A complex amplitude control method of metasurface based on full phase modulation

Unlike the Pancharatnam-Berry phase and spin-decoupled metasurface, which only modifies the phase of the cross-polarization components, the full-phase modulation metasurface achieves independent wavefront control of the co- and cross-polarization components of circularly polarized waves. As a result, a novel concept for multifunctional manipulation of the metasurface is presented in this paper, which is a complex amplitude control method based on full-phase modulation via a metasurface. This method allows for simultaneous and independent amplitude and phase manipulation of the co- and cross-polarization components of circularly polarized waves. At 980 nm wavelength, the results of complex amplitude control for incident circularly polarized light (left circularly polarized or right circularly polarized) demonstrate the feasibility of the method.

Automated summary

Unlike other methods that only modify the phase of cross-polarization components, this paper presents a novel concept for multifunctional manipulation of a metasurface through full-phase modulation. This method allows for simultaneous and independent amplitude and phase control of both co- and cross-polarization components of circularly polarized waves. Experimental results at 980nm wavelength demonstrate the feasibility of this complex amplitude control method for circularly polarized light (left or right circularly polarized).