摘要
中国科学院上海光学精密机械研究所(简称“上海光机所”)是中国最早开展高功率激光系统及其应用研究的单位。在建所60周年之际,本文简要回顾了上海光机所建造的系列高功率激光装置和相关技术发展,重点介绍了现今运行的神光Ⅱ多功能综合实验平台的性能和技术进步,以及利用此平台取得的若干具有标志性的重要物理实验成果,最后展望了未来高峰值功率激光技术与工程发展的基本问题和趋势。
Significance Laser driver is known to be the most mature tool for inertial confinement fusion(ICF)research.The high-power Nd glass laser driver is one of the most representative large-scale optical engineering projects,and its scale and overall performance represent the highest level of a nation’s science and technology.Many countries worldwide have built laser drivers to conduct ICF research,and some drivers have gone through several generations.The scale of the driver is continuously growing,and the laser performance is constantly improving.China is also an important player in the international stage of laser fusion research.The Shanghai Institute of Optics and Mechanics(SIOM)is not only the cradle of China’s laser fusion,but also the birthplace of the Shenguang device,simplified as SG.The SIOM developed a relatively complete support system with unit technologies such as large-aperture Nd glass,pulse xenon flash lamps,thin films,and optical processing.Early research and development included the creation of a 108 W laser facility and a six-beam laser system.To further develop laser fusion research in China,a joint laboratory named National Laboratory on High Power Laser and Physics(NLHPLP)was established at the SIOM,thus ushering a new era of laser fusion research in China.Subsequently,the joint laboratory set up a series of laser facilities(Fig.1),including the No.12 laser facility(known as the SGⅠfacility),SGⅡeight-beam facility,multifunctional SGⅡ9th laser facility,SGⅡUP facility(including the SG 9th high-energy PW system),and SGⅡfs 5 PW laser facility.The No.12 laser facility played a decisive role in China’s laser fusion research,demonstrating that China had become one of the few countries in the international high-power laser field with comprehensive research and development capabilities at that time.After combining the series of facilities,a multifunctional comprehensive platform,with the SGⅡfacility as the core,has been formed.It has supported many physical experiments and maintained efficient operation for many years.This platform has made important contributions to the research and development of fusion physics in China,and it has an important international status.On the occasion of the 60th anniversary of the establishment of the SIOM,a brief review of the series of high-power laser facilities built and the related technology development are presented.Progress The SGⅡcomprehensive platform is the crystallization of the collective wisdom of several generations,reflecting the persistent efforts of hundreds of scientists and engineering technicians.Each facility has its own unique features.During the development of the SGⅡeight-beam(Fig.5),a series of technical difficulties were independently addressed,and 15 new unit technologies were innovatively integrated.The innovative design and development of a switchless coaxial double-pass main amplification were successfully explored for the first time internationally.The SGⅡ9th system is not only the second successful high-energy probe laser system after that built in the United States but also has the significant characteristics of high energy output,multi-functionality,and high-performance operation.As the first physical experimental platform in China to support fast ignition ICF research,the SGⅡUP facility consists of eight nanosecond laser beams and one kilojoule-level picosecond laser beam.The entire amplification chain of the nanosecond laser beam adopts a multi-pass amplification optical structure of four pass cavity amplification+two pass booster amplification+large aperture PEPC.The high-energy picosecond pulsed laser system adopts the overall technical route of high-power optical parametric chirped pulse amplification combined with Nd glass chirped pulse amplification.The SGⅡfs 5 PW facility is entirely based on three-level non collinear OPCPA to achieve a 150 J/30 fs laser pulse output at the target wavelength of 808 nm.Conclusions and Prospects Aiming at the major strategic needs of the country,the NLHPLP has two main development lines:research and development of high-power laser technology and facilities and efficient operation of the facilities.In addition,the laboratory puts special emphasis on international cooperation and exchanges,providing hundreds of experiments for international users.The NLHPLP will continue to play a role in the future development of laser ICF projects,opening up new content and creating its own unique core technology according to future needs.
作者
朱健强
李学春
朱俭
朱宝强
马伟新
周申蕾
卢兴强
范薇
张攀政
刘志刚
王利
杨琳
刘代中
唐顺兴
孙明营
杨朋千
谢兴龙
朱坪
孙美智
梁潇
张国文
欧阳小平
张艳丽
张秀平
王冰艳
林尊琪
范滇元
Zhu Jianqiang;Li Xuechun;Zhu Jian;Zhu Baoqiang;Ma Weixin;Zhou Shenlei;Lu Xingqiang;Fan Wei;Zhang Panzheng;Liu Zhigang;Wang Li;Yang Lin;Liu Daizhong;Tang Shunxing;Sun Mingying;Yang Pengqian;Xie Xinglong;Zhu Ping;Sun Meizhi;Liang Xiao;Zhang Guowen;Ouyang Xiaoping;Zhang Yanli;Zhang Xiuping;Wang Bingyan;Lin Zunqi;Fan Dianyuan(National Laboratory on High Power Laser and Physics,Shanghai 201800,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Institute of Laser Plasma,China Academy of Engineering Physics,Shanghai 201800,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2024年第11期3-21,共19页
Chinese Journal of Lasers
基金
中国科学院前瞻战略科技先导专项(XDA25020000)。
关键词
惯性约束聚变
神光装置
激光工程
激光光学
inertial confinement fusion
SG facility
laser engineering
laser optics
