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    Area of Science:

    • Optics and Photonics
    • Digital Holography
    • Image Processing

    Background:

    • Holographic projection often suffers from ringing artifacts and speckle noise, particularly when using random phase-free methods.
    • Existing methods for noise reduction can introduce degradation and do not always adequately suppress artifacts.

    Purpose of the Study:

    • To present a novel, fast method for suppressing ringing artifacts in random phase-free kinoforms.
    • To improve the quality of reconstructed holographic images while increasing computational efficiency.

    Main Methods:

    • Reducing the distance between the hologram and focal planes while maintaining focal length.
    • Modulating complex amplitude using a single spatial light modulator.

    Main Results:

    • Significant reduction in ringing artifacts and speckle noise in reconstructed images.
    • Demonstrated increase in computational speed compared to conventional methods.
    • Validation through numerical simulations and optical experiments.

    Conclusions:

    • The proposed method effectively suppresses artifacts and noise in holographic projections.
    • This approach offers a faster and more efficient solution for random phase-free kinoforms.
    • The technique shows promise for practical applications in holographic display and imaging.