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Detecting higher-order wavefront errors with an astigmatic hybrid wavefront sensor

机译:使用像散混合波阵面传感器检测高阶波阵面误差

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摘要

The reconstruction of wavefront errors from measurements over subapertures can be made more accurate if a fully characterized quadratic surface can be fitted to the local wavefront surface. An astigmatic hybrid wavefront sensor with added neural network postprocessing is shown to have this capability, provided that the focal image of each subaperture is sufficiently sampled. Furthermore, complete local curvature information is obtained with a single image without splitting beam power.
机译:如果可以将特征充分的二次曲面拟合到局部波阵面,则可以更精确地重建子孔径的波阵面误差。带有附加神经网络后处理的散光混合波前传感器显示具有此功能,前提是每个子孔的焦点图像都已充分采样。此外,在不分裂光束功率的情况下,利用单个图像即可获得完整的局部曲率信息。

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