We study the spectral density of vortex beams propagating in atmospheric turbulence by numerical simulation and experiment with a spatial light modulator (SLM). It is found that the figures produced by experiment with SLM are quite different from those by traditional numerical simulation. In view of this, we put forward a new simulation method that refers to the theory of beam wander, leading to a consistency between numerical simulation and experimental results eventually. The improved simulation method could improve the accuracy of beam simulation greatly in optical study.

中文翻译：

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用新的模拟方法在大气湍流中传播的涡旋光束的光谱密度

我们通过数值模拟研究了在大气湍流中传播的涡旋光束的光谱密度，并使用空间光调制器（SLM）进行了实验。结果发现，通过SLM实验得到的数字与传统数值模拟的数字大不相同。有鉴于此，我们提出了一种新的模拟方法，该方法参考了光束漂移理论，最终使数值模拟与实验结果保持一致。改进的仿真方法可以大大提高光学研究中光束仿真的准确性。