近海面准直高斯光束光斑扩展模型的实验研究

利用大气光束动态测试仪对近海面的光斑扩展进行实验测量，将海洋环境大气折射率起伏功率谱与传统Kolmogorov大气折射率起伏功率谱下的光斑扩展模型进行对比分析。结果表明，实测光斑扩展起伏幅度比海洋谱和Kolmogorov谱的光斑扩展起伏幅度大，而海洋谱下的光斑扩展理论计算值在使用了实测的内尺度数据后起伏幅度很小；随着大气折射率结构常数的增加，大气海洋谱光斑扩展模型较Kolmogorov谱光斑扩展模型更接近实测值；当链路距离为1 km时，海洋谱光斑扩展的理论计算值与实测值的差值为0.1~1.5 cm，当链路距离为2 km时，差值为0.1~1.8 km，相对误差均在0.1%~11.4%之间。

Abstract

Beam spreading near the sea surface environment is measured in the experiment by dynamically-tested atmospheric beam system. Comparative analyses are then conducted between the experimental data and the theoretical value of both the marine power spectrum and the traditional Kolmogorov power spectrum. Results show that the measured ampltude fluctuation of beam spreading is lager than those of the marine power spectrum and Kolmogorov power spectrum, and the theoritical value of beam spreading for marine power spectrum is small when the measured inner scale is used to calculate. The beam spreading model for the marine power spectrum is closer to the experimental data than that for the Kolmogorov power spectrum with the increase of the refractive index structure constant of atmosphere. The difference between the theoretical value of the marine power spectrum and the experimental data is about 0.1~1.5 cm at 1 km link distance and 0.1~1.8 km at 2 km link distance. Both the relative errors are within 0.1% ~11.4%.

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王红星, 宋博, 刘敏, 吴晓军. 近海面准直高斯光束光斑扩展模型的实验研究[J]. 激光与光电子学进展, 2016, 53(7): 070105. Wang Hongxing, Song Bo, Liu Min, Wu Xiaojun. Experimental Study of Beam Spreading Model of Collimated Gaussian Beam near the Sea Surface Environment[J]. Laser & Optoelectronics Progress, 2016, 53(7): 070105.

近海面准直高斯光束光斑扩展模型的实验研究

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