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    Area of Science:

    • X-ray imaging
    • Quantitative phase imaging
    • Microscopy

    Background:

    • Single-shot ptychography is a quantitative phase imaging technique using overlapping beams for rapid data acquisition.
    • Current x-ray applications are limited by optical constraints, hindering resolution.
    • Existing methods struggle with coherent interference from overlapping beams.

    Purpose of the Study:

    • To reinterpret single-shot ptychography as a structured illumination method.
    • To improve resolution beyond conventional limits in x-ray imaging.
    • To develop a reconstruction algorithm accounting for beam overlap and interference.

    Main Methods:

    • Viewing the multi-beam illumination as a single, structured function.
    • Pre-calibrating the structured illumination.
    • Employing the randomized probe imaging algorithm for data reconstruction.

    Main Results:

    • Achieved a resolution 3.5 times finer than the numerical aperture limit.
    • Successfully accounted for overlap and coherent interference between beams.
    • Demonstrated a novel approach for single-shot ptychography reconstruction.

    Conclusions:

    • The proposed reconstruction method offers significant resolution improvements for single-shot ptychography.
    • This approach is expected to benefit most single-shot ptychography experiments.
    • Findings have implications for designing next-generation single-shot x-ray microscopes.