Author Affiliations
Abstract
1 高功率激光物理国家实验室,中国科学院上海光学精密机械研究所,上海,201800
2 高功率激光物理国家实验室,上海激光等离子体研究所,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
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 2×10 18 W/cm 2 is acquired. In the performed neutron experiment, a C 8D 8 plate target is placed on the focal spot of the off-axis parabolic mirror. The maximum neutron yield for a single shot reaches 2.4×10 4. Still some other related problems are discussed
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 ICF sub-picosecond ultra short laser pulse Nd∶doped glass based amplifier neutron yield Collection Of theses on high power laser and plasma physics
2003, 1(1): 17
Author Affiliations
Abstract
National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
A high power laser system delivering a 20-TW, 0.5 - 0.8 ps ultra-short laser pulse and a 20-J, 500-ps long pulse simultaneously in one shot is completed. This two-beam laser operates at the wavelength of 1053 nm and uses Nd doped glass as the gain media of the main amplification chain. The chirped-pulse amplification (CPA) technology is used to compress the stretched laser pulse. After compression, the ultrashort laser pulse is measured: energy above 16.0 J, S/N contrast ratio ~ 10^(5) : 1, filling factor ~>52.7%. Another long pulse beam is a non-compressed chirped laser pulse, which is measured: energy ~ 20 J, pulse duration 500 ps. The two beams are directed onto the target surface at an angle of 15°.
140.3280 laser amplifiers 190.4970 parametric oscillators and amplifiers Collection Of theses on high power laser and plasma physics
2003, 1(1): 14
1 高功率激光物理国家实验室,中国科学院上海光学精密机械研究所,上海,201800
2 高功率激光物理国家实验室,上海激光等离子体研究所,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
利用啁啾脉冲放大技术，建成了一台基于钕玻璃放大器1053 nm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20 TW，靶面最高能量可达16 J，采用离轴抛物面反射镜聚焦，在靶面上获得2×10 18 W/cm 2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。对中子产生的机理进行了相关的讨论。
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
Author Affiliations
Abstract
National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
A high power laser system delivering a 20-TW, 0.5 - 0.8 ps ultra-short laser pulse and a 20-J, 500-ps long pulse simultaneously in one shot is completed. This two-beam laser operates at the wavelength of 1053 nm and uses Nd doped glass as the gain media of the main amplification chain. The chirped-pulse amplification (CPA) technology is used to compress the stretched laser pulse. After compression, the ultrashort laser pulse is measured: energy above 16.0 J, S/N contrast ratio ~ 10^(5) : 1, filling factor ~>52.7%. Another long pulse beam is a non-compressed chirped laser pulse, which is measured: energy ~ 20 J, pulse duration 500 ps. The two beams are directed onto the target surface at an angle of 15°.
140.3280 laser amplifiers 190.4970 parametric oscillators and amplifiers Chinese Optics Letters
2003, 1(11): 14
本文提出一种新的重复频率电源的电路,其特点是可靠性高,即使产生连续导通,脉冲灯、可控硅、整流二极管等元件也不会损坏;输出电压的重复精度高,一般可达10-3;线路简单,调整、操作、维修均很方便;频率稳定。
