随着光电技术的发展,非线性光学材料的需求将日益增加,有机倍频材料,与无机材料相比,具有非线性光学系数高,光学响应快以及损伤阀值高等优点,是近年来激光材料领域的热门研究课题之一.一般认为,非线性光学效应是由于物质受光波照射后,电子在一定方向上发生移动,产生超极化效应所引起的.有机共轭体系中,分子平面化,π电子趋于离域,往往 With the development of optoelectronic technology, the demand of nonlinear optical materials will increase day by day. The organic frequency doubling materials, compared with inorganic materials, have the advantages of high nonlinear optical coefficient, fast optical response and high damage threshold. In recent years, laser materials Is one of the hot topics in the field.It is generally believed that the nonlinear optical effect is due to the phenomenon of hyperpolarization caused by the movement of electrons in a certain direction after being irradiated by a light wave.In the organic conjugated system, π electron tends to leave the domain, often