1 高功率激光物理联合实验室, 上海 201800
2 中国科学院上海光学精密机械研究所, 上海 201800
3 中国工程物理研究院上海激光等离子体研究所, 上海 201800
神光Ⅱ大型固体高功率激光装置是我国激光驱动器发展历史的里程碑, 其成功研制使我国高功率固体激光工程与技术、聚变物理与基础物理研究实现了全面且本质的跨越式发展。简要概述了神光Ⅱ激光装置研制中创新发展的大量工程方案与技术手段, 举例介绍了神光Ⅱ激光装置在近20年来的高质量运行中取得的众多有国际影响力的研究成果。经多方支持和多年持续发展, 已经形成数万焦耳级纳秒激光装置、皮秒拍瓦以及飞秒拍瓦激光装置等, 这些装置是我国惯性约束核聚变、强场物理、高能量密度物理等研究领域中重要的物理实验核心平台之一。
激光技术 惯性约束核聚变 固体激光驱动器 聚变点火 高功率激光
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
1 高功率激光物理国家室验室,上海,201800
2 中国科学院上海光学精密机械研究所,上海,201800
对神光Ⅱ高功率像传递激光传输系统中可能产生的鬼像进行了计算与分析,对系统中可能被鬼像损伤位置上的光学件作了重整安排.
鬼像 二次跟随性鬼像 高功率激光系统
