Based on the extended Huygens-Fresnel principle, the formula for the change in the degree of coherence of partially coherent vortex beam in turbulent atmosphere has been derived.

• 摘要根据广义的惠更斯-菲涅耳原理，得到了部分相干涡旋光束在湍流大气中传输时光谱相干性的理论表达式，然后详细研究了光束在湍流介质中传输时相干性的变化规律。