Full-Color AR Holography by Chip-Integrated Meta-Optics

Image realism and vividness are critical metrics for evaluating optical display performance, particularly for augmented reality (AR) applications. Although previous metasurfaces have demonstrated holographic display capabilities, achieving full-color, high-fidelity holographic displays remains challenging. Here, we present an on-chip metasurface capable of high-fidelity and full-color holographic display for AR. By engineering nanoscale diatomic meta-atoms within each unit cell, we achieve precise dispersion engineering across multiple wavelength channels and independent modulation of two orthogonal polarizations, thereby enabling switchable full-color holographic display for AR. Moreover, benefiting from the on-chip propagation scheme, our system eliminates zero-order diffraction noise, significantly enhancing the signal-to-noise ratio. Consequently, it delivers high-fidelity and vividly colored holographic images even when displayed against complex real-world AR backgrounds. The integrated photonic design, channel multiplexing, and precise dispersion control of this on-chip full-color holographic platform make it a promising candidate for next-generation wearable AR displays and advanced information visualization technologies.