新型有机/无机复合非线性光学材料制备及特性

用溶胶 -凝胶 (Sol_Gel)法制备了含对硝基偶氮苯酚 (NHA)和分散橙 3(DO3)生色团的两种掺杂型有机 /无机复合非线性光学 (NLO)材料 ,并通过FTIR、1H_NMR、UV_VIS、DSC和二次谐波信号 (SHG)测量等方法对它们的制备过程和NLO性能进行了考察 .实验结果表明 :两种掺杂型聚合物膜的最高掺杂量分别为w =7.2 %和w =11.3% ;二阶非线性光学系数 (d33)值分别为 2 .91× 10 - 8esu和 6.14× 10 - 8esu ;两种聚合物膜的常温稳定性都较好 ,90d后d33 值都能保持其初值的 85%以上 ,373K下 10h后d33值也能保持其初值的 50 %左右 .

Synthesis of New Organic/Inorganic Nonlinear Optical Composites and Its Second_Order Nonlinear Optical Properties

Two kinds of doped organic/inorganic hybrid nonlinear optical(NLO) materials containing 4_Nitro_4'_hydroxy azobenzene(NHA) and 4_Nitro_4'_amino azobenzene (DO3) were synthesized by Sol_Gel process. The preparation process and quality of two NLO materials were studied and characterized by FTIR, 　1H_NMR, UV_VIS, DSC and SHG measurements. The results show that the maximum doping amounts of NHA and DO3 in two doped hybrid NLO materials are 7.2% and 11.3% (mass fraction) respectively, and the corresponding second_order NLO coefficients(d33 values) are 2.91×10-8 esu and 6.14×10-8 esu respectively. The two doped materials have better RT and high temperature stability than those prepared by normal method. After 90 days at RT the d33 values can maintain about 85% of their initial values, and after 10 h at 373 K can maintain about 50% of their initial values.