Fig. 1. (a) Number of outer loops by n as 1 and the spiral phase wavefront determined by m0,1 as 2; (b) phase information of the structured light beams with hologram (Holo) and thresholding hologram (T-holo); (c) relation between the phase delay φ and the rotation angle θ of hole; and (d) schematic diagram of the metasurface holography under circularly polarized light illumination.

Fig. 2. Intensity and phase distributions of the designed structured fields and the reproduced structured fields, where (a) the parameter of n takes 0 and the parameter of m0 takes 2; (b) the parameter of n takes 2 and the parameter of mi takes m0=m1=2; and the parameter of n takes 2 and the parameter of mi takes (c) m0=1, m1=2, and m2=3 and (d) m0=1, m1=−2, and m2=3 (white bar, 6 μm).

Fig. 3. Intensity and phase distributions of (a), (c) the designed structured vortex fields and (b), (d) the reproduced structured lights with different polarization light illuminations, where the parameter of n takes 0 and the parameter of m0 takes 2 for (a) and (b), and the parameter of n takes 1 and the parameter of m0=1 and m1=−2 for (c) and (d) (white scale bar, 6 μm).

Fig. 4. (a) Experiment setup for measuring the diffraction intensity and phase distributions of the SVG sample; (b) SEM image of the SVG sample, where the inserted patterns at the bottom are the magnified part; (c) and (d) the measured diffraction intensity distributions under RCP and LCP light illumination; and (e) and (f) the interference results of the reproduced vortex fields and the plane wave for two illumination conditions, where the wavelength of the illuminating light takes 632.8 nm.