Waveguides: the future of holographic video?

摘要

Holographic video displays, featuring three-dimensional images, are about to "go large" and become a lot more affordable at the same time. Very large holographic displays could become feasible, even those the size of a room. The process depends on lithium niobate (LiNbO3) crystals, which boast excellent optical properties. Beneath the surface of the LiNbO3, microscopic channels, or "waveguides," are created to confine light passing through. A metal electrode is then deposited onto each waveguide, which can produce surface acoustic waves.