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基于广义惠更斯-菲涅耳原理、修正von Karman湍谱、贝塞耳权重函数的高斯函数近似和误差小于4%的波结构函数平方近似,研究得出了包含湍流尺度影响的湍流大气中传输高斯光束的平均光强新关系和包含湍流外尺度影响的光束短期扩展因子。研究了高斯光束等效半径与传输距离、初始光束束径和光波波长间的关系,结果表明,在给定折射率结构参量和传输距离情况下,存在极小短期光束扩展对应的特征初始束径和特征光波波长。
Based on the generalized Huygens-Fresnel principle, the von Karman turbulence spectrum, the Gaussian function approximation of Bessel’s weight function, and the squared approximation of the wave structure function with error less than 4% are studied. The results show that turbulence in turbulent atmosphere The New Relationship Between Average Light Intensity of Transmission Gaussian Beam and Short-Term Spreading Factor of Beam Containing Influence of Turbulence Outer Scale. The relationship between the equivalent radius of the Gaussian beam and the transmission distance, the initial beam diameter and the wavelength of the light is studied. The results show that the characteristic initial beam diameter corresponds to the minimum short-term beam spread given the refractive index structure parameters and transmission distance And characteristic light wavelength.