Generating Dual-Polarized Vortex Beam by Detour Phase: From Phase Gradient Metasurfaces to Metagratings

• Published in: IEEE transactions on microwave theory and techniques Vol. 70; no. 1; pp. 200 - 209
• Main Authors: Zhang, Kuang, Wang, Yuxiang, Burokur, Shah Nawaz, Wu, Qun
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Angular momentum; Communications systems; Detour phase; Diffraction; dual-polarization; Electron beams; Engineering Sciences; Frequencies; Generators; Impedance; metagrating (MG); Metals; Metasurfaces; Multiplexing; phase gradient metasurface (PGM); Phased arrays; Structural beams; vortex beam; Vortices

Traditional methods of generating vortex beams based on metasurfaces consist mainly in modulating propagation phase or geometric phase. Here, by introducing detour phase, we propose the construction of dual-polarized vortex beam generators in the form of metasurface and metagrating (MG). The phase i...