Fig. 1. (a) Heat transfer equation model. (b) Structure diagram of a laser-irradiated OASLM.

Fig. 2. Simplified heat transfer model.

Fig. 3. (a) Temperature distribution on the y = 0 plane of a laser-induced liquid crystal light valve. (b) Temperature distribution along the transverse direction of an ITO layer, K9 layer and liquid crystal layer. (c) Temperature distribution along the depth direction at the center of a liquid crystal light valve, the small icon shows the material structure distribution along the Z direction.

Fig. 4. (a) Relationship between transmittance and temperature of an OASLM. (b) The required adjustment of driving voltage with temperature.

Fig. 5. Voltage of liquid crystal layer changes with the loaded gray level under different driving conditions.

Fig. 6. Flow chart of the proposed compensation method.

Fig. 7. Schematic diagram of the OASLM temperature rise performance test experimental system. POL: polarizer, HWP: half wave plate, BS: beam splitter, NDF: neutral density filter, L: lens, and ANA: analyzer.

Fig. 8. (a) Temperature of the OASLM as a function of laser power density. (b) Transmittance of the OASLM as a function of temperature, where the red data points are the experimental data and the blue curve is the fitting curve.

Fig. 9. (a) Distribution of light field after transmittance and temperature increase at 24 V. (b)–(d) Light field distribution at 22 V, 20 V and 19 V, respectively. (e) OASLM driving voltage as a function of temperature, where red data points represent experimental data. (f) Gamma curves under different driving conditions and different temperatures. Curve 1: 298 K, 24 V, 600 mA; curve 2: 326 K, 24 V, 600 mA; curve 3: 326 K, 19 V, 600 mA; curve 4: 326 K, 19 V, 1000 mA.

Fig. 10. (a) Gray level sinusoidal distribution pattern, where the red circle indicates the laser irradiation area. (b) Optical field distribution at 7.5 W/cm². (c) Optical field distribution at 21 W/cm². (d) Optical field distribution at 21 W/cm² after compensation. (e) Comparison of transmittance at section line positions in (b), (c) and (d).

Fig. 11. (a) Binary gray bar pattern, where the red circle indicates the laser irradiation area. (b) Optical field distribution at 7.5 W/cm². (c) Optical field distribution at 21 W/cm². (d) Optical field distribution at 21 W/cm² after compensation. (e) Comparison of transmittance at section line positions in (b), (c) and (d).

Table 1. Physical parameters of structural materials.

Table 2. Physical parameters of structural materials.