基于马吕斯定律的液晶多维复用显示  

Multi-Dimensional Multiplexing Display of Liquid Crystal Based on Malus’Law

作　　者：薛佳敏 武炫光 陈玮琦 魏冰妍 刘圣[1] 赵建林[1] 李鹏[1] Xue Jiamin;Wu Xuanguang;Chen Weiqi;Wei Bingyan;Liu Sheng;Zhao Jianlin;Li Peng(School of Physical Science and Technology,Key Laboratory of Light-Field Manipulation and Information Acquisition,Ministry of Industry and Information Technology,Shaanxi Key Laboratory of Photonics Technology for Information,Northwestern Polytechnical University,Xi’an 710129,Shaanxi,China)

机构地区：[1]西北工业大学物理科学与技术学院,光场调控与信息感知工业和信息化部重点实验室,陕西省光信息技术重点实验室,陕西西安710129

出　　处：《光学学报》2024年第11期215-223,共9页Acta Optica Sinica

基　　金：国家重点研发计划(2022YFA1404800);国家自然科学基金(12174309);陕西数理基础科学研究项目(22JSY013);中央高校基本科研业务费专项资金(5000230111);西北工业大学硕士研究生实践创新能力培育基金(PF2023142)。

摘　　要：采用基于马吕斯定律解耦调控光场振幅和相位的方法,设计了一种能够在可见光全波段实现近、远场空间双通道显示的平面液晶器件,分别通过调控透射场的振幅和相位实现器件表面图像显示及远场的傅里叶变换全息显示。利用远场共轭像强度与近场图像强度间的关系,通过压缩近场图像的强度区间,可以消除全息显示的共轭像。此外,通过调控外场电压实现图像开、关态间的动态调控及响应波长的管理。这种电控的空间和波长维度复用的显示方法,为拓展液晶器件的功能提供了一种新途径。Objective Focusing on the insufficient dynamic modulation ability and modulation dimension of planar liquid crystal(LC)devices,we propose a design of planar LC for decoupling control of the amplitude and phase of light,which enables the dual-channel multiplexing display in the near and far fields in a wide band with conjugated image eliminated.Moreover,wavelength-dependent switching control of the display can be achieved by modulating external electric fields.The electronically controlled multiplexing display in the spatial and wavelength dimensions offers a novel approach to expanding the functionality of LC devices.Methods Firstly,Eqs.(3)and(4)show that under the condition of half-wave delay,either linearly polarized or circularly polarized light incident,the same polarization component in the transmitted light field is eliminated.For the horizontally incident light,the local polarization state of the transmitted light field depends on the vector light field ofθ.The transmitted light field with the intensity of I=sin2(2θ)can be obtained by the vertical polarization filtering according to Malus’law,and the amplitude modulation can be realized,as shown in Fig.1.For the left-handed circularly polarized incident light,the transmitted field is a right-handed circularly polarized light with an additional phase of ei2θ,where 2θis a geometric phase,and thus phase modulation can be achieved.Based on the periodicity of the sine function,a one-to-four mapping was observed between the transmitted light intensity I determined by Malus’law and the orientation angleθ.Based on this degenerate relationship,the decoupling modulation of the amplitude(intensity)and phase of the light field can be realized by selecting an appropriate orientation angle of the LC molecules.With the above amplitude and phase in the decoupling modulation,surface display technology and phase-only hologram were respectively used to design a multiplexing display LC device in the near and far fields,with the working principle shown in Fig.1(c).Fig

关 键 词：液晶 复用显示 偏振 光场调控 全息 

分 类 号：O438[机械工程—光学工程]