【摘要】 高功率固体激光装置的负载问题是制约装置建设与运行的瓶颈问题。在高通量紫外纳秒激光辐照下，熔石英后表面的损伤不断产生和增长，严重限制了装置的负载能力。在提升熔石英抗损伤性能的基础上修复既有损伤，循环使用光学元件，是现阶段提升装置负载能力的主要手段。主要介绍了国内外近年来在熔石英损伤的规律与机制、光学元件循环处理的支撑技术以及提升负载能力的新材料与新技术方面所取得的重要进展。更多还原

【Abstract】 The loading capability is a bottle-neck challenge in both the construction and operation of highpower laser facilities. Under high-fluence, nanosecond laser irradiation in the ultraviolet regime, damage sites are constantly witnessed initiating and growing on the rear surface of fused silica, severely limiting the loading capability of high-power lasers. Optics recycling which is based on improving the damage resistance of fused silica and mitigating the as-grown damage sites is currently the major strategy for improving the loading capability. This paper introduces the recent progress in the laws and mechanism of laser-induced damage in fused silica, the essential techniques supporting the optical recycling strategy and the new materials and techniques developed to improve the loading capability of high-power laser facilities.更多还原