In this paper, a dual-beam illuminating 3PIE method is proposed on the basis of the single-beam illuminating 3PIE method, and the simulation result shows that the reconstructed images are influenced by the phase inclination factor of the initial guessed illumination light beam.

2021年1月15日 · Ptychographic X-ray microscopy is an ideal tool to observe chemical processes under in situ conditions. Chemical reactors, however, are often thicker than the depth of field, limiting the lateral...

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Diffraction intensities of the 3D ptychographic iterative engine (3PIE) were written as a set of linear equations of the self-correlations of Fourier components of all sample slices, and an effective computing method was developed to solve these linear equations for the transmission functions of all sample slices analytically.

2014年5月19日 · By splitting a sample into axial sections, we demonstrated in recent work that this thickness restriction can be relaxed and whats-more, that coarse optical sectioning can be realized using a...

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2017年11月15日 · The complex amplitude transmittances of internal defects at different calculated axial section positions are simultaneously retrieved by modified-3PIE. Based on modified-3PIE, we can identify the defect and provide useful information for removing the internal defect to improve the quality of the optical components.

在单光束照明3PIE (Ptychographic Iterative Engine)方法中,照明光垂直照射在待测样品表面,没有考虑照明光倾斜对重构结果的影响.在单光束照明3PIE方法的基础上提出了双光束照明3PIE方法,同时模拟分析了初始猜测照明光中相位倾斜因子对成像质量的影响.双光束照明3PIE ...

2021年4月15日 · Multi-slice ptychography is a diffractive imaging technique that can reconstruct the information of a 3-D object from its diffraction intensities. In this article, we propose a multi-slice ptychographic encoding method for the encryption of multiple and color images.

2019年2月18日 · A multiple slices approach in ptychography, termed 3ePIE algorithm, solves the multiple scattering problems of thick samples, which is crucial to biomedical imaging and in situ studies.