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- W4283166187 abstract "It is known that there are obvious fly-back zone errors in the area of 2π phase resets of spatial light modulators(SLMs). It reduces the diffraction efficiency of the SLM, as a result, the accuracy of the wavefront modulation will be reduced. To reduce the fly-back zone error, this paper proposes a zoning variable module phase wrapping method based on the grayscale segmentation, which is marked as the module-n1π-n2π method. The experimental results show that the root-mean-square (RMS) value of the astigmatism term's deviation is from 0.0413λ reduced to 0.0277λ, which proves that the proposed method can improve the reconstruction accuracy of the non-rotationally symmetric aberrations and can effectively reduce the fly-back zone error. Compared with the traditional module-2π method, the module-n1π-n2π method does not need to consider the 2π correction of the modulation depth, therefore, it is more flexible and convenient. With the improvement of the wavefront modulation accuracy of SLMs, it will play a more important role in adaptive interferometry for optical freeform surfaces." @default.
- W4283166187 created "2022-06-21" @default.
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- W4283166187 date "2022-11-01" @default.
- W4283166187 modified "2023-09-29" @default.
- W4283166187 title "The improvement of the wavefront modulation accuracy of SLMs based on a grayscale segmentation of the phase modulation curve" @default.
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- W4283166187 doi "https://doi.org/10.1016/j.optlaseng.2022.107160" @default.
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