Study On The Structure Of Metallic Nano-particle And The Optical Nonlinearity Of Its Dielectric Composite

The dissertation aimed to investigate the geometrical microstructure and local structure of metallic nano-particle prepared by ion implantation, especially the different nonlinear optical property of metallic nano-particles synthesized in various conditions.The main work is summarized as follows:1. Based on crystalline or noncrystlline matrix, the composite materials of metallic nano-particle and dielectric were prepared. They were characterized by transmission electronic microscope and UV-vis-NIR spectrophotometer.2. The synchrotron extended X-ray absorption spectroscopy (EXAFS) was used to study the influence of implantation dose on the micro local structure of metallic nano-particles.3. The modification effects of metallic nano-particle on the nonlinear optical property of non-crystal were studied by Z-Scan technique. The different modification effects in resonance and non-resonance mode were analyzed.4. The modification effects of various kinds of metallic nano-particles on the nonlinear optical property of crystalline dielectric were studied by Kerr-lens autocorrelation technique (KLAC).