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通过准分子激光(XeCl,308nm,20ns)在MgO(100)单晶衬底上制备了不同掺杂浓度的Ag:BaTiO3纳米复合薄膜,通过X射线衍射和X射线光电子能谱对薄膜的结构和组分进行了表征.在430nm和470nm附近观测到了不同浓度Ag纳米颗粒引起的等离子体吸收峰,通过z扫描技术对复合薄膜的三阶非线性光学特性进行了测量,并对其光学非线性的增强机制进行了讨论.
BaTiO3 nanocomposite films with different doping concentration were prepared on MgO (100) single crystal substrate by excimer laser (XeCl, 308nm, 20ns). The structure and properties of the films were characterized by X-ray diffraction and X-ray photoelectron spectroscopy Components were characterized in the vicinity of 430nm and 470nm observed at different concentrations of Ag nanoparticles caused by the plasma absorption peak by z scanning technology composite film third-order nonlinear optical properties were measured and its optical nonlinear Enhancement mechanisms were discussed.