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Out-of-plane computer-generated multicolor waveguide holography
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DOI：10.1364/OPTICA.6.000119.png)
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Abstract
En 中文
Multicolor waveguide holography remains a challenge due to its inherent design complexity, compounded by the limited low-loss materials available in the optical range as well as challenges in nanofabrication. In this study, we first propose and experimentally demonstrate a multicolor, computer-generated hologram (CGH) in an all-dielectric waveguide metasurface system. Light beams from three different color laser sources ( red, green, and blue) are coupled into the waveguide via a single-period grating without any beam splitters or prisms. A multicolor holographic image can be decoupled in the far field through a binary metasurface CGH without any lenses. This technology enables lens-free, ultraminiature augmented and virtual reality displays. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords:
COUPLED-MODE THEORY
METASURFACE HOLOGRAMS
WIDE-ANGLE
GRATINGS
PHASE
EFFICIENT
SURFACE
DESIGN
OPTICS
IMAGE