高能皮秒拍瓦激光研究进展、技术挑战及发展趋势  

Research Progress,Technical Challenges,and Development Trends in High⁃Energy Picosecond Petawatt Lasers

作　　者：姜有恩[1] 杨朋千[1] 潘雪[1] 张艳丽[1] 郭亚晶[1] 朱坪 李大为[1] 崔勇[2] 欧阳小平[1] 陶华[1] 姜卓偲[1] 樊全堂[1] 华能[1] 唐顺兴[1] 肖奇 张栋俊 刘东宁 黄鹏飞 李祖强 朱宝强[1] 马伟新[2] 朱俭[2] 李学春[1] 朱健强[1] Jiang Youen;Yang Pengqian;Pan Xue;Zhang Yanli;Guo Yajing;Zhu Ping;Li Dawei;Cui Yong;Ouyang Xiaoping;Tao Hua;Jiang Zhuocai;Fan Quantang;Hua Neng;Tang Shunxing;Xiao Qi;Zhang Dongjun;Liu Dongning;Huang Pengfei;Li Zuqiang;Zhu Baoqiang;Ma Weixin;Zhu Jian;Li Xuechun;Zhu Jianqiang(Key Laboratory on High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Institute of Laser Plasma,Chinese Academy of Engineering and Physics,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理联合实验室,上海201800 [2]中国工程物理研究院上海激光等离子体研究所,上海201800 [3]中国科学院大学材料与光电研究中心,北京100049

出　　处：《中国激光》2024年第11期92-119,共28页Chinese Journal of Lasers

基　　金：中国科学院战略性先导科技专项课题(XDA25020103,XDA25020105,XDA25020203)。

摘　　要：兼具高峰值功率和高脉冲能量两大特征的皮秒拍瓦激光与物质相互作用的物理效果跟脉冲信噪比、聚焦功率密度和时空调控精度等关键因素直接相关。深入研究了这三大因素相应的受限机制、关键技术以及神光II升级装置中皮秒拍瓦激光等典型代表的最新技术进展,对于提升拍瓦激光性能具有指导作用。针对皮秒拍瓦激光的负载受限问题,从元器件损伤阈值、光场退化和洁净控制等方面进行了分析,并综述了基于等离子体光学的脉冲放大及压缩技术在突破高功率激光负载瓶颈的新研究动向。此外,皮秒拍瓦激光要从实验室走向更广泛的应用,还需要持续推进高效高能重复频率皮秒拍瓦激光的技术攻关。Significance With a high peak power and high pulse energy,the physical effect of the interaction between picosecond petawatt laser and matter is related to key factors such as pulse signal-to-noise ratio,focusing power density,and spatio-temporal control accuracy.This paper presents a comprehensive study of these three factors,as well as the associated limiting mechanism,key technologies,and latest development of the SG-II-UP picosecond petawatt laser.This provides has a guiding role in improving the performance of petawatt lasers.For the load limitation of picosecond petawatt lasers,the damage threshold of optics,optical field degradation,and cleanliness control are analyzed,and the new trend of pulse amplification and compression technology based on plasma optics in exploring the load bottleneck of the high-power laser is reviewed.In addition,advancing the high-efficiency,high-energy and high-repetition-rate picosecond petawatt laser technology research is crucial to the transition of picosecond petawatt lasers from laboratory to a wider range of applications.Progress This study aimed to improve the overall performance of the SG-II-UP picosecond petawatt laser.The intricate challenge of signal-to-noise ratio in the pulse generation system of the picosecond petawatt laser was systematically addressed.Through the engineering application of picosecond optical parametric amplification technology,a significant reduction in parametric fluorescence was achieved,amounting to four orders of magnitude.Concurrently,two distinct groups of pre-pulses,attributed to the non-linear process between the primary pulse and post-pulses associated with the B-integral in a nanosecond optical parametric amplification,were identified and eliminated.This resulted in a three-orders-of-magnitude reduction in the pre-pulse amplitude.The optimization of key parameters of the adaptive optics system and the implementation of a comprehensive closed-loop control strategy for the entire laser beamline significantly improved the typical focal spo

关 键 词：激光技术 拍瓦激光 信噪比 聚焦功率密度 时空调控精度 皮秒负载 

分 类 号：O437[机械工程—光学工程]