液晶与显示2024，Vol.39Issue(6)：752-760,9.DOI:10.37188/CJLCD.2024-0114
采用丙烯酸酯双单体的高空间频率透射式体全息H-PDLC光栅的研制
Preparation of dual-monomer high spatial frequency H-PDLC grating based on acrylic polymer
摘要
Abstract
Holographic-polymer dispersed liquid crystal(H-PDLC)volume holographic gratings provide a better approach for holographic waveguide couplers due to stable chemical state,simple fabrication and low cost advantages.This article proposes the development of H-PDLC transmissive volume gratings using composite acrylic high/low refractive index matching modulation.Firstly,the formation mechanism of H-PDLC grating was introduced based on the combination of coupled wave theory and molecular diffusion theory.Then,grating materials with different functional monomers were screened through experiments,and holographic diffraction properties were studied.On this basis,the performance of high-frequency volume holographic H-PDLC gratings was further optimized by increasing the content of initiators.The experimental results show that the H-PDLC formulation of this dual monomer can achieve a visible light transmittance of over 90%,with a diffraction efficiency of 90%and a response bandwidth of 99 nm at 973 lp/mm;At 2 941 lp/mm,the diffraction efficiency is 75.4%and the response bandwidth is 29 nm.The H-PDLC grating has considerable application prospects as a coupler in waveguide display systems.关键词
聚合物分散液晶/透射式体全息光栅/衍射效率/波长响应带宽Key words
holographic-polymer dispersed liquid crystal/transmittance volume holographic gratings/diffraction efficiency/wavelength response bandwidth分类
数理科学引用本文复制引用
朱宁,郑继红,申桐,李科,刘悠嵘..采用丙烯酸酯双单体的高空间频率透射式体全息H-PDLC光栅的研制[J].液晶与显示,2024,39(6):752-760,9.基金项目
科技部重点研发计划(No.2018YFA0701802) （No.2018YFA0701802）
国家自然科学基金(No.61975122)Supported by National Key Research and Development Program(No.2018YFA0701802) （No.61975122）
National Natural Science Foundation of China(No.61975122) （No.61975122）
