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- W4285992058 abstract "Adaptive optics (AO) can effectively correct wavefront aberration, with many works qualitatively utilizing the defocus preconditioner to improve the aberration correction accuracy, but no work has yet quantitatively optimized the defocus distance to obtain higher accuracy. Spurred by the theoretical gap, this paper provides the derivation revealing the mechanism of the above phenomenon and proposes a theoretical method for determining the optimal defocus distance (OPDD) according to AO system parameters instead of numerous tests. Given that the complex conjugate amplitude can generate the same point spread function (PSF), we define the dual wavefront and present the Zernike coefficients expression with additional aberration due to the PSF variation. Then we derive the probability of the dual wavefront (PDWF) with the relevant conclusions of label noise. We suppose that the defocus preconditioner reduces the PDWF, thus effectively improving the accuracy, which is verified through the quantitative analysis where a deep neural network is utilized to correct aberration. Furthermore, the correction accuracy at the theoretical OPDD is no less than 98% of the highest accuracy in experiments, which quantitatively demonstrates the effectiveness of the method. Overall, this work significantly improves the efficiency of the AO system setup." @default.
- W4285992058 created "2022-07-21" @default.
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- W4285992058 date "2022-11-01" @default.
- W4285992058 modified "2023-10-18" @default.
- W4285992058 title "Derivation of Ambiguity in Wavefront Aberration and Quantitative Analysis in AO System" @default.
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- W4285992058 doi "https://doi.org/10.1016/j.optlaseng.2022.107174" @default.
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