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Updated: Jan 30, 2026

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Color holographic display using single chip LCOS.

Zhe Han, Boxia Yan, Yan Qi

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    |January 16, 2019
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    Summary

    A new algorithm enables 3D color holographic display using a single Liquid Crystal on Silicon (LCOS) chip. This method, an evolution of G-S iteration, successfully generates and reconstructs full-color 3D holographic images.

    Area of Science:

    • Optics and Photonics
    • Holography
    • Display Technologies

    Background:

    • Traditional holographic displays often require complex setups.
    • Achieving full-color 3D holographic projection with a single chip presents significant challenges.
    • Existing algorithms may not be optimized for single-chip color holographic applications.

    Purpose of the Study:

    • To propose a novel algorithm for phase-only Computer-Generated Hologram (CGH) calculation.
    • To enable 3D color holographic display using a single Liquid Crystal on Silicon (LCOS) spatial light modulator (SLM).
    • To demonstrate the feasibility of the proposed method through numerical simulation and optical reconstruction.

    Main Methods:

    • Developed an algorithm evolving from the Gerchberg-Saxton (G-S) iteration.

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  • Replaced single-wavelength Fresnel diffraction with a color Fresnel diffraction process within the G-S algorithm.
  • Integrated the modified algorithm with "Ping-Pong" iteration for 3D color hologram calculation.

    • Main Results:

    • Successfully generated a hologram capable of projecting a color 3D image.
    • Numerical simulations validated the algorithm's performance.
    • Optical reconstruction using a single SLM-based system confirmed the realization of 3D color holographic display.

    Conclusions:

    • The proposed algorithm effectively calculates phase-only CGHs for 3D color display.
    • Single-chip LCOS technology can be utilized for advanced 3D color holographic applications.
    • The method offers a viable approach for practical 3D color holographic systems.