研究了几种红外窗口材料的高重复频率Ｎｄ∶ＹＡＧ激光和Ｃｕ蒸气激光体损伤规律，发现样品损伤有明显积累效应。经过分析，发现高重复频率激光损伤是一个微观损伤积累过程，并引入吸收元的概念，建立了一个简单的损伤积累模型。利用激光预辐照技术，提高了材料的损伤阈值 The damage rules of Nd:YAG laser and Cu vapor laser with high repetition rate of several infrared window materials were studied. It was found that there was a significant accumulation effect of sample damage. After analysis, it is found that high repetition rate laser damage is a micro-damage accumulation process, and the concept of absorption element is introduced to establish a simple damage accumulation model. Pre-irradiation using laser technology to improve the material damage threshold