Fig. 1. [in Chinese]

Fig. 2. Fabrication process of the bi-chiral liquid crystal superstructure

Fig. 3. Principle， design and characterization of the bi-chiral superstructur.（a） Schematic of spin-decoupled geometric phase based on the bi-chiral liquid crystal superstructure； （b），（c） Target holographic images and phase hologram designs for the right- and left-handed cholesteric liquid crystal （CLC） layers； （d） Polarized optical micrograph after filling with the right-handed CLC； （e） Polarized optical micrograph after refilling with the left-handed CLC； （f） Transmission spectra of the right-handed CLC before polymerization under different incident polarizations； （g） Transmission spectra of the sample after refilling with the left-handed CLC under different incident polarizations， where λ₁ is 632 nm and λ₂ is 532 nm. the scale bars are all 100 μm.

Fig. 4. Experimental setup， simulation results and experimental measurements of spin-decoupled color holography.（a） Diagram of the experimental optical setup； （b），（f），（j） Simulated diffraction results at different wavelengths under LP light incidence； （c），（d），（e） Experimental diffraction results at wavelength λ₁ under LP， LCP and RCP light incidence； （g），（h），（i） Experimental diffraction results at wavelength λ₂ under LP， LCP and RCP light incidence； （k），（l），（m） Experimental diffraction results at combined wavelengths λ₁+λ₂ under LP， LCP and RCP light incidence. The diffraction distance is 50 cm， and the scale bars all represent 1 cm.