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基于飞秒激光直写的液晶面外区域定向技术及其应用

Compartmentalized Out-of-Plane Alignment of Liquid Crystals Based on Femtosecond Laser Direct Writing and Its Applications

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摘要

随着激光加工技术和液晶取向工艺的发展,一种新型的基于飞秒激光直写的液晶面外区域定向技术问世。基于飞秒多光子光聚合激光直写技术制备出由聚合物条带构成的微结构,将其制成液晶盒,并充入不同种类的液晶,即可实现电光开关、磁光开关、光场调控等功能。每条聚合物条带的侧壁上都分布有表面浮雕光栅结构,使得液晶在聚合物条带通道内的定向成为可能。该技术不仅使不同区域内的液晶实现了物理隔离,还可以使液晶和聚合物实现完全的相分离。该技术快捷简单,在可调谐衍射光栅的实现、特殊光场的产生、光子晶体中的光场调控等方面具有重要的应用价值。

Abstract

Owing to the developments in laser processing technology and liquid crystal alignment technology, a novel compartmentalized out-of-plane alignment technology of liquid crystals based on femtosecond laser direct writing is introduced. Femtosecond multiphoton polymerization based laser direct writing is used to prepare microstructures comprising polymeric ribbons. The liquid crystal cells are fabricated by filling different kinds of liquid crystals that can then function as an electro-optical switch, a magneto-optical switch, and light field control. The surface relief grating structures are distributed on the sidewalls of each polymer ribbon, which make it possible for liquid crystal orientation within the polymeric ribbon channel. The technology can realize the physical isolation of liquid crystals in different regions and complete phase separation of liquid crystals and polymers. The proposed technology is fast and simple, which has great application value in tunable diffraction gratings, special light field generation, and light field control in photonic crystals.

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中图分类号:O437

DOI:10.3788/cjl201946.0508009

所属栏目:“超快激光非线性光学”专题

基金项目:国家重点研发计划(2017YFA0303800);国家自然科学基金(11674182,91750204)、天津市自然科学基金(17JCYBJC16700)、高等学校学科创新引智计划(B07013)、教育部长江学者和创新团队发展计划PCSIRT资助项目(IRT_13R29)、斯洛文尼亚科研署资助项目(ARRS,P1-0192)

收稿日期:2019-01-11

修改稿日期:2019-02-19

网络出版日期:2019-03-21

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高少华:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
禹宣伊:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
宋筱:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
张玉娇:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
王佳艺:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
李晓荣:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
李文华:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
冀志超:信阳师范学院物理电子工程学院, 河南 信阳 464000
廖宏艳:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
李威:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
Irena Drevensek-Olenik:卢布尔雅那大学数学物理系, 斯洛文尼亚斯特藩研究所复杂物质系, 斯洛文尼亚 卢布尔雅那 SI-1000
张心正:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457
许京军:南开大学泰达应用物理研究院和物理科学学院弱光非线性光子学教育部重点实验室, 天津 300457

联系人作者:张心正(zxz@nankai.edu.cn); 许京军(jjxu@nankai.edu.cn);

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引用该论文

Gao Shaohua,Yu Xuanyi,Song Xiao,Zhang Yujiao,Wang Jiayi,Li Xiaorong,Li Wenhua,Ji Zhichao,Liao Hongyan,Li Wei,Irena Drevensek-Olenik,Zhang Xinzheng,Xu Jingjun. Compartmentalized Out-of-Plane Alignment of Liquid Crystals Based on Femtosecond Laser Direct Writing and Its Applications[J]. Chinese Journal of Lasers, 2019, 46(5): 0508009

高少华,禹宣伊,宋筱,张玉娇,王佳艺,李晓荣,李文华,冀志超,廖宏艳,李威,Irena Drevensek-Olenik,张心正,许京军. 基于飞秒激光直写的液晶面外区域定向技术及其应用[J]. 中国激光, 2019, 46(5): 0508009

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