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采用溶胶－凝胶方法制备了Ａｕ掺杂的ＴｉＯ２／ＳｉＯ２复合薄膜（厚度约为１．０μｍ）。Ｘ－ｒａｙ衍射分析表明，Ａｕ的颗粒镶嵌在ＴｉＯ２／ＳｉＯ２复合薄膜的玻璃网络中。谢乐公式计算给出Ａｕ的颗粒大小约为１０ｎｍ。采用Ｚ－Ｓｃａｎ测量技术得此薄膜的光学非线性折射率为１．０９×１０－７ｅｓｕ。
Au-doped TiO2 / SiO2 composite thin films (thickness of about 1.0μm) were prepared by sol-gel method. X-ray diffraction analysis showed that Au particles were embedded in the glass network of TiO2 / SiO2 composite films. Xie Le formula gives the particle size of Au is about 10nm. The optical nonlinear refractive index of this film was 1.09 × 10-7esu using Z-Scan measurement technology.