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High spatial resolution zonal wavefront reconstruction with improved initial value determination scheme for lateral shearing interferometry

机译:高空间分辨率纬向波阵面重建,具有改进的横向剪切干涉法初值确定方案

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摘要

In a recent paper [J. Opt. Soc. Am. A 29, 2038 (2012)], we proposed a generalized high spatial resolution zonal wavefront reconstruction method for lateral shearing interferometry. The test wavefront can be reconstructed with high spatial resolution by using linear interpolation on a subgrid for initial values estimation. In the current paper, we utilize the difference between the Zernike polynomial fitting method and linear interpolation in determining the subgrid initial values. The validity of the proposed method is investigated through comparison with the previous high spatial resolution zonal method. Simulation results show that the proposed method is more accurate and more stable to shear ratios compared with the previous method. A comprehensive comparison of the properties of the proposed method, the previous high spatial resolution zonal method, and the modal method is performed.
机译:在最近的一篇论文中[J.选择。 Soc。上午。 29,2038(2012)],我们提出了一种用于横向剪切干涉测量的广义高空间分辨率纬向波阵面重建方法。通过在子网格上使用线性插值进行初始值估计,可以以高空间分辨率重建测试波前。在本文中,我们利用Zernike多项式拟合方法与线性插值之间的差异来确定子网格初始值。通过与以前的高空间分辨率分区方法进行比较,研究了该方法的有效性。仿真结果表明,与现有方法相比,该方法具有更高的精确度和剪切比稳定性。对所提出的方法,以前的高空间分辨率分区方法和模态方法的性质进行了全面比较。

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