一种新型金属配合物的非线性光学特性的研究

Nonlinear Optical Properties of a New Metal Complex

利用单光束Z扫描技术,在波长532nm、脉宽8ns的条件下研究了新型的金属有机配合物[CuCl2(BOEP)2]的三阶非线性光学性质。由实验结果发现配位化合物虽然没有明显的非线性吸收性质,但是其三阶非线性折射率比相应配体大很多。探讨了配合物的结构和其三阶非线性光学性质的关系,认为配位化合物的π共轭离域体系的增大和金属中心离子与配体之间的电子转移是配合物具有更大非线性折射率的主要原因。选择具有π键的配体与金属离子合成为配合物,使其非线性效应明显增强,这对合成性能更好的非线性材料有一定的参考价值。

The complex of CuCl2 with BOEP is synthesized and the third-order nonlinear properties of CuCl2 （BOEP）2 is determined by the well-known Z-scan technique at 532 nm with 8 ns duration. And it was found that the third-order nonlinear refractive index of complex is much larger than that of the ligand. In addition, the relationship between the structure and the third-order nonlinear properties of this complex is discussed. The main reason of complex with greater nonlinear refractive index is that the complex has larger conjugated delocalized system and there are electrons shifting between ligand and metal atom. So the nonlinear properties of complex can be improved by synthesizing metal ions and the ligand whose structure contains conjugated delocalized system.