利用扩展惠更斯菲涅耳原理对高能激光在大气中的传输进行了分析，获得了高能激光准直传输轴上及峰值斯特雷尔比的积分表达式，并使用激光大气传输四维仿真程序对该表达式的适用范围进行了分析及数值模拟验证。结果表明，积分表达式可以很好地适用于无自适应光学系统补偿时的高能激光湍流热晕传输问题，可以用于自适应光学系统补偿时弱热晕条件下的湍流热晕角非等晕问题和弱热晕及中等热晕条件下的湍流热晕聚焦非等晕问题。

The propagation performance of high energy laser beams in atmosphere is studied by using extended Huygens-Fresnel diffraction integral, and expressions of axis and peak Strehl ratio are proposed. To examine the scope of these expressions, the results of wave-optics code are compared. It is found that the performance of high energy laser beams in atmosphere can be evaluated by using these expressions when the adaptive optics system is opened, but there is much difference between expressions and the results of wave-optics code under the condition of strong thermal blooming when adaptive optics system is closed.