为了研究高能脉冲激光大气传输特性, 采用桶中功率和光斑半径作为远场光束质量评价标准, 与800J钕玻璃激光器的实验结果进行了比较, 仿真计算和实验中分别考虑了不同能见度、出射光能量和湍流强度下远场光斑半径的变化趋势; 对数值模拟与实验结果分别进行了分析和比对, 并对两者之间的误差做了详细分析。结果表明, 数值模拟可用于预测实验结果, 且对高能脉冲激光在大气中的应用和高能激光器的研制有指导意义。

To study the characteristics of high energy pulse laser propagating through turbulent atmosphere, the propagation of high energy laser in atmosphere was numerically simulated, and the far-field beam quantity in terms of the power in the bucket was compared with the experiment performed by using an Nd∶glass laser at output of 800J. The error between the numerical simulation and experiment was analyzed in detail. The numerical simulation and experiments were studied under different conditions of visibility, output energy, and turbulence. It is shown that the numerical simulation can be used to predict the experimental results by a suitable choice of structure parameters of the phase screen. The results show the significance to guide the application and development of high energy pulse lasers.