A polarization multi-channel metasurface optical element and a method for reconstructing a full color holographic image. The polarization multi-channel metasurface optical element consists of a dielectric substrate (1) and an anisotropic dielectric nanostructure array thereon, and achieves encoding of a holographic image for up to three independent polarization channels by means of adjusting the in-plane dimensions and the in-plane angles of nanostructures at various locations; in addition, the metasurface has the characteristic of wide band usage, and high efficiency multi-channel polarization multi-channel holography can be achieved at different wavebands by means of selecting different dielectric materials. By means of coupling three primary color components of a full color picture into three independent polarization channels of a visible light waveband polarization multi-channel metasurface, full color holographic displaying with near zero crosstalk can be achieved.
POLARIZATION MULTI-CHANNEL METASURFACE OPTICAL ELEMENT AND METHOD FOR RECONSTRUCTING FULL COLOR HOLOGRAPHIC IMAGE