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 中国科学院上海光学精密机械研究所 高功率激光物理重点实验室, 上海 201800
2 中国科学院大学, 北京 100049
To overcome the problem of cleanliness in the laser′s internal cavity, a glass cavity design for a Nd: glass slab amplifier was proposed, which uses UV-stop quartz glass for its main structure.The design of the main structure of the glass cavity and the sealing are optimized, and metal-coated surfaces are used to prevent light from escaping.The cleanliness of the stainless steel cavity of the slab amplifier of the SG-II-UP laser and the glass cavity of a 100 slab amplifier were compared; the cleanliness of the glass cavity was found to be 70% better than that of the stainless cavity. Further, advanced system analysis program was used to simulate the designed amplifier, with the pumping ratio of the Nd: glass in the glass cavity being increased by 8.84%.Thus, the glass cavity decreases the production of aerosols and enhances the pumping ratio of the Nd∶glass.
激光器 高功率固体激光驱动器 片状放大器 结构设计 气溶胶 Laser High power solid-state laser driver Slab amplifier Structural design Aerosol particle Collection Of theses on high power laser and plasma physics
2016, 14(1): 1114001
Author Affiliations
Abstract
1 中国科学院上海光学精密机械研究所 高功率激光物理重点实验室, 上海 201800
2 中国科学院大学, 北京 100049
To overcome the problem of cleanliness in the laser′s internal cavity, a glass cavity design for a Nd: glass slab amplifier was proposed, which uses UV-stop quartz glass for its main structure.The design of the main structure of the glass cavity and the sealing are optimized, and metal-coated surfaces are used to prevent light from escaping.The cleanliness of the stainless steel cavity of the slab amplifier of the SG-II-UP laser and the glass cavity of a 100 slab amplifier were compared; the cleanliness of the glass cavity was found to be 70% better than that of the stainless cavity. Further, advanced system analysis program was used to simulate the designed amplifier, with the pumping ratio of the Nd: glass in the glass cavity being increased by 8.84%.Thus, the glass cavity decreases the production of aerosols and enhances the pumping ratio of the Nd∶glass.
激光器 高功率固体激光驱动器 片状放大器 结构设计 气溶胶 Laser High power solid-state laser driver Slab amplifier Structural design Aerosol particle Collection Of theses on high power laser and plasma physics
2016, 14(1): 1114001
中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
针对高功率固体激光驱动器的安全运行, 提出了覆盖驱动器建设全过程的污染控制方法, 详细介绍了洁净清洗、洁净检测、洁净保护等保障污染控制效果的技术手段, 并介绍了神光-Ⅲ主机装置片状放大器洁净度提升所采取的技术途径, 以及片状放大器光照清洗实验中气溶胶等级随闪光灯照射次数的变化情况。实验结果表明, 神光-Ⅲ主机装置的洁净水平与美国国家点火装置(NIF)接近且优于其他同类装置, 洁净度的大幅提升为装置的安全运行提供了有力保障。
固体激光驱动器 片状放大器 洁净度 污染控制 solid-state laser driver slab amplifier cleanliness contamination control
1 山东大学晶体材料国家重点实验室,济南,250100
2 中国科学院上海光学精密机械研究所,上海,201800
本文利用集成光学和光纤技术制作了集成光学调制器,驱动调制器的电压仅为4伏,配之以高稳定的、LD泵浦的单纵模振荡源和任意整形电脉冲源,大大提高了ICF固体激光驱动器前级整形系统对激光脉冲整形的稳定性和灵活性.
集成光学 调制器 整形系统 ICF固体激光驱动 integrated optics modulator shaping system ICF solid-state laser driver
1 山东大学晶体材料国家重点实验室,济南,250100
2 中国科学院上海光学精密机械研究所,上海,201800
本文利用GaAs场效应晶体管电压控制电流和开关特性成功研制了任意整形电脉冲发生器,该整形电脉冲发生器的每个基元电路产生的基元电脉冲形状和宽度与加在栅极的触发信号相同,幅度由加在GaAs场效应晶体管上的负偏压决定,各基元电路产生的用于叠加的基元电脉冲相互独立,使计算机控制栅极偏压进而控制整形电脉冲的形状成为可能.
任意整形电脉冲发生器 ICF固体激光驱动器 GaAs场效应晶体管 基元电路 the generator of arbitrary shaping electrical puls ICF solid-state laser driver GaAs field-effect transistor （FET） basic circuit
