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介绍了一种通过改变电极上的驱动电压来测量和调控入射光偏振态的液晶器件,同时模拟了该器件的液晶分子指向矢分布。众所周知,液晶分子的倾斜角较容易控制,却常忽视其扭曲角同样可以被调控。所以,液晶材料能够用作可变化、可转动的相位延迟器,这样就可以实现用同一器件结构测量入射光偏振态,随后调控该入射光偏振态。模拟了在十字结构电极下液晶层的指向矢分布,表明扭曲角可被电控,同时也说明将入射光偏振态调控到任意偏振态是可以实现的。
A liquid crystal device which measures and controls the polarization state of incident light by changing the driving voltage on the electrode is introduced. At the same time, the director distribution of liquid crystal molecules of the device is simulated. As we all know, the tilt angle of liquid crystal molecules easier to control, but often ignore the twist angle can also be regulated. Therefore, the liquid crystal material can be used as a variable, rotatable phase retarder so that the same device structure can be used to measure the polarization state of incident light and then to control the polarization state of the incident light. The director distribution of the liquid crystal layer under the cross structure electrode is simulated to show that the twist angle can be electronically controlled and the polarization state of the incident light can be controlled to any polarization state.