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2 November 2018 Coherent optical phase recovery method based on boundary condition
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Phase information of coherent light is difficult to obtain directly through the Imaging optical system. At present, the more advanced method is to use coherent diffraction imaging method for phase recovery, but its imaging field of view is relatively small, and it is easy to appear the phenomenon of image reconstruction stagnation for objects with slightly complicated structure. Therefore, the effect of boundary conditions on coherent diffraction imaging method is studied in this paper. On the basis of the traditional coherent diffraction imaging method, this paper focuses on the transformation of the iterative conversion algorithm according to the different combination of the hybrid input and output method and the extrapolation method, and forms three new iterative conversion algorithms. The contrast experiment of coherent diffraction imaging method based on three new iterative transformation algorithms is designed by using interferometric test method. The experimental results show that the RMS value of the estimated phase deviation and ideal phase deviation is only 0.0096λ for the phase recovery method with single boundary condition, and the detection deviation RMS value is less than 0.0012λ for a phase recovery method with dual boundary conditions. This method has very important application value for phase recovery of coherent light.
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Wenbo Jing, Zhiyuan Zhao, Huanhuan Zou, and Xun Cui "Coherent optical phase recovery method based on boundary condition", Proc. SPIE 10818, Holography, Diffractive Optics, and Applications VIII, 1081820 (2 November 2018);

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