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    This study introduces a new wavelength multiplexing method for full-color holographic diffusers. The technique enhances efficiency and color balance in photopolymer-based holographic displays.

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Display Technology

    Background:

    • Holographic diffusers are crucial for full-color displays.
    • Improving the efficiency and color uniformity of holographic diffusers remains a challenge.
    • Photopolymer materials offer potential for holographic recording.

    Purpose of the Study:

    • To propose and experimentally validate a compact wavelength multiplexing technique for full-color holographic diffusers.
    • To optimize the diffraction efficiency and color balance of holographic diffusers.
    • To assess the suitability of the developed method for manufacturing full-color holographic displays.

    Main Methods:

    • Development of a compact wavelength multiplexing technique.
    • Experimental investigation using photopolymer films.
    • Time-scheduled exposure at three wavelengths (633, 532, and 473 nm).
    • Iterative exposure sequences to achieve specific color balance.

    Main Results:

    • Characterization of exposure responses for monochromatic and multiplexed holograms.
    • Optimization of diffraction efficiency through controlled exposure energies.
    • Demonstration of a specific color balance for multicolor holographic diffusers.
    • Validation of the fabrication method's effectiveness.

    Conclusions:

    • The proposed wavelength multiplexing technique effectively improves full-color holographic diffuser efficiency.
    • The time-scheduled exposure method ensures optimal color balance for display applications.
    • This fabrication approach is well-suited for manufacturing advanced holographic diffusers.