Numerical analysis of Gaussian beam propagating in atmosphere
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摘要: 为了分析光束传输与大气参量如大气能见度、折射率结构常数和激光自身参量如激光的波长、光束腰斑半径的关系,以高斯光束为例,推导了其远距离传输规律,采用数值模拟的方法分析了各因素对传输轴上和截面上光强分布的影响。结果表明,一旦激光发射系统的特征参量和大气传输效应的特征参量确定,就可判断激光大气传输的效果。这一结果为激光工程应用的可行性及系统参量的优化设计提供了依据。Abstract: In order to analyze the relationship between the laser propagation and atmospheric parameters like visibility and refractive index structure constant and laser beam parameters like the wave length and waist width, the propagating law and the influence on the laser intensity was studied based on the Gaussian beam. The results indicates that if the parameters of the laser source and atmosphere are confirmed, the effect of laser propagation is easy to know, which could provide a rule for the feasibility of laser engineering application, as well as conduct laser system design optimization.
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