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    Area of Science:

    • Optics and Photonics
    • Holography
    • Wavefront Modulation

    Background:

    • Partially temporal coherent light (PTCL) is used for holographic reconstruction to reduce speckle noise.
    • Encoding methods for computer-generated holograms (CGH) based on PTCL are not well-established.

    Purpose of the Study:

    • To propose and verify a novel method for encoding CGH using PTCL.
    • To improve the quality of reconstructed holographic images.

    Main Methods:

    • Utilizing PTCL with a broadband continuous spectrum to illuminate object images.
    • Discretizing the spectrum into wavelengths, assigning weights based on PTCL power spectrum.
    • Calculating phase distribution via summation of weighted discrete wavelength CGH phase distributions.
    • Employing Fresnel diffraction theory for diffractive transmission.
    • Implementing iterative algorithms to enhance modulation quality.

    Main Results:

    • Demonstrated feasibility of the proposed CGH encoding method through non-iterative modulation.
    • Achieved high-quality reconstructed images, outperforming methods using ideal temporal coherent light.
    • Validated results through consistent numerical simulations and optical experiments.

    Conclusions:

    • The proposed PTCL-based CGH encoding method offers a viable approach for high-quality holographic reconstruction.
    • This method provides a valuable reference for diverse wavefront modulation applications.
    • The technique effectively reduces speckle noise, enhancing display system performance.