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为了改善高功率激光装置的靶面辐照均匀性, 在神光-Ⅲ原型装置的一路光上开展了结合光谱色散平滑(SSD) 和连续相位板(CPP)的高通量实验研究．实验基于调制频率9.2 GHz的体相位调制器开展, 输出的相位调制脉冲光谱展宽稳定, 脉冲波形顶部剩余调制很小. 结果表明SSD色循环数为1时预放和主放各级空间滤波器过孔顺利, 包含焦斑95%能量的通量对比度由窄带时的1.71下降到加SSD和CPP时的0.47．三倍频光脉宽1 ns, 能量1115 J时, CPP和终端光学组件元件未见损伤．通过实验解决了在高功率激光装置上采用SSD和CPP进行靶面均匀辐照的若干关键技术, 为将其应用于物理实验奠定了坚实基础.To improve laser irradiation uniformity, experimental research on smoothing by spectral dispersion (SSD) and continuous phase plate (CPP) is carried out on the technical integration line (TIL). A bulk phase modulator with 9.2 GHz modulation frequency is adopted. The output spectrum of the phase modulator is stable and the residual amplitude modulation is quite small. The experimental results indicate that when the number of color cycles (Nc) is adopted to be 1, imposing of SSD in this divergence does not lead to pinhole closure in the spatial filters of the preamplifier and main amplifier. The contrast of the focal spot with 95% energy included with SSD and CPP drops to 0.47 compared with 1.71 without SSD and CPP. When the pulse width of the third harmonic wave is 1 ns and its energy is 1115 J, no damage is found in CPP and other final optics. The experiment solves some key techniques by using SSD and CPP on high-power laser facilities, and provides sound basis for the upcoming physics experiment.
[1] Lehmberg R H, Obenschain S P 1983 Opt. Comm. 46 27
[2] KatoY, Mima K, Miyanaga N, Arinaga S, Kitagawa Y, NaktsukaM, Yamanka C 1984 Phys. Rev. Lett. 53 1057
[3] Véron D, Ayral H, Gouédard C, Husson D, Lauriou J, Martin O,Meyer B, Rostaing M, Sauteret C 1988 Opt. Comm. 46 42
[4] Skupsky S, Short R W, Kessler T, Craxton R S, Letzring S, SouresJ M 1989 J. Appl. Phys. 66 3456
[5] Lindl J D, Amendt P, Berger R L, Glendenning S G, Glenzer SH, Haan S W, Kaufmann R L, Landen O T, Suter L J 2004 Phys.Plasmas 11 339
[6] Jiang X, Zhou S, Lin Z 2007 J. Appl. Phys. 101 023110
[7] Skupsky S, Craxton R S 1999 Phys. Plasmas 6 2157
[8] Haynam C A, Wegner P J, Auerbach J M, Bowers M W, DixitS N, Erbert G V, Heestand G M, Henesian M A, Hermann M R,Jancaitis K S, Manes K R, Marshall C D, Mehta N C, Menapace J,Moses E,Murray J R, Nostrand MC, Orth C D, Patterson R, SacksR A, Shaw M J, Spaeth M, Sutton S B, Williams W H, WidmayerC C, White R K, Yang S T, van Wonterghem B M 2007 Appl. Opt.46 3276
[9] Morice O 2003 Opt. Eng. 42 1530
[10] Jiang X J, Zhou S L, Lin Z Q, Zhu J 2006 Acta Phys. Sin. 55 5824(in Chinese) [江秀娟, 周申蕾, 林尊琪, 朱俭 2006 物理学报 55 5824]
[11] Li P, Su J Q, Ma C, Zhang R, Jing F 2009 Acta Phys. Sin. 58 6210(in Chinese)[李平, 粟敬钦, 马驰, 张锐, 景峰 2009 物理学报 58 6210]
[12] Zhang R, Wang J J, Su J Q, Liu L Q, Deng Q H 2010 Acta Phys.Sin. 59 1088 (in Chinese) [张锐, 王建军, 粟敬钦,刘兰琴, 邓青华 2010 物理学报 59 1088]
[13] Zhang R, Wang J J, Su J Q, Liu L Q, Ding L, Tang J, Liu H, JingF, Zhang X M 2010 Acta Phys. Sin. 59 6290 (in Chinese) [张锐, 王建军, 粟敬钦, 刘兰琴, 丁磊, 唐军, 刘华, 景峰, 张小民 2010 物理学报 59 6290]
[14] Zhan J H, Yao X, Gao F H, Yang Z J, Zhang Y X, Guo Y K 2011Acta Phys. Sin. 60 014205 (in Chinese) [占江徽, 姚欣,高福华, 阳泽健, 张怡霄, 郭永康 2011 物理学报 60 014205]
[15] Zhang R, Su J Q, Wang J J, Liu L Q, Li P, Jing F, Zhang X M, XuL X, Ming H 2011 Appl. Opt. 50 687
[16] Rothenberg J E 1997 J. Opt. Soc. Am. B 14 1664
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[1] Lehmberg R H, Obenschain S P 1983 Opt. Comm. 46 27
[2] KatoY, Mima K, Miyanaga N, Arinaga S, Kitagawa Y, NaktsukaM, Yamanka C 1984 Phys. Rev. Lett. 53 1057
[3] Véron D, Ayral H, Gouédard C, Husson D, Lauriou J, Martin O,Meyer B, Rostaing M, Sauteret C 1988 Opt. Comm. 46 42
[4] Skupsky S, Short R W, Kessler T, Craxton R S, Letzring S, SouresJ M 1989 J. Appl. Phys. 66 3456
[5] Lindl J D, Amendt P, Berger R L, Glendenning S G, Glenzer SH, Haan S W, Kaufmann R L, Landen O T, Suter L J 2004 Phys.Plasmas 11 339
[6] Jiang X, Zhou S, Lin Z 2007 J. Appl. Phys. 101 023110
[7] Skupsky S, Craxton R S 1999 Phys. Plasmas 6 2157
[8] Haynam C A, Wegner P J, Auerbach J M, Bowers M W, DixitS N, Erbert G V, Heestand G M, Henesian M A, Hermann M R,Jancaitis K S, Manes K R, Marshall C D, Mehta N C, Menapace J,Moses E,Murray J R, Nostrand MC, Orth C D, Patterson R, SacksR A, Shaw M J, Spaeth M, Sutton S B, Williams W H, WidmayerC C, White R K, Yang S T, van Wonterghem B M 2007 Appl. Opt.46 3276
[9] Morice O 2003 Opt. Eng. 42 1530
[10] Jiang X J, Zhou S L, Lin Z Q, Zhu J 2006 Acta Phys. Sin. 55 5824(in Chinese) [江秀娟, 周申蕾, 林尊琪, 朱俭 2006 物理学报 55 5824]
[11] Li P, Su J Q, Ma C, Zhang R, Jing F 2009 Acta Phys. Sin. 58 6210(in Chinese)[李平, 粟敬钦, 马驰, 张锐, 景峰 2009 物理学报 58 6210]
[12] Zhang R, Wang J J, Su J Q, Liu L Q, Deng Q H 2010 Acta Phys.Sin. 59 1088 (in Chinese) [张锐, 王建军, 粟敬钦,刘兰琴, 邓青华 2010 物理学报 59 1088]
[13] Zhang R, Wang J J, Su J Q, Liu L Q, Ding L, Tang J, Liu H, JingF, Zhang X M 2010 Acta Phys. Sin. 59 6290 (in Chinese) [张锐, 王建军, 粟敬钦, 刘兰琴, 丁磊, 唐军, 刘华, 景峰, 张小民 2010 物理学报 59 6290]
[14] Zhan J H, Yao X, Gao F H, Yang Z J, Zhang Y X, Guo Y K 2011Acta Phys. Sin. 60 014205 (in Chinese) [占江徽, 姚欣,高福华, 阳泽健, 张怡霄, 郭永康 2011 物理学报 60 014205]
[15] Zhang R, Su J Q, Wang J J, Liu L Q, Li P, Jing F, Zhang X M, XuL X, Ming H 2011 Appl. Opt. 50 687
[16] Rothenberg J E 1997 J. Opt. Soc. Am. B 14 1664
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