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Two-dimensional Wavefront Reconstruction Based on Double- shearing and Least Squares Fitting

机译：基于双剪切和最小二乘拟合的二维波前重建

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摘要

The two-dimensional wavefront reconstruction method based on double-shearing and least squares fitting is proposed in this paper. Four one-dimensional phase estimates of the measured wavefront, which correspond to the two shears and the two orthogonal directions, could be calculated from the differential phase, which solves the problem of the missing spectrum, and then by using the least squares method the two-dimensional wavefront reconstruction could be done. The numerical simulations of the proposed algorithm are carried out to verify the feasibility of this method. The influence of noise generated from different shear amount and different intensity on the accuracy of the reconstruction is studied and compared with the results from the algorithm based on single-shearing and least squares fitting. Finally, a two-grating lateral shearing interference experiment is carried out to verify the wavefront reconstruction algorithm based on double-shearing and least squares fitting.
机译：提出了基于双剪切和最小二乘拟合的二维波前重建方法。可以从微分相位计算出对应于两个切变和两个正交方向的四个被测波阵面的一维相位估计，这解决了频谱丢失的问题，然后使用最小二乘法，将两个三维波前重建可以完成。对该算法进行了数值模拟，验证了该方法的可行性。研究了不同剪切量和不同强度产生的噪声对重构精度的影响，并与基于单剪切和最小二乘拟合的算法的结果进行了比较。最后，通过两次光栅横向剪切干涉实验验证了基于双剪切和最小二乘拟合的波前重建算法。

著录项

  • 来源
    《》|2017年|104492H.1-104492H.12|共12页
  • 会议地点 Singapore(SG)
  • 作者

    Peiying Liang; Jianping Ding; Yangqing Zhu; Qian Dong; Yuhua Huang; Zhen Zhu;

  • 作者单位

    School of Electronic Information Engineering, Foshan University, Foshan, China,528000;

    Nanjing National Laboratory of Microstructures and School of Physics, Nanjing University,Nanjing, China, 210000;

    School of Electronic Information Engineering, Foshan University, Foshan, China,528000;

    School of Electronic Information Engineering, Foshan University, Foshan, China,528000;

    School of Mechatronical Engineering, Foshan University, Foshan, China, 528000;

    School of Electronic Information Engineering, Foshan University, Foshan, China,528000;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Interferometry; phase measurement; lateral shearing; least squares fitting; Fourier Transform; wavefront reconstruction;

    机译：干涉仪相位测量横向剪切最小二乘拟合；傅里叶变换;波前重建;
  • 入库时间 2022-08-26 14:02:07

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