可溶性聚(2,5-二己氧基)对苯乙炔三阶非线性光学特性  

Third-order Nonlinear Optical Properties of A Soluble Poly(2,5-dihexyloxy)-p-phenylene vinylene

作　　者：李宝铭[1] 吴洪才[1] 高潮[1] 易文辉[1] 孙建平[1] 

机构地区：[1]西安交通大学电信学院光电技术与太阳能研究所,陕西西安710049

出　　处：《光电子．激光》2005年第7期809-811,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60277002);西安交通大学科研基金资助项目

摘　　要：报道了利用脱氯化氢反应制备可溶性聚(2,5二己氧基)对苯乙炔(PDHOPV),这种聚对苯乙炔(PPV)衍生物在波长450～550nm范围内具有强的光学吸收,最大吸收峰位于499nm处。采用简并四波混频(DFWM)技术对PDHOPV薄膜的非线性光学特性进行研究。结果表明:PDHOPV具有大的三阶非线性光学特性;激发波长为532nm的共振三阶非线性系数和1.064μm的非共振三阶非线性系数分别为9.6×10-10esu和2.1×10-11esu;电子共振增强有利于提高三阶非线性光学系数。A soluble poly(2,5-dihexyloxy)-p-phenylene vinylene (PDHOPV) was synthesized by dehydrochlorination reaction, which had the remarkable absorption at the wavelength in the range of 450-550 nm and the absorption maximum at 499 nm was also observed. The third-order nonlinear optical properties of PDHOPV films were studied by degenerate four-wave mixing (DFWM) technique that was carried out at 532 nm and 1.064 μm individually. By using the relative measurement method, the resonant value of 9.6 × 10-10 esu and the off-resonate value of 2.1 × 10-11 esu of third-order nonlinear optical coefficient were measured respectively. It was confirmed that the resonant of electron could enhance the third-order nonlinear optical coefficient greatly.

关 键 词：非线性光学 聚(2 5-二己氧基)对苯乙炔(PDHOPV) 简并四波混频(DFWM) 三阶非线性系数 

分 类 号：TN304.52[电子电信—物理电子学] O631[理学—高分子化学]