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Iterative ripple error suppression algorithm for the dynamic interferometry
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DOI：10.1364/OE.439721.png)
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摘要
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In dynamic interferometry, the retardation error of quarter-wave plate (QWP) causes inconsistency of the background intensity and the modulation of the four phase shift interferograms, which makes the periodic ripple error in the measurement results. In this paper, an iterative algorithm is proposed to solve this problem. Both simulations and experiments validated that the algorithm can effectively eliminate the ripple error in the measurement results with stable and quick convergence, therefore the measurement accuracy of the dynamic interferometer can be improved without any extra manual operation. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Keyword:
PHASE-SHIFTING INTERFEROMETRY
OPTICAL-SURFACES
VIBRATION
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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