Fig. 1. Schematic illustration of working principle of LH chiral metasurface with tunable operating wavelength under +z-directed incident light

Fig. 2. Asymmetric optical response of amorphous LH chiral metasurface. (a) Transmission spectra TLCPf and TLCPb under forward and backward incidence of LCP light; (b) asymmetry parameter values Δ_LCP and Δ_RCP of dendritic-shaped periodic structure with twofold rotational symmetry under excitation of LCP and RCP light

Fig. 3. Giant chiral effect of amorphous LH metasurface. (a) Simulated transmission spectra of LCP and RCP light at forward incidence; (b) CD and CPER

Fig. 4. Optical response of metasurface under various CR values. (a) CD spectra; (b) CPER spectra; (c) sample library of CD values of metasurface under various CR values

Fig. 5. Near-electric field distributions of sections of amorphous metasurface under different excitation. (a)(c) 4.19 μm, LCP; (b)(d) 4.19 μm, RCP; (e)(g) 5.44 μm, LCP; (f)(h) 5.44 μm, RCP

Fig. 6. Near-electric field distributions of sections of crystalline metasurface under different excitation. (a)(c) 4.19 μm, LCP; (b)(d) 4.19 μm, RCP; (e)(g) 5.44 μm, LCP; (f)(h) 5.44 μm, RCP

Fig. 7. Multipole decomposition of reflected electric field of amorphous LH dendritic-shaped structure under LCP and RCP light incidence. (a)(b) Absolute values of contributions of each multipole moment to y component of reflected electric field; (c) total reflected field intensity of two circularly polarized lights; (d)(e) absolute values of contributions of each multipole moment to x component of reflected electric field; (f) CD spectrum of periodic dendritic-shaped nanostructure without substrate and mask layer

Fig. 8. Multipole decomposition of reflected electric field of crystalline LH dendritic-shaped structure under LCP and RCP light incidence. (a)(b) Absolute values of contributions of each multipole moment to y component of reflected electric field; (c) total reflected field intensity of two circularly polarized lights; (d)(e) absolute values of contributions of each multipole moment to x component of reflected electric field; (f) CD spectrum of periodic dendritic-shaped nanostructure without substrate and mask layer

Fig. 9. Multipole decomposition of scattering power in an amorphous LH structure. (a) LCP; (b) RCP

Fig. 10. Multipole decomposition of scattering power in a crystalline LH structure. (a) LCP; (b) RCP