Broadband Vectorial Holography from the Visible to the Deep Ultraviolet Region Using Diamond Metasurfaces

The exceptional capability of metasurfaces to independently control the phase and polarization of light has fundamentally transformed holography, advancing it from conventional scalar forms to advanced vectorial systems with fully customized wavefronts and polarization properties. However, the operational bandwidth of metasurface-based vectorial holography has remained largely limited to the visible spectrum, constrained by the strong short-wavelength absorption of conventional meta-atom materials. Here, we break this spectral constraint by introducing a diamond-based vectorial metasurface platform that enables ultrabroadband holographic imaging from the visible down to the deep ultraviolet (DUV). We experimentally demonstrate a broadband geometric-phase meta-hologram operating continuously across this entire range, a multisegment DUV hologram generating tailored polarization distributions, and a polarization-multiplexed DUV meta-hologram. Leveraging diamond's outstanding DUV transparency, high damage threshold, and chemical robustness, this work establishes diamond metasurfaces as a robust and ultracompact platform for tailored vectorial holography under extreme spectral and environmental conditions. These advances facilitate transformative applications in high-density optical storage, secure communications, UV-based information encryption, and durable display systems.