部分相干厄米-双曲正弦-高斯光束通过湍流大气传输的平均光强分布演化和角扩展

推导出部分相干厄米-双曲正弦-高斯(H-ShG)光束通过湍流大气的平均光强和角扩展的解析表示式，并用以研究了部分相干H-ShG光束在湍流中的平均光强分布演化和角扩展. 结果表明，折射率结构常数C²_n的增加和空间相关长度σ₀的减小都会加速演化过程. 引入相对角扩展来定量描述光束抗拒湍流的能力. 空间相关长度σ₀，束腰宽度w₀和双曲关键词：平均光强分布演化角扩展湍流大气部分相干厄米-双曲正弦-高斯(H-ShG)光束

Evolution of average intensity distribution and angular spread of partially coherent Hermite-sinh-Gaussian beams propagating through turbulent atmosphere

The analytical expressions for the average intensity and angular spread of partially coherent Hermite-sinh-Gaussian (H-ShG) beams propagating through turbulent atmosphere are derived and used to study the evolution of average intensity distribution and angular spread of partially coherent H-ShG beams in turbulence. It is shown that an increase of the refraction index structure constant C²_n and a decrease of the spatial correlation length σ₀ accelerate the evolution process. The relative angular spread is introduced to quantitatively describe the resistance of a beam to turbulence. The smaller the spatial correlation length σ₀, the waist width w₀, the Sh-part parameter Ω₀, and the larger the beam orders m, n, the less the angular spread of partially coherent H-ShG beams is affected by turbulence.