Fig. 1. (Color online) Photo-induced QRs alignment. Chemical structure of (a) SD1 and (b) LCP. (c) Process flow for unidirectional QRs alignment.

Fig. 2. (Color online) 2D Dammann pattern QRs alignment. (a) Process flow of multi domain photo alignment. (b) Photo mask of Dammann grating. (c) QRs-LCP composite film of Dammann pattern within “SKL” characters. (d) Diffraction pattern of “SKL” characters.

Fig. 3. (Color online) Dammann grating pattern under fluorescence microscope. (a) Bright field image between cross polarizes. Fluorescence field images with polarization azimuth (b) perpendicular and (c) parallel to uniform alignment direction (white arrow) of QRs in the composite film, respectively.

Fig. 4. (Color online) Principle of polarization converting hologram (PCH). (a) Optical scheme of PCH exposure. (b) Cross-section scheme of the plano-convex lens phase mask.

Fig. 5. (Color online) Continuously QRs-LCP alignment composite film under (a) polarized optical microscope, (c) fluorescence microscope with polarized excitation. (b) Theoretical intensity profiles through corresponding horizontal centers, respectively.