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Model-based multi-fringe interferometry using Zernike polynomials
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DOI：10.1016/j.optlaseng.2018.01.020.png)
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Abstract
En 中文
In this paper, a general phase retrieval method is proposed, which is based on one single interferogram with a small amount of fringes (either tilt or power). Zemike polynomials are used to characterize the phase to be measured; the phase distribution is reconstructed by a non-linear least squares method. Experiments show that the proposed method can obtain satisfactory results compared to the standard phase-shifting interferometry technique. Additionally, the retrace errors of proposed method can be neglected because of the few fringes; it does not need any auxiliary phase shifting facilities (low cost) and it is easy to implement without the process of phase unwrapping. (C) 2018 Elsevier Ltd. All rights reserved.
Keywords:
Fringe analysis
Interferometry
Phase measurement
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