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Volume 28 Issue 3
Sep.  2013
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Citation:
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Far-field characteristics of high-power laser beams

  • 1.

    Institute of Physics and Chemistry, Sichuan University, Chengdu 610064, China;

  • 2.

    College of Electronic Engineering, Sichuan Normal University, Chengdu 610066, China;

  • 3.

    College of Physics & Communication Electronics, Jiangxi Normal University, Nanchang 330027, China

  • Received Date: 2003-06-17
    Accepted Date: 2003-08-11
  • By using a beam model with linear non-uniform field profile in the x direction,the effect of beam non-uniformity and nonlinear thermal blooming in the optical beam control system on the far-field characteristics of high-power laser beams is studied.It is found that the non-uniformity of the initial beam affects the focusability and results in the astigmatism.The thermal blooming gives rise to a further decrease of the focusability and a further increase of the astigmatism.In addition,the peak intensity in the far-field is reduced and its position shifts away owing to the thermal blooming.
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  • [1] 金钢,刘顺发,李树民 et al.激光热效应对光束控制系统发射光束质量的影响[J].中国激光,2002,A29(10):895～899.
    [2]

    FLECK J A,MORRIS J R,FEIT M D.Time-dependent propagation of high energy laser beams through the atmosphere[J].Appl Phys,1976,10:129～160.
    [3] 陈栋泉,李有宽,徐锡申 et al.激光大气传输中热晕的数值模拟[J].强激光与粒子束,1993,5(2):243～252.
    [4]

    LÜ B D,LUO Sh R,ZHANG B.Propagation of three-dimensional flattened Gaussian beams[J].J Mod Opt,1999,46:1753～1762.
    [5]

    COLLINS S A.Lens-system diffraction integral written terms of matrix optics[J].J O S A,1970,60(7):1168～1177.
    [6]

    GARAY A.Continuous wave deuterium fluoride laser beam diagnostic system[J].SPIE,1998,888:17～22.
    [7] 吕百达.强激光的传输与控制[M].北京:国防工业出版社,1999.66.
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Far-field characteristics of high-power laser beams

  • 1. Institute of Physics and Chemistry, Sichuan University, Chengdu 610064, China;
  • 2. College of Electronic Engineering, Sichuan Normal University, Chengdu 610066, China;
  • 3. College of Physics & Communication Electronics, Jiangxi Normal University, Nanchang 330027, China
  • Received Date: 2003-06-17
  • Accepted Date: 2003-08-11
  • Available Online: 2004-05-25

Abstract: By using a beam model with linear non-uniform field profile in the x direction,the effect of beam non-uniformity and nonlinear thermal blooming in the optical beam control system on the far-field characteristics of high-power laser beams is studied.It is found that the non-uniformity of the initial beam affects the focusability and results in the astigmatism.The thermal blooming gives rise to a further decrease of the focusability and a further increase of the astigmatism.In addition,the peak intensity in the far-field is reduced and its position shifts away owing to the thermal blooming.

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