芳胺基给体型杂化薄膜的二阶非线性光学研究  

Second-Order NLO Properties of Hybrid Films Covalently Incorporated with Aryl-Donor Type Chromophore

作　　者：陈鹭剑[1] 魏栋[1] 王晓忠[1] 崔元靖[2] 钱国栋[2] 

机构地区：[1]厦门大学电子工程系,福建厦门361005 [2]浙江大学材料系,浙江杭州310027

出　　处：《光学学报》2009年第2期552-555,共4页Acta Optica Sinica

基　　金：国家自然科学基金(50802080)资助课题

摘　　要：成功引入芳胺基给体,使用浴胶-凝胶(sol-gel)技术制备出键连型杂化薄膜(F-TPA)。并用原子力显微镜(AFM)研究了F-TPA极化前后的表面形貌。原位光学二次谐波测量表明,此类芳胺基给体型二阶非线性光学杂化薄膜具有良好的非线性光学性能(d_(33)为14.1 pm/V)和较高的取向热稳定性(d_(33)值在115℃仍然能保持稳定,半衰温度达到145℃左右)。结果接近实用要求,充分显示了其在器件实用化进程中的优势。ITO玻璃表面薄膜样品的极化效果远优于普通玻璃片表面的样品。在不使用平面栅网、单针极化的情况下,仍然能在ITO玻璃表面的薄膜获得均匀、饱和的d_(33)分布。To meet the thermal stability requirement for electro-optic device application, a new hybrid second-order NLO film is successfully prepared from chromophore with aryl-donor and examined by atom force microscope （AFM）. The hybrid films exhibites good optical nonlinearity （d33 is 14.1 pm/V）. The d33 value of the film has an onset temperature around 115℃ and a half-decay temperature at 145 ℃ The distributions of d33 on hybrid films on different substrates are also analyzed after corona poling. The measurement of NLO films on ITO substrates presents some advantages over normal glass substrates.

关 键 词：非线性光学 芳胺给体 溶胶-凝胶 极化 

分 类 号：O436[机械工程—光学工程]