文献类型：期刊文献

英文题名：Guiding Light with Programmable Wall Defects

作者：Yu, Haibo[1];Liu, Xuan[2];Zhang, Songyu[1];Wang, Zhaoyi[1];Hu, Jiaxiang[3];Luo, Duanbin[1];Zheng, Zhi-Gang[1]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Univ Elect Sci & Technol China, Sch Mech & Elect Engn, Chengdu 611731, Peoples R China

年份：2024

卷号：18

期号：12

外文期刊名：LASER & PHOTONICS REVIEWS

收录：;EI(收录号：20242916722997);WOS:【SCI-EXPANDED(收录号:WOS:001270251800001)】；

基金：H.Y. and X.L. contributed equally to this study. The authors acknowledge the support from the National Key Research and Development Program of China (2022YFA1203700), National Natural Science Foundation of China (grant nos. 61822504, 62035008, and 62275081), Innovation Program of Shanghai Municipal Education Commission, Scientific Committee of Shanghai (2021-01-07-00-02-E00107), "Shuguang Program" of Shanghai Education Development Foundation, Shanghai Municipal Education Commission (21SG29).

语种：英文

外文关键词：guiding light; liquid crystal; wall defect

摘要：External-field controllable light-guiding structures are critical in the field of optical circuits and optical integration, and many well-designed solid-state waveguides have good performance but are weakly controllable. Although there have been attempts at liquid light guiding, liquid-filled waveguides cannot completely break the constraints of the solid structure, and in liquid crystal (LC), the smaller tuning angle of the optical soliton limits its further application. So designing a soft tunable light-guiding structure becomes an urgent but challenging task. In this work, a novel electrically switchable light-guiding structure with LC programmable wall defect is designed and verified. Wide-angle recyclable switching of light guiding under an electric field and optical erasure and rewriting of the structure are realized, unleashing the potential of soft-matter defect structures, and paving the way for soft optical devices and optoelectronic integration. A new external-field switchable liquid crystal defect structure is used to guide light. The structure satisfies a gradient distribution of refractive indices for light incident in a specific polarization direction, thus achieving a waveguide-like structure. An electric reversible switching and photorewritable programming of the defect structure can be realized, respectively. image