8路神光Ⅱ装置在基频和三倍频条件下工作研究进展(英文)  

Successful operation of 8 beam SG-Ⅱlaser facility for both 1ω_0 and 3ω_0 output

作　　者：林尊琪[1] 王世绩[1] 范滇元[1] 顾援[1] 郑志坚[2] 朱健强[1] 朱俭[1] 蔡希洁[1] 黄关龙[1] 戴亚平[1] 杨义[1] 

机构地区：[1]高功率激光物理国家实验室,上海201800 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2002年第3期403-407,共5页High Power Laser and Particle Beams

基　　金：National High-Tech Inertial Confinement Fusion Committee

摘　　要：简要描述在神光 装置上进行的部分物理实验 ,为神光 激光装置提供光学性能指标。神光 激光装置已经能在三倍频、外转换效率高于 6 0 %的条件下常规输出三倍频能量。穿孔实验表明 ,蓝光 (3ω0 )的光束质量 ,特别是远场旁瓣分布质量 ,甚至于要好于红光 (1ω0 光 )。用 10 0 ps脉冲宽度的红光输出打爆推内爆的氘氚球靶 ,获得单发最高中子产额 4× 10 9个。基频线聚焦打靶 ,获得类 Ni银 X光激光饱和输出 ,并成功应用于激光等离子体密度测量 ,观测到莫尔条纹移动。SG-Ⅱlaser facility has recently been able to deliver 3ω 0 (blue) light with the outer conversion efficiency of ≥60% during its routine operation. The pinhole injection experiment this year indicated the optical quality of the blue, especially the side lobe distribution, was even better than that of the red (1ω 0). With the 100ps red light output, DT fuel exploding pusher experiment delivered the maximum neutron yields of 4×10 9 per shot. The red light line focus has led to the Ni like Ag X-ray laser's saturation and the successful observation of the Moire fringe deflection while the laser was applied to a separated laser plasmas. This paper presents the optical features of SG-Ⅱlaser facility and describes some of the experiments conducted on the facility.

关 键 词：8路神光Ⅱ装置 基频 三倍频 高功率激光装置 爆推靶 莫尔条纹 激光惯性约束聚变 等离子体测量 

分 类 号：O536[理学—等离子体物理] TL65[理学—物理]