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Volume 28 Issue 6
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 2004 >  28(6): 655-657

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Effect of stimulated rotational Raman scattering on the beam quality of high-power ultraviolet laser beams

  • 1.

    College of Electronic Information, Sichuan University, Chengdu 610064, China;

  • 2.

    Research Center of Laser Fusion, CAEP, Mianyang 621900, China

  • Received Date: 2003-11-27
    Accepted Date: 2004-01-14
  • In the inertial confinement fusion (ICF),to achieve optimum fuel compression,the laser beams must irradiate the target uniformly,requiring excellent beam quality.In this paper,using the modeling of transient stimulated rotational Raman scattering (SRRS),the SRRS of high-power ultraviolet laser beams in long air path has been studied.The threshold condition for the SRRS,the effect of diffraction and hot spots on laser beam quality has been anal yzed.As a result,the effect of diffraction on threshold is very small,but it makes the beam quality decrease.The hot spots not only decrease the threshold con dition but also drop the beam quality.
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    YING L,TERRANCE K.Raman scattering in air:a four-dimensional system analysis[J].SPIE,1992,1625:158～166.
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    YING L,TERRANCE K,ARMSTRONG J J.Laser system power balance effects from stimulated rotational Raman scattering in air[J].SPIE,1992,1870:14～25.
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    RAYMER M G,MOSTOWSKI J.Simulated Raman scattering:unified treatment of spontaneous initiation and spatial propagation[J].Phys Rev,1981,A24(4):1980～1998.
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    WANG C S.Theory of stimulated Raman scattering[J].PhysRev,1969,182(2):482～494.
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    CARMEN R,SHIMIZU F,WANG C et al.Theory of Stokes pulse shapes in transient stimulated Raman scattering[J].Phys Rev,1970,A2(1):60～72.
    [6] 林德文.大气中受激喇曼散射的理论和数值计算[J].强激光与粒子束,1994,6(2):193～200.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Effect of stimulated rotational Raman scattering on the beam quality of high-power ultraviolet laser beams

  • 1. College of Electronic Information, Sichuan University, Chengdu 610064, China;
  • 2. Research Center of Laser Fusion, CAEP, Mianyang 621900, China
  • Received Date: 2003-11-27
  • Accepted Date: 2004-01-14
  • Available Online: 2004-11-25

Abstract: In the inertial confinement fusion (ICF),to achieve optimum fuel compression,the laser beams must irradiate the target uniformly,requiring excellent beam quality.In this paper,using the modeling of transient stimulated rotational Raman scattering (SRRS),the SRRS of high-power ultraviolet laser beams in long air path has been studied.The threshold condition for the SRRS,the effect of diffraction and hot spots on laser beam quality has been anal yzed.As a result,the effect of diffraction on threshold is very small,but it makes the beam quality decrease.The hot spots not only decrease the threshold con dition but also drop the beam quality.

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