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束变换环孔激光谐振腔的环束场传输差分计算 被引量：3

Calculation of annular beam propagation in beam-converting annular resonator with a fast finite difference method
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摘要 　通过使用新的坐标变量和光场的表达形式,推导了新坐标系下环束场传输的偏微分方程,给出了相应差分方程的截断误差和稳定性条件,使得环束场传输计算速度大幅提高;使用二阶精度的Crank Nicolso差分方法对束变换环孔激光谐振腔的环束场传输进行了计算,并与W.D.Murphy和M.L.Bernabe所给M B积分近似方法的计算结果进行了比较,证实了该方法无论计算速度和精度都优于M B积分近似方法。 Beam-converting annular resonator (BCAR) possesses outstanding characteristics of high extraction efficiency and near-diffractive beam quality. But the numerical simulation of BCAR is a hard work, for the thin annular beam propagating calculation will cost much computer work with conventional methods. In this paper a clever finite difference method based on coordinates transform is presented. This method can largely reduce the time for calculating annular beam propagation, it also has higher precision than W.D. Murphy's approximation method does.
作者 刘文广 陆启生 刘泽金
机构地区 国防科学技术大学理学院
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2004年第7期835-839,共5页 High Power Laser and Particle Beams
基金 国家863计划项目资助课题
关键词 高能激光 束变换环孔腔 环形增益介质 有限差分方法 Computer simulation Finite difference method Laser beams Laser resonators Numerical analysis
分类号 TN248 [电子电信—物理电子学]
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参考文献9

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同被引文献26

  • 1施建华,姜宗福,袁圣付,华卫红.用LIIF法测量DF/HF化学激光器喷管混合性能的数值分析[J].国防科技大学学报,2004,26(4):81-85. 被引量：3
  • 2刘文广,陆启生,刘泽金.束旋转90°对束变换环孔腔输出性能的影响[J].强激光与粒子束,2004,16(10):1245-1249. 被引量：1
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  • 7费德洛夫.连续波氟化氢和氟化氘化学激光器[M].长沙:国防科技大学出版社,2010:1-9.
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强激光与粒子束
2004年 第7期

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