ABSTRACT We report on experiments where non-uniformly correlated (NUC), Gaussian Schell (GSM) and Multi-Gaussian Schell (MGSM) model spatially partially coherent laser beams were propagated underwater. Two scenarios were explored: still water and mechanically agitated water. The main objective of our study was the experimental comparison of the scintillation performance among beams with different correlation functions. The results show generally increased absolute values of scintillation index for NUC beams as compared with GSM and MGSM beams. We hypothesized that this effect is related to the method of NUC beams generation. It should be noted, that the presented results document only the given experimental scenarios and show the relative comparison between GSM, MGSM and NUC beams with Gaussian used as a turbulence level benchmark. Further investigation is necessary to broaden the scope of our explorations of the propagation of uniformly correlated spatially partially coherent as well as non-uniformly correlated beam classes.

中文翻译：

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非均匀和均匀相关的空间部分相干激光束在水下传播的闪烁实验

摘要 我们报告了非均匀相关 (NUC)、高斯谢尔 (GSM) 和多高斯谢尔 (MGSM) 模型空间部分相干激光束在水下传播的实验。研究了两种情况：静止的水和机械搅拌的水。我们研究的主要目的是对具有不同相关函数的光束之间的闪烁性能进行实验比较。结果表明，与 GSM 和 MGSM 光束相比，NUC 光束的闪烁指数绝对值普遍增加。我们假设这种效果与 NUC 光束生成方法有关。应该注意的是，所呈现的结果仅记录了给定的实验场景，并显示了使用高斯作为湍流水平基准的 GSM、MGSM 和 NUC 光束之间的相对比较。