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报道了一种基于掺杂纳米银聚合物分散液晶(PDLC)材料的高衍射率全息电控光栅的制备及特性。通过在原有聚合物分散液晶材料体系中添加适量的纳米银颗粒以制备体全息光栅,实验研究了掺杂不同质量比的纳米银颗粒对全息聚合物分散液晶(H-PDLC)体光栅的衍射效率、驱动阈值电压、响应时间的影响。实验结果表明,通过掺杂纳米银材料,能够优化聚合物和液晶两相分离结构,使聚合物与液晶分离更加彻底,显著提高H-PDLC体光栅的一级衍射效率,同时能改善体光栅的电光特性,缩短响应时间。初步分析表明,由于纳米银颗粒的表面等离子体效应和体系折射率匹配的优化改善了H-PDLC光栅的特性。
The preparation and characteristics of a high-diffraction-rate holographic electronically controlled grating based on doped nano-silver polymer dispersed liquid crystal (PDLC) materials are reported. By adding appropriate amount of nano-silver particles into the system of original polymer dispersed liquid crystal to prepare the volume holographic grating, the diffraction efficiency of nano-silver particles doped with different mass ratios to the holographic polymer dispersed liquid crystal (H-PDLC) , Drive threshold voltage, response time. The experimental results show that by doping the nano-silver material, the two-phase structure of the polymer and the liquid crystal can be optimized and the polymer and the liquid crystal can be separated more thoroughly. The first order diffraction efficiency of the H-PDLC bulk grating can be significantly improved, Electro-optical characteristics, shorten the response time. The preliminary analysis shows that the properties of H-PDLC grating are improved due to the optimization of the surface plasmon effect and the system refractive index matching of the nano-silver particles.