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采用相位屏法模拟仿真,对四拉盖尔高斯光束(Laguerre Gauss,LG)在大气湍流中传输时的闪烁性能进行了研究。结果表明:与单LG光束相比,四LG光束可以降低光传输中的闪烁指数;和外尺度相比,内尺度对光束闪烁指数的影响较大;光束的拓扑荷或者径向量子数越大,四LG光束的闪烁指数越大;当光束之间的距离取合适的值时,LG光束在大气湍流中的闪烁指数可取得最小值。
The phase-plate simulation was used to study the scintillation performance of Laguerre Gauss (LG) in atmospheric turbulence. The results show that the quadrupole LG beam can reduce the flicker index in light transmission compared with a single LG beam. Compared with the outer scale, the inner scale has a greater influence on the beam flicker index. The larger the topological charge or radial quantum number of the beam, , The larger the flicker index of the four LG beams; the flicker index of the LG beam in the atmospheric turbulence can obtain a minimum value when the distance between the beams is a proper value.