采用CO2激光对镀金K9玻璃表面的二甲基硅油污染物进行清洗, 在激光器单点作用模式下, 分别研究了激光功率和作用时间对清洗效果的影响；并研究了连续扫描工作模式下的激光清洗效果。采用光学显微镜和傅里叶变换红外光谱仪表征激光清洗效果, 研究结果表明：通过良好的控制激光参数, 采用CO2激光清洗二甲基硅油具有明显的效果；此种非接触式清洗方式可确保K9玻璃表面的金膜完好无损。采用有限元分析软件模拟计算了激光功率和作用时间对清洗过程中温度的影响, 计算结果与实验结果规律一致。

CO2 laser was utilized to clean the dimethylsilicone contamination on the surface of gilded K9 glass. In the case of point to point laser cleaning, the effects of laser power and radiation time were studied, respectively. Then the laser cleaning effect was studied in the scanning mode. Optical microscope and Fourier transform infrared spectrometer were used to characterize the cleaning effects. The results showed that CO2 laser could effectively remove the dimethylsilicone by properly controlling the laser parameters. In addition, this non-contact cleaning method can clean the gold films on the K9 glass without damage. Finite element analysis code was used to simulate the effects of laser power and radiation time on the temperature of samples. The simulation results were consistent with the experimental ones.