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A high-efficiency complex amplitude recovery method based on iterative multiple focus

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Abstract

During the multi-image phase recovery process, most existing methods can carry out phase recovery only between pure phase distribution. In the field of optics, liquid crystal spatial light modulator (LC-SLM) has the potential to simulate lenses with different focal lengths, which solves the problems of time-consuming and human errors in the device adjustment of the multi-image phase recovery algorithm. These abilities raise the following questions: Combining the automation features of LC-SLM with the new complex amplitude recovery method, can the reconstructed amplitudes have higher contrast and clearer phase details? To solve these problems, on the basics of LC-SLM, iterative multiple focus (IMF) was applied to reconstruct the original image's complex amplitude distribution. Verification of four datasets from different types was performed. The results demonstrated that by applying the high convergence speed and high recovery accuracy of the IMF algorithm, the method proposed in this paper could be well applied to medical image detection and other aspects.

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Acknowledgements

The authors would like to thank Cheng Guo from the Engineering Center of Ultra-Precision Optoelectronic Instrument of Harbin Institute of Technology for his technical support.

Funding

Program for Science and Technology Development of Changchun City (18YJ014); Fundamental Research Funds for the Central Universities (2412019FZ035).

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Correspondence to Jipeng Huang.

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Yu, Y., Li, N., Huang, J. et al. A high-efficiency complex amplitude recovery method based on iterative multiple focus. Eur. Phys. J. Plus 137, 556 (2022). https://doi.org/10.1140/epjp/s13360-022-02730-7

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  • DOI: https://doi.org/10.1140/epjp/s13360-022-02730-7

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