高频脉冲驱动下液晶盒的开关动力学机理
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关键词：液晶空间光调制器;高频脉冲驱动;Ericksen-Leslie动力学理论；指向矢开关动力学;惯性与黏性效应 中图分类号：TN141.9;O436文献标识码：Adoi：10.37188/CJLCD.2025-0168CSTR：32172.14.CJLCD.2025-0168
Abstract：High-resolution liquid crystal spatial light modulators driven by high-frequency pulses are widely used in holographic imaging，near-eye AR/VR，optical communication and other fields，but the lack of fast response performance and output jiter of the liquid crystal cellare still technical problems that need to be solved urgently. Existing studies are mostly limited to static or low-frequency slow electric fields，and the complex relationship between high-frequency pulse driving and switching dynamics is not clear.Based on the Ericksen-Leslie dynamics theory of nematic liquid crystals，the characteristic curves of equations under inertia or viscosity dominated has been discussed and simulated in this paper. As mentioned previously，a parallel-aligned liquid crystal cell with a cell thickness of approximately 1μm was used，driven byrectangular pulses from 1kHz to 10kHz ，and the relaxation process of the liquid crystal was observed by the light intensity method.The results show that after thedriving field is turned off，the relaxation process of the nematic liquid crystal deformation is jointly dominated by inertial and viscous properties.Based on this finding，we conclude that the proposed model provides a more precise interpretation of the switching dynamics of liquid crystal cels，which willfacilitate the optimization ofliquid crystal spatial light modulators. Meanwhile，this work is expected to promote a more in-depth investigation into the switching dynamics mechanism of liquid crystal cells under high-frequency pulse driving.
Key words： liquid crystal spatial light modulator；high-frequency pulse drive；Ericksen-Leslie kinetic theory；director switching dynamics；inertia and viscosity effects
1引言
高频脉冲驱动下的液晶空间光调制器（SpatialLightModulator，SLM）是新一代极具潜力的近眼增强现实（AugmentedReality，AR）虚拟现实（VirtualReality，VR）以及全息视频显示器的首选[1-4]，并正快速进入工业和科学的光子应用，如光镊、自适应激光加工系统和现代光通信网络波长选择交换机的波前空间调制等[5-6]。（剩余11925字）
