c) The compensated phase for 1-bit, 2-bit, and 3-bit metasurface, respectively. (d)–(f) Corresponding radiation patterns. (g)–(i) Corresponding phase distributions.