基于近晶相液晶环面焦锥超结构的矢量光阵列  

Generation of vector beam array using toric focal conic superstructures of smectic liquid crystals

作　　者：刘筱姮 王泽宇 王龙洋 魏阳 马玲玲 陆延青[1] LIU Xiaoheng;WANG Zeyu;WANG Longyang;WEI Yang;MA Lingling;LU Yanqing(College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China)

机构地区：[1]南京大学现代工程与应用科学学院,江苏南京210093

出　　处：《液晶与显示》2024年第11期1437-1444,共8页Chinese Journal of Liquid Crystals and Displays

基　　金：国家重点研发计划(No.2022YFA1405000,No.2021YFA1202000);国家自然科学基金(No.62375119);江苏省自然科学基金(No.BK20243067);江苏省自然科学基金省市联合资助项目(No.BK20232040);中央高校基本科研业务费(No.2024300360);中国博士后科学基金面上项目(No.2024M751381);博士后创新人才支持计划(No.BX20240163);江苏省卓越博士后计划(No.2024ZB861)。

摘　　要：本文从近晶相液晶超结构的生长制备优化、矢量结构光阵列产生和微透镜成像等方面进行系统研究。在实验中基于光控取向技术,精确控制液晶分子在微观尺度上的排列,设计并优化了液晶盒内近晶相环面焦锥畴阵列的制备流程,成功产生并检测到偏振阶数P=2的偏振矢量光阵列并且探讨了环面焦锥畴阵列作为微透镜阵列的多功能应用潜力。本研究将液晶微结构的拓扑属性与结构光场的拓扑特性交叉融合,充分发挥液晶材料在自组装制备方面的独特优势,不仅为特殊结构光场的产生、调控、探测提供了可能,而且还预示着在精确控制应用领域,如光学陷阱、微流控制和高分辨率成像等方面,可能引发一系列创新性的应用。This research illustrates the growth and optimization of mesoscopic liquid crystal superstructures,the generation of vector structured beam arrays,and the application of microlens imaging.Utilizing photoalignment technology,we perform hierarchical control of liquid crystal molecular arrangements from the nanoscale layers to microscale domains and,ultimately,to superstructure arrays.Specifically,we design and optimize the quality of smectic liquid crystal toric focal conic superstructures within the cells.This approach allows us to generate and characterize radially polarized vector beam arrays with a polarization order of P=2.Furthermore,we explore the multifunctional application potential of toric focal conic domain arrays as microlens arrays.Our research integrates the topological properties of liquid crystal microstructures with the structured light fields’topological characteristics,leveraging the unique self-assembly capabilities of liquid crystal materials.This integration not only enables the generation,modulation,and detection of specially structured light fields but also suggests potential innovative applications in precision control fields,such as optical trapping,microfluidic control,and high-resolution imaging.

关 键 词：液晶 近晶相 光控取向 环面焦锥畴结构 矢量光 微透镜阵列 

分 类 号：O753.2[理学—晶体学] O437[机械工程—光学工程]