“神光-Ⅲ”主机装置的自适应光学波前校正系统
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摘要
本文介绍了为"神光-Ⅲ"主机装置研制的五十套工程化自适应光学系统,包括系统技术方案,基于可拆卸技术的大口径变形镜和具有自动对准功能的哈特曼波前传感器两主要部件的性能,测量并分析了波前特性,系统校正结果表明:自适应光学系统改善了主机装置的光束质量,满足10倍衍射极限范围内激光能量大于95%的指标要求,确保"神光-Ⅲ"主机装置激光在主放大系统内的传输顺畅。
The fifty engineered-manufacture adaptive optics systems developed for the Shen Guang Ⅲ(SGⅢ) facility, are introduced in this paper. The system technical scheme, together with the key components – the dismountable large aperture deformed mirror and the auto-alignment Shack-Hartmann wavefront sensor, are presented. The characteristic of the wavefront is measured and analyzed. The result of system correction shows that the adaptive optics systems improved the beam quantity of the SGⅢ facility, meet the requirement that the laser beam energy is higher than 95% in the 10-time diffraction limit zone, and ensured the laser transmission in the main amplification system of the SGⅢ facility.
The fifty engineered-manufacture adaptive optics systems developed for the Shen Guang Ⅲ(SGⅢ) facility, are introduced in this paper. The system technical scheme, together with the key components – the dismountable large aperture deformed mirror and the auto-alignment Shack-Hartmann wavefront sensor, are presented. The characteristic of the wavefront is measured and analyzed. The result of system correction shows that the adaptive optics systems improved the beam quantity of the SGⅢ facility, meet the requirement that the laser beam energy is higher than 95% in the 10-time diffraction limit zone, and ensured the laser transmission in the main amplification system of the SGⅢ facility.
引文
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[12]Jiang W H,Yang Z P,Guan C L,et al.New progress on adaptive optics in inertial confinement fusion facility[J].Chinese Journal of Lasers,2009,36(7):1625–1634.姜文汉,杨泽平,官春林,等.自适应光学技术在惯性约束聚变领域应用的新进展[J].中国激光,2009,36(7):1625–1634.
[2]Zacharias R A,Bliss E S,Feldman M,et al.National Ignition Facility(NIF)wavefront control system[J].Proceedings of SPIE,1999,3492:678–692.
[3]Hartley R,Kartz M W,Behrendt W C,et al.Wavefront correction for static and dynamic aberrations to within 1 second of the system shot in the NIF Beamlet demonstration facility[J].Proceedings of SPIE,1997,3047:294–300.
[4]Zuegel J D,Borneis S,Barty C,et al.Laser challenges for fast ignition[J].Fusion Science and Technology,2006,49(3):453–482.
[5]Jiang A W,Huang S F,Ling N,et al.Hill-climbing wavefront correction system for large laser engineering[J].Proceedings of SPIE,1989,965:266–272.
[6]Jiang W H,Zhang Y D,Xian H,et al.A wavefront correction system for inertial confinement fusion[C]//Proceedings of the2nd International Workshop on Adaptive Optics for Industry and Medicine,1999:8–15.
[7]Zhang Y D,Yang Z P,Duan H F,et al.Characteristics of wavefront aberration in the single beam principle prototype of the next-generation ICF system[J].Proceedings of SPIE,2002,4825:249–256.
[8]Zhang Y,Yang Z,Guan C,et al.Dynamic aberrations correction in an ICF laser system[C]//Proceedings of the 4th International Workshop on Adaptive Optics for Industry and Medicine,2005,102:261–271.
[9]Yang Z P,Li E D,Wang H Y,et al.Adaptive optical system for a large-aperture Nd:glass laser for ICF[J].Proceedings of SPIE,2004,5639:21–27.
[10]Yang H Z,Li X Y,Jiang W H.Comparison of several stochastic parallel optimization control algorithms for adaptive optics system[J].High Power Laser and Particle Beams,2008,20(1):11–16.杨慧珍,李新阳,姜文汉.自适应光学系统几种随机并行优化控制算法比较[J].强激光与粒子束,2008,20(1):11–16.
[11]Vorontsov M A,Carhart G W,Cohen M,et al.Adaptive optics based on analog parallel stochastic optimization:analysis and experimental demonstration[J].Journal of the Optical Society of America A,2000,17(8):1440–1453.
[12]Jiang W H,Yang Z P,Guan C L,et al.New progress on adaptive optics in inertial confinement fusion facility[J].Chinese Journal of Lasers,2009,36(7):1625–1634.姜文汉,杨泽平,官春林,等.自适应光学技术在惯性约束聚变领域应用的新进展[J].中国激光,2009,36(7):1625–1634.