利用环形子孔径哈特曼-夏克斜率数据复原全孔径波前相位算法研究  

Algorithm for Reconstructing the Whole-Aperture Wavefront from Annular Subaperture Hartmann-Shack Gradient Data

作　　者：徐洪艳[1,2,3] 鲜浩[1,2] 张雨东[1,2] 

机构地区：[1]中国科学院光电技术研究所自适应光学实验室,四川成都610209 [2]中国科学院自适应光学重点实验室,四川成都610209 [3]中国科学院研究生院,北京100049

出　　处：《光学学报》2011年第1期123-128,共6页Acta Optica Sinica

摘　　要：提出了一种适用于哈特曼-夏克波前传感器的环形子孔径拼接检测技术的拼接复原算法。该算法通过建立各个环形子孔径内有效的哈特曼-夏克斜率数据和全孔径波前相位的关系,避免了环形子孔径区域的波前复原过程,从而有效地解决了环形子孔径区域的哈特曼-夏克波前传感器有效采样率低的问题。算法对斜率测量噪声较不敏感,具有较好的抗噪声干扰的能力。算法对除球差的各阶像差均具有较高的精度;算法对球差拼接复原后存在离焦残差,分析表明残差的大小只与球差大小有关而与环形子孔径排布方式无关,并通过去除球差的耦合误差得到较高的拼接复原精度。A new algorithm is proposed for annular subaperture stitching technology based on Hartmann-Shack wavefront sensor.The algorithm can reconstruct the whole-aperture wavefront without reconstructing annular subaperture wavefront.The algorithm is feasible for the limited Hartmann sampling frequency in annular subaperture.By evaluating the sensitivity of the algorithm to the measurement noise of wavefront gradient data,the algorithm is not sensitive to the measurement noise of the wavefront gradient.The algorithm can stitch different abberations except spherical abberations with high precision.There is some defocus aberration in the residual aberration for reconstructing the spherical aberration,the root mean square value（RMS） of residual aberration depends on the RMS of the spherical aberration and it is decreased by removing the coupling error of the spherical aberration.

关 键 词：信号处理 非球面测量 哈特曼-夏克波前传感器 环形子孔径 全孔径波前复原 环形泽尼克多项式 

分 类 号：O436[机械工程—光学工程]