Propagation of cosh-Gaussian beams diffracted by a circular aperture in turbulent atmosphere
Propagation of cosh-Gaussian beams diffracted by a circular aperture in turbulent atmosphere
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DOI：
10.1007/s00340-007-2615-9
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发表时间：
2007-04
期刊：
影响因子：
--
通讯作者：
X. Chu;Y. Ni;G. Zhou
中科院分区：
文献类型：
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作者：
X. Chu;Y. Ni;G. Zhou
推导了湍流大气中双曲余弦-高斯(CHG)光束经光圈衍射后的平均光强的解析公式，并讨论了一些极限情况。利用平均光强公式进行了数值模拟比较，并研究了一些特殊情况，特别是CHG光束参数(Ω_0)、传输距离、光圈及其尺寸对平均归一化光强分布的影响。结果表明，有孔湍流大气中的平均归一化强度分布不仅不同于有孔自由空间的归一化强度分布，而且也不同于无孔湍流大气中的归一化强度分布的演化特性。
An analytical formula for the average intensity of cosh-Gaussian (ChG) beams diffracted by an aperture in turbulent atmosphere is derived and some limiting cases are discussed. By using the average intensity formula, some numerical simulation comparisons are made and some special cases are studied, especially the influences of the ChG beam parameter (Ω0), the propagation distance, the aperture and its size on the average normalized intensity distribution. It is determined that the evolution properties of the average normalized intensity profile in turbulent atmosphere with aperture are different not only from those of free space with aperture but also from those in turbulent atmosphere without aperture.