神光Ⅱ激光装置研制 
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Review on Development of Shenguang-Ⅱ Laser Facility
朱健强 1,2,*陈绍和 1,2郑玉霞 1,2黄关龙 1,2刘仁红 1,2唐贤忠 1,3张明科 1,2徐振华 1,2沈丽青 1,2陈庆浩 1,2彭增云 1,2朱宝强 1,2竺庆春 1,2唐永兴 1,2张伟清 1,2唐福林 1,2刘凤翘 1,3毛楚生 1,3朱俭 1,3马伟新 1,2李学春 1,2杨琳 1,2王树森 1,2杨义 1,2蔡希洁 1,2林尊琪 1,2范滇元 1,2王世绩 1,3顾援 1,3邓锡铭 1,2
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
图 & 表
图 1. 神光Ⅱ装置总体结构框图
Fig. 1. Layout of SG-Ⅱ laser facility
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图 2. 神光Ⅱ装置大厅实景
Fig. 2. View of SG-Ⅱ laser facility
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图 3. (a)前端高对比度预整形脉冲;(b)放大输出方波的11次叠加结果
Fig. 3. (a) High-contrast pre-shaping pulse from front end; (b) overlay square waves of 11 measurements for amplified pulses
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图 4. (a)锯齿软边光阑;(b)激光传输工作原理图
Fig. 4. (a) Toothed soft-edge diaphragm; (b) operating principle of laser transmission
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图 5. 三次平衡后8路能量直方图
Fig. 5. Pulse energy histograms from eight beams after three-time balance
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图 6. 新型激光传输列阵式空间滤波器结构图
Fig. 6. Bundles array of spatial filters for laser transmission
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图 7. 同轴双程放大器(a)工作原理图和(b)实物图
Fig. 7. (a) Operating principle diagram and (b) physical view of coaxial double-pass amplifier
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图 8. 用AVM功率平衡调试后8路基频输出脉冲的(a)波形图和(b)能量图
Fig. 8. (a) Waveforms and (b) energy histogram of 1ω0 pulses from eight beams of SG-Ⅱ after power rebalance with AVM
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图 9. (a)大口径钕玻璃工作物质;(b)大口径体吸收激光能量计
Fig. 9. (a) Large aperture Nd∶glass; (b) large aperture bulk absorption calorimeter
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图 10. (a) ICF靶室;(b) XRL靶室
Fig. 10. (a) Target chamber for ICF; (b) target chamber for XRL
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图 11. 终端功率平衡后8束三倍频脉冲(a)波形和(b)能量直方图
Fig. 11. (a) Waveforms and (b) energy histogram of 3ω0 pulses from eight beams after power rebalance
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表 1神光Ⅱ装置部分设计指标
Table1. Partial design specifications of SG-Ⅱ laser facility
| Parameter | Diameter/Beam | Energy/Duration | Waveform | Irradiance uniformity |
|---|
| Design specification | 8 beams, 2 combined 2×2 array; ϕ200 mm for master amplifier; ϕ240 mm for FOA | 1ω0, 1 ns, 6 kJ; 100 ps/800 J; 20 ps/160 J; 3ω0, η>50% | Leading edge <300 ps; quasi-square for 750 J per beam | ±10% (F/3) for ϕ500 μm target surface | | Parameter | Energy fluctuation | Contrast | Angular drift | Divergence for 70% energy | | Design specification | ±15% for 1ω0 | 106 for 1ω0 | ≤5″ RMS | ≤0.05 mrad | | Parameter | Pointing accuracy | Target chambers | Positional accuracy | Duration fluctuation | | Design specification | ±10 μm at target | For ICF and XRL | ±8 μm for target | ±15% | | Parameter | 3ω0 requirement for experiment | Line focusing | Operation capacity | Success ratefor target shooting | | Design specification | 1 ns, 3ω0,45° injected into ping hole of 380 μm, total energy ≥2000 J | Focal line width ≤80 μm; uniformity ±10%, focal line length 10-30 mm | 300 shots per year | 50% for initial; 70% for future; 90% for special experiment |
|
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表 2精密化神光Ⅱ装置与精密OMEGA装置性能对比
Table2. Performance comparison between precision SG-Ⅱ and precision OMEGA laser facilities
| Parameter | Power | Laser shooting accuracy | Front end specification |
|---|
| Powerunbalance | Targetmirror | Pointingposition | Angulardeviation | Stability | Reshapingduration | Front edge |
|---|
| Precision SG-Ⅱ | 5% RMS | F/3.3 | 14.1 μm RMS | 3.7″ RMS | 2% RMS | 108 ps, 1-3 ns | 94 ps | | Precision OMEGA | 5% RMS | F/6.2 | 30 μm RMS | 3.5″ RMS | 2% RMS | 1-5 ns | 100 ps |
|
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表 3神光Ⅱ装置历年物理实验发次统计
Table3. Statistics shots of SG-Ⅱ laser facility for physical experiments over year
| Year | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2006 | 2005 | 2004 |
|---|
| Total No. | 868 | 503 | 545 | 530 | 525 | 562 | 540 | 492 | 425 | 254 | 351 | 430 | 340 | | Success No. | 839 | 486 | 527 | 512 | 503 | 513 | 495 | 439 | 396 | 230 | 270 | 372 | 256 | | Ratio /% | 96.7 | 96.6 | 96.7 | 95.8 | 95.8 | 91.3 | 91.7 | 89.2 | 93.2 | 90.2 | 77.0 | 86.5 | 75.3 |
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朱健强, 陈绍和, 郑玉霞, 黄关龙, 刘仁红, 唐贤忠, 张明科, 徐振华, 沈丽青, 陈庆浩, 彭增云, 朱宝强, 竺庆春, 唐永兴, 张伟清, 唐福林, 刘凤翘, 毛楚生, 朱俭, 马伟新, 李学春, 杨琳, 王树森, 杨义, 蔡希洁, 林尊琪, 范滇元, 王世绩, 顾援, 邓锡铭. 神光Ⅱ激光装置研制[J]. 中国激光, 2019, 46(1): 0100002. Zhu Jianqiang, Chen Shaohe, Zheng Yuxia, Huang Guanlong, Liu Renhong, Tang Xianzhong, Zhang Mingke, Xu Zhenhua, Shen Liqing, Chen Qinghao, Peng Zengyun, Zhu Baoqiang, Zhu Qingchun, Tang Yongxing, Zhang Weiqing, Tang Fulin, Liu Fengqiao, Mao Chusheng, Zhu Jian, Ma Weixin, Li Xuechun, Yang Lin, Wang Shusen, Yang Yi, Cai Xijie, Lin Zunqi, Fan Dianyuan, Wang Shiji, Gu Yuan, Deng Ximing. Review on Development of Shenguang-Ⅱ Laser Facility[J]. Chinese Journal of Lasers, 2019, 46(1): 0100002.
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