畸变波前相位校正效果分析
Effect of wave-front phase distortion correction
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摘要: 以随机相位屏构造波前畸变相位，运用高通滤波的方法模拟变形镜对光束波前畸变相位的校正作用，模拟分析了畸变波前的相位校正效果，定量分析了校正效果与低频相位畸变和高频相位畸变之间的关系，并进一步讨论了变形镜的校正位置对校正效果的影响。研究结果表明:对于给定单元尺寸的变形镜，随着畸变波前中高频相位畸变所占比例的增大，经校正后的远场光束质量明显降低，校正效果也越来越差。此外，光学变形镜所在位置对校正效果存在明显影响，校正效果随校正位置的变化呈现出起伏变化。Abstract: By constructing a wave-front distortion phase with random phase screen, the distortion correction effect of deformable mirror has been simulated and analyzed with the method of high-pass filtering. The variations of the correction effect with low frequency and high frequency phase distortions have been quantitatively analyzed. The influence of the correction location of deformable mirror has been also discussed. It is found that for a deformable mirror of given size, the quality of the corrected beam degrades obviously in far field with the percent of high frequency phase distortion increasing. In addition, the correction effect varies obviously with the mirror location.
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Key words:
- phase distortion /
- phase correction /
- deformable mirror /
- high-pass filtering
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