有机-无机ZrO_2纳米复合光致聚合物的全息特性

Holographic characteristics of organic-inorganic ZrO_2 nano-composite photopolymer

研究了一种掺入ZrO2纳米颗粒的丙烯酰胺基光致聚合物的全息特性。用Ar+Kr+激光器647nm波长的光对光聚物进行曝光,实验表明,在纯有机光致聚合物中掺入ZrO2纳米颗粒后,折射率调制度从1.88×10-3提高到2.28×10-3,缩皱率从3.2%降低到0.8%。说明有机-无机ZrO2纳米复合光致聚合物材料,是高密度全息存储所需的比较理想的存储材料。

Holographic characteristics of the ZrO2-nanoparticles-doped polyvinyl alcohol/acrylamide（PVA/AA）-based photopolymer are studied.It is illuminated under the incident wavelength of 647 nm from Ar＋Kr＋ laser.The experimental results show that the incorporation of ZrO2 nanoparticles leads to a significant improvement of refractive index modulation and a decrease of the shrinkage：the refractive index modulation is increased from 1.88×10-3 to 2.28×10-3 and the shrinkage is decreased from 3.2% to 0.8%.All of the results demonstrate that the organic-inorganic nanocomposite photopolymer will be the most appropriate candidate in the future holographic system.