Fig. 1. Recording process of polarization holographic grating and Poincaré representation of the resultant polarization states E.

Fig. 2. Absorption spectrum and molecular structure of self-assembled azobenzene liquid crystal film [33].

Fig. 3. Setup of intensity-based polarization manipulation by tunable polarization holographic grating (M, mirror; BS, beam splitter; P, polarizer; H, half-wave plate; Att, attenuator; Q, quarter-wave plate).

Fig. 4. Temporal behavior of the ±1st-order diffraction efficiency with the incident beam of LCP under the intensity-ratio of the recording beams V and H of 1:1 (blue, experiment result; red, fitting curve; inset, ±1st-order diffraction efficiency with the incident beams of LCP and RCP under the different intensity-ratios of the recording beams V and H).

Fig. 5. Polarization manipulation of the tunable polarization holographic grating with the incident beam of LCP [blue triangle dashed line, +1st-order polarization modulation; red cycle dashed line, −1st-order polarization modulation; insets (a)–(e) are polarization states of diffracted light based on the different intensity-ratios of recording beams V and H].

Fig. 6. Polarization modulation of the tunable polarized holographic grating with the incident beam of RCP [blue triangle dashed line, +1st-order polarization modulation; red cycle dashed line, −1st-order polarization modulation; insets (a)–(e) are the polarization states of diffracted light based on the different intensity-ratios of recording beams V and H].