稳态热晕对激光束大气传输特性的影响

Influence of steady-state thermal blooming for laser beam under atmospheric transmission

利用稳态热晕条件下的高斯光束的光强分布模型,数值分析了无风和有风两种情况下稳态热晕效应引起的光束畸变。在无风情况下,分析了热晕对不同传输距离、不同初始功率的激光束能量分布的影响;在有风情况下,分析了热晕对近场和远场激光束的影响,分析了不同横向风速对光束畸变的影响。

By using the light intensity distribution of Gaussian beam under the steady-state thermal blooming condition, numerical analysis is done for light beam distortion by the steady-state thermal blooming under two conditions of without wind and wind. Without wind, the influence of thermal blooming for laser beam energy distribution of different transmission distance and different initial laser power is analysed ; the influence of thermal blooming for near- field laser beam and far-field laser beam is analysed under wind condition, the influence of lateral wind speed for the light beam distortion is analysed.