论文部分内容阅读
采用旋涂法制备了一种七甲川菁染料的超薄膜,利用原子力显微和紫外-可见吸收光谱等技术对膜的形貌和线性光谱性质进行了研究表征,结果表明染料在薄膜中形成了有序而稳定的H-聚集体.前向简并四波混频技术研究表明由于分子的聚集作用引起三阶非线性极化率的增大,利用集体谐振子模型初步分析和讨论了产生非线性效应增强的内在机制.
An ultrathin film of Heptachrometraine dye was prepared by spin coating. The morphology and linearity of the film were characterized by means of atomic force microscopy and ultraviolet-visible absorption spectroscopy. The results showed that the dye formed in the film Order and stable H-aggregates.The study of forward degenerate four-wave mixing technique shows that due to the aggregation of molecules, the third-order nonlinear polarizability increases, and the collective harmonic oscillator model is used to analyze and discuss the non-linear The intrinsic mechanism of enhanced linearity.