Convergence of general beams into Gaussian intensity profiles after propagation in turbulent atmosphere
Convergence of general beams into Gaussian intensity profiles after propagation in turbulent atmosphere
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DOI：
10.1016/j.optcom.2006.03.071
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发表时间：
2006-09
影响因子：
2.4
通讯作者：
H. Eyyuboğlu;Y. Baykal;E. Sermutlu
中科院分区：
文献类型：
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作者：
H. Eyyuboğlu;Y. Baykal;E. Sermutlu
结果表明，一般形状的激光束在湍流大气中传输后，最终将接近高斯平均光强分布。在我们的公式中，在激光器的出口平面的源场被视为任意函数的源横向坐标与高斯指数调制的产品。通过对任意函数的厄米多项式展开，利用推广的惠更斯-菲涅耳原理导出了接收器平均光强的表达式，并给出了光强分布为高斯分布的条件。通过模拟不同的源场分布，说明了结果。
It is shown that a general shaped laser beam will eventually approach a Gaussian average intensity profile after propagation in turbulent atmosphere. In our formulation, source field at the exit plane of the laser is taken as the product of arbitrary functions of source transverse coordinates with Gaussian exponential modulations. Following the expansion of the arbitrary functions in terms of Hermite polynomials, the average receiver intensity expression is derived using the extended Huygens–Fresnel principle and the conditions for the intensity profile to assume a Gaussian shape are stated. The results are illustrated by simulating various source field distributions.