【摘要】 利用光热偏转技术对红外窗口材料进行了激光损伤实时研究，通过对硅片、加半反保护膜的硅片和加全反保护膜的硅片的损伤过程的研究，发现介质保护膜能大大提高硅窗口的激光损伤阈值，同时发现了全反介质保护膜的激光损伤逐层的破坏过程更多还原

【Abstract】 In situ investigations on the laser induced damage of the infrared windows by photothermal displacement technique (PDT) were described by the studies on the damage process of the Si window, Si window with half reflectancee protecting films and Si window with full reflectancee protecting films. It was found that the laser induced damage threshold of Si window can be highly increased by using dielectric protecting films,and the damage process of full reflectance protecting films is conducted layer by layer.更多还原