摘要
为了解决液晶q波片制备过程中重复性差、方法繁琐、孔径限制的问题,采用了一种基于紫外掩模曝光法和液晶面外区域定向技术的液晶q波片制备方法,进行了理论分析和实验验证.搭建了紫外曝光系统,制备了直径为2.54cm,q=1,夹角α0=0的大孔径液晶q波片.结果表明,紫外掩模法构建的大孔径液晶q波片的自旋角动量-轨道角动量的转换效率可达到85%;利用该波片实现了涡旋光、矢量涡旋光的产生和转换.基于紫外掩模法构建大孔径液晶q波片的方法具有成本低廉、制备工艺简单、速度快等优点,可实现液晶q波片的批量化制作,有利于液晶q波片走向商业化.
In order to solve the problems of poor repeatability, cumbersome methods and aperture limitation in the preparation of liquid crystal q-wave-plates, a preparation method of liquid crystal q-wave-plates was adopted based on ultraviolet mask exposure and liquid crystal out-of-plane orientation technology. Theoretical analysis and experimental verification were carried out. The ultraviolet exposure system was built. Large aperture liquid crystal q-wave-plates were prepared with diameter of 2.54cm, topological charges q of 1 and initial angle of 0.The results show that the conversion efficiency of spin angular momentum to orbital angular momentum of the large aperture liquid crystal q-wave-plates constructed by ultraviolet mask method can reach 85%. By using the wave plate, the generation and conversion of vortices and vector vortices are realized. The method of constructing large aperture liquid crystal q-wave-plates based on ultraviolet mask has advantages of low cost, simple preparation process and fast speed. It can realize batch fabrication of liquid crystal q-wave-plates. It is conducive to the commercialization of liquid crystal q-wave-plates.
作者
张玉娇
高少华
宋筱
禹宣伊
王佳艺
张心正
ZHANG Yujiao;GAO Shaohua;SONG Xiao;YU Xuanyi;WANG Jiayi;ZHANG Xinzheng(TEDA Institute of Applied Physics and School of Physics, Nankai University, Tianjin 300457, China)
出处
《激光技术》
CAS
CSCD
北大核心
2019年第4期442-447,共6页
Laser Technology
基金
国家自然科学基金资助项目(11674182)
天津市自然科学基金资助项目(17JCYBJC16700)
高等学校学科创新引智计划资助项目(B07013)
教育部长江学者和创新团队发展计划PCSIRT资助项目(IRT_13R29)
关键词
光学器件
液晶q波片
特殊光场
涡旋光
琼斯矩阵
optical devices
liquid crystal q-wave-plate
specific light field
vortex beam
Jones matrix
