新型有机非线性光学材料的制备及性能研究  

Preparation and optical properties of novel organic NLO material

作　　者：唐翔[1] 唐先忠[1] 王洋[1] 赵波[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《光电子．激光》2010年第8期1196-1198,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60771044)

摘　　要：合成了一种新型含呋喃共轭桥的有机二阶非线性光学生色团分子,用IR、1H-NMR和元素分析表征了其结构。热失重分析(TGA)结果表明,化合物的热分解温度为272℃。利用溶致变色法对材料的超极化率μβ值进行了测量,在1 064 nm激光波长下,材料的μgβ值达24 898×10-48esu。将材料作为客体掺杂于聚砜(PSU)中,用旋涂成膜法制成薄膜,对薄膜进行电晕极化后用二次谐波法(SHG)测量其二阶非线性光学系数d33,在激光基频波长为1 064 nm时,测得d33=70 pm/V。A novel organic nonlinear optical chromophore containing furan conjugating bridge has been synthesized and characterized by FT-IR,1H-NMR and elemental analysis.The decomposition temperature as high as 272 ℃ is determined by TGA testing.The hyperpolarizability（μβ） value as large as 24 898e-48 esu at 1 064nm is measured by solvatochromism method.The chromophore is doped into PSU and polymer thin film is fabricated by spin-casting method.The film is corona poled to induce a non-centrosymmetric organization of molecule dipole.The second-order nonlinear coefficient d33 value of 70 pm/V at 1 064 nm is measured by second harmonic generation method.

关 键 词：非线性光学 生色团 溶致变色法 二次谐波法(SHG) 

分 类 号：O621[理学—有机化学] TN20[理学—化学]