Tang Hua, Ou Baolin, Luo Bin, Guo Hong, Dang Anhong
School of Electronic and Information Engineering, Beihang University, Beijing 100191, China.
J Opt Soc Am A Opt Image Sci Vis. 2011 Jun 1;28(6):1016-21. doi: 10.1364/JOSAA.28.001016.
The analytical expression for the rms beam width of the radial gaussian beam array propagating in non-Kolmogorov turbulence is derived, where the coherent combination is considered. The influences of the beam number, the generalized exponent, and the ring radius on the rms beam width are investigated. The results indicate that the rms beam width depends greatly on the generalized exponent and the beam number. Further, an optimum ring radius, which leads to a minimum beam width, is proved to exist within a certain traveling distance and the optimum ring radius increases when the beam number increases.
推导了在非柯尔莫哥洛夫湍流中传播的径向高斯光束阵列均方根束宽的解析表达式，其中考虑了相干合成。研究了光束数量、广义指数和环半径对均方根束宽的影响。结果表明，均方根束宽在很大程度上取决于广义指数和光束数量。此外，证明了在一定传播距离内存在一个导致最小束宽的最佳环半径，并且当光束数量增加时，最佳环半径会增大。
