论文部分内容阅读
进行了聚焦光束稳态热晕效应及自适应光学补偿的室内模拟实验观测,获得了在不同热畸变参数情况下,自适应光学系统开闭环时光束远场Strehl比和信标光波前方差的测量结果。测量结果表明自适应光学对聚焦光束整束热晕的补偿效果是显著的。在热畸变参数Nd大于170时,校正剩余波前大差呈非线性增长。在热畸变参数N_d与光束菲涅耳数N_f的比值大于1时,校正后的远场光斑峰值强度随入射功率的增加开始呈下降趋势。
The steady-state thermal halo of the focused beam and the indoor simulation experiment of the adaptive optical compensation were performed. The measurement results of the far-field Strehl ratio of the beam and the variance of the light wave front of the beacon under different thermal distortion parameters were obtained. . The measurement results show that the compensation effect of the adaptive optics on the focusing beam thermal halo is significant. When the thermal distortion parameter Nd is more than 170, the large difference of the corrected residual wave front shows a nonlinear increase. When the ratio of the thermal distortion parameter N_d to the Fresnel N_f of the light beam is greater than 1, the peak intensity of the corrected far-field light spot begins to decrease with the increase of the incident power.