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Multiplexing information limits in multi-beam ptychography.

Daniel S Penagos Molina, Wilhelm Eschen, Chang Liu

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    Multi-beam ptychography significantly boosts imaging throughput by using multiple illumination beams. This lensless imaging technique achieves nearly fivefold throughput improvement, enabling faster scanning of larger areas.

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    Area of Science:

    • Optics
    • Imaging Science
    • Materials Science

    Background:

    • Ptychography is a lensless imaging technique that reconstructs a sample's image by scanning it with an illuminating beam.
    • Multi-beam ptychography utilizes multiple simultaneous beams to accelerate sample scanning and cover larger areas.

    Purpose of the Study:

    • To investigate the potential of multi-beam ptychography with numerous illumination channels for enhancing imaging throughput.
    • To assess the trade-offs between spatial resolution and throughput in multi-beam ptychography.

    Main Methods:

    • Exploration of multi-beam ptychography with a large number of illumination channels.
    • Validation using both synthetic and experimental data.
    • Implementation of massively multiplexed multi-beam ptychography with up to 64 channels.

    Main Results:

    • Multi-beam ptychography significantly increases imaging throughput, demonstrating an almost fivefold improvement.
    • A reduction in spatial resolution was observed compared to single-beam ptychography.
    • Reduced memory footprint and overhead time were achieved with the multi-beam approach.

    Conclusions:

    • Multi-beam ptychography offers a viable strategy for high-throughput imaging applications.
    • The technique enables efficient utilization of partially coherent light sources for ptychography.
    • Massively multiplexed multi-beam ptychography opens new avenues for advanced imaging.