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首页> 外文期刊>Optics and Lasers in Engineering >Theoretical analysis of hot-image effect in a high-power laser system with cascaded nonlinear medium
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Theoretical analysis of hot-image effect in a high-power laser system with cascaded nonlinear medium

机译：具有级联非线性介质的高功率激光系统中热像效应的理论分析

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摘要

We present a universally applicable and quick method to forecast the intensity and location of the hot-image effects in a high-power laser system structured by cascaded Kerr medium plates. The analytical expressions for the locations and the peak intensity of the hot-images are deduced by using propagation matrix method. The results are useful for laser designers to estimate and minimize the threat of optical damage. Theoretical analysis demonstrates that a maximum of N hot-images may appear in a laser system structured by N cascaded Kerr medium plates and the distance between two adjacent hot-images is two times the interval between two adjacent Kerr medium plates. The number and locations of the hot-images are related with the number of the Kerr medium plates, the distance from the scatterer to the front of the first Kerr medium plate, and the interval between two adjacent Kerr medium plates. The peak intensity of the hot-images depends on the number of the Kerr medium plates, the B-integral of each Kerr medium plate, the amplitude and phase modulation coefficients of the scatterer and the peak intensity of the input beam. The hot-image effects in a laser system with cascaded Kerr medium plates from two to eight are discussed in detail and numerically analyzed. Numerical simulation results are in agreement with the theoretical results.
机译：我们提出了一种普遍适用的快速方法，以预测由级联的Kerr介质板构成的高功率激光系统中热图像效果的强度和位置。利用传播矩阵法推导了热像的位置和峰值强度的解析表达式。该结果对于激光设计人员评估和最小化光学损坏的威胁很有用。理论分析表明，在由N个级联的Kerr介质板构成的激光系统中，最多可以出现N个热像，两个相邻的热像之间的距离是两个相邻的Kerr介质板之间的间隔的两倍。热图像的数量和位置与Kerr介质板的数量，从散射体到第一个Kerr介质板前部的距离以及两个相邻的Kerr介质板之间的间隔有关。热图像的峰值强度取决于Kerr介质板的数量，每个Kerr介质板的B积分，散射体的振幅和相位调制系数以及输入光束的峰值强度。详细讨论并数值分析了具有2到8个级联Kerr介质板的激光系统中的热像效应。数值模拟结果与理论结果吻合。

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  • 来源
    《Optics and Lasers in Engineering》 |2011年第7期|p.972-978|共7页
  • 作者

    Tao Peng; Jianlin Zhao; Dong Li;

  • 作者单位

    ShaaNXI Key Laboratory of Optical Information Technology, the Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072, China;

    ShaaNXI Key Laboratory of Optical Information Technology, the Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072, China;

    ShaaNXI Key Laboratory of Optical Information Technology, the Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hot-image; cascaded kerr medium plates; high-power laser; defects; optical damage;

    机译：热图像级联的kerr中板;大功率激光缺陷光学损伤;

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