大气湍流和热晕效应对列阵合成激光传输特性和光束质量影响的理论研究进展

Theoretical research progress on the influence of atmospheric turbulence and thermal blooming on characteristics and beam quality of laser array beams propagating in the atmosphere

介绍了大气湍流效应和热晕效应对列阵合成激光传输特性和光束质量影响的理论研究进展。主要介绍了合成激光在大气中传输的解析和数值模拟研究方法,大气湍流效应对列阵合成光束的光强分布、远场发散角、方向性、曲率半径和湍流距离的影响,以及大气热晕效应对列阵合成光束的光强分布、传输效率、重心偏移、热晕时间尺度和焦移的影响。研究结果表明,大气湍流效应和热晕效应对合成激光光束质量的影响与光束合成方式、合成光束参数以及大气参数密切相关。

We provide a review of the theoretical research progress on the influence of atmospheric turbulence and thermal blooming on the characteristics and beam quality of laser array beams propagating in the atmosphere.The analytical and numerical simulation methods to study the propagation of laser array beams in the atmosphere are introduced.The influence of the atmospheric turbulence on the intensity,angular spread,directionality,curvature radius and turbulence distance of laser array beams is reviewed,and the influence of the atmospheric thermal blooming on the intensity,propagation efficiency,beam centroid,time scale of thermal blooming and focal shift of laser array beams is also reviewed.It is shown that the influence of atmospheric turbulence and thermal blooming on the beam quality of laser array beams is closely related with the beam combination methods,beam parameters and atmospheric parameters.