20TW亚皮秒激光系统(SPS)与中子产生实验研究  

20 TW Sub-picosecond Laser System (SPS) Applied for the Neutron Experiment

作　　者：谢兴龙[1] 朱健强[1] 刘凤翘 杨镜新[1] 管富义[1] 黄关龙[1] 戴亚平[1] 李美荣[1] 薛绍林[1] 高奇[1] 薛志玲[1] 邵敏[1] 庄亦飞[1] 韩爱妹[1] 彭增云[1] 张伟清[1] 张明科[1] 诸彩龙[1] 林尊琪[1] 郑志坚[3] 丁永坤[3] 陈家斌[3] 王世绩[4] 顾援[4] 王伟[4] 王瑞荣[4] 吴江[4] 

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国家实验室,上海201800 [2]上海激光等离子体研究所高功率激光物理国家实验室,上海201800 [3]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [4]上海激光等离子体研究所,上海201800

出　　处：《中国激光》2003年第10期865-872,共8页Chinese Journal of Lasers

基　　金：国家高技术惯性约束聚变主题 (编号 :2 0 0 2AA84 2 10 0 )资助项目

摘　　要：利用啁啾脉冲放大技术 ,建成了一台基于钕玻璃放大器 10 5 3nm波长的亚皮秒超短脉冲激光系统 (SPS)。系统的输出峰值功率大于 2 0TW ,靶面最高能量可达 16J ,采用离轴抛物面反射镜聚焦 ,在靶面上获得 2× 10 18W /cm2 的激光功率密度 ,以此激光脉冲轰击氘化聚苯乙烯平面靶 ,获得单次发射最高 2 4× 10 4个中子产额。A Nd:doped-glass-based sub-picosecond laser system with the maximum peak power of greater than 20 tara watts and the energy on target surface of 16 J is accomplished by using the chirped laser pulse amplification technology. While the laser pulse is focused by an off-axis parabolic mirror, the power density on target surface of approximately 2×1018 W/cm2 is acquired. In the performed neutron experiment, a C8D8 plate target is placed on the focal spot of the off-axis parabolic mirror. The maximum neutron yield for a single shot reaches 2.4×104. Still some other related problems are discussed.

关 键 词：惯性约束聚变技术 亚皮秒超短脉冲激光 钕玻璃放大器 中子产额 

分 类 号：TN248.1[电子电信—物理电子学] TN249