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Proceedings Paper

Two-dimensional wavefront reconstruction based on double-shearing and least squares fitting
Author(s): Peiying Liang; Jianping Ding; Yangqing Zhu; Qian Dong; Yuhua Huang; Zhen Zhu
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Paper Abstract

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 doubleshearing and least squares fitting.

Paper Details

Date Published: 13 June 2017
PDF: 12 pages
Proc. SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 104492H (13 June 2017); doi: 10.1117/12.2270863
Show Author Affiliations
Peiying Liang, Foshan Univ. (China)
Jianping Ding, Nanjing Univ. (China)
Yangqing Zhu, Foshan Univ. (China)
Qian Dong, Foshan Univ. (China)
Yuhua Huang, Foshan Univ. (China)
Zhen Zhu, Foshan Univ. (China)


Published in SPIE Proceedings Vol. 10449:
Fifth International Conference on Optical and Photonics Engineering
Anand Krishna Asundi, Editor(s)

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