Author Affiliations
1 The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics and TEDA Institute of Applied Physics, Nankai University, Tianjin 300071, China2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 0 30006, Chinashow less
Fig. 1. Skeleton diagram of review
Fig. 2. Phase-gradient metasurfaces. (a) Metasurface with resonant phase[9]; (b) metasurface of geometric phase[43]; (c) metasurface of propagation phase[45]
Fig. 3. (a) Schematic of designed unit cells on metasurface[34]; (b) sphere of metaunit with polar angle of ?i/2 and azimuthal angle of kxi, where red-star-line shows equivalence of ?i/2+kxi=π[34]
Fig. 4. Metasurface of plasmonic half-wave plates[53]. (a) Schematic of PB metasurface; (b) arrangement of nanoantenna pairs of half-wave plates; (c) measured transmitted polarization angle and intensity
Fig. 5. Hologram of Huygen’s metasurface[54]. (a) SEM image; (b) dark-field microscope image; (c) theoretically holographic images at 1600 nm; (d) experimentally holographic images at 1600 nm
Fig. 6. Wide-angle Fourier lens[61]. (a) Schematic of Fourier lens; (b) phase difference and magnetic distribution of 8 dielectric silicon waveguides with incident light from -60° to 60°; (c) experimental intensity distribution of Fourier lens at xz plane
Fig. 7. Plasmonic metasurface with simultaneous control of phase and polarization[48]. (a) Schematic of upper and lower two-layer non-aligned structure; (b) simulated phase and amplitude curves of transmitted light of upper and lower non-aligned structures; (c) 26 nano-aperture pairs for full control of phase and polarization; (d) measured far-field intensity distributions of radially polarized beam
Fig. 8. Metasurface of dual-mode vector beam[69]. (a) Schematic of dual-layer metasurfaces; (b) phase and polarization distributions of transmitted circularly polarized light; (c) models of radially polarized vector beam; (d) models of azimuthally polarized vector beam; (e) models of dual-mode vector beam
Fig. 9. Dielectric metasurface with simultaneous control of phase and polarization[71]. (a) Schematic of metasurface; (b) schematic of polarization beamsplitter of x and y polarized light; (c) polarization-switchable phase hologram of x and y polarized light
Fig. 10. Metasurface with independent phase control at arbitrary orthogonal polarization state[72]. (a) Schematic of metasurface with arbitrary phase profile by combining geometric and propagation phase; (b) optical setup for chiral hologram designed by metasurface at wavelength of 532 nm; (c) different chiral holographic images by same metasurface under vertical polarization
Fig. 11. Broadband metasurface with simultaneous control of phase and amplitude. (a) Schematic of C-shape antenna metasurface[97]; (b) amplitude and phase curves of 3 diffraction orders at 0.63 THz[97]; (c) schematic of Huygens metasurface[98]; (d) phase variation of reflection coefficient S11 with different resonant lengths and rotation angles[98]
Fig. 12. Metasurface with multinanorods[99]. (a) Schematic of metasurface; (b) amplitudes of anomalous refraction for different nanorods; (c) plasmonic hybridization for multinanorods; (d) far-field normalized intensity curves of nanorods with different numbers
Fig. 13. Broadband holographic metasurface[109]. (a) Schematic of metasurface; (b) amplitude distribution and phase distribution of metasurface (left), and holographic images (right)
Fig. 14. Airy beam generated by metasurface with control of phase and amplitude[115]. (a) Schematic of plasmonic metasurface; (b) amplitude curves of gold nanorods with different lengths; (c) simulated electric field distributions of Airy beam without full amplitude modulation, amplitude modulation, and simplified amplitude modulation, respectively
Fig. 15. (a) Phase distribution of FWM field at surface exit[138]; (b) phases accumulated by different fields[138]; (c) SEM image and the measured focal field of 30 μm nonlinear metalens[138]; (d) SEM image and the measured focal field of 5 μm nonlinear metalens[138]
Fig. 16. Spin and wavelength multiplexed nonlinear holography[139]. (a) Linear and nonlinear geometric phases of metasurface; (b) linear and nonlinear holography imaging; (c) nonlinear holographic images
Fig. 17. Beam shaping of plasmonic nonlinear metasurface[143]. (a) Schematic of nonlinear metasurface; (b) SEM image of unit cells on metasurface; (c) vortex beam generated from nonlinear metasurface; (d) simulation and measurement images of SHG vortex beam in far field