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- W2919777624 abstract "Optical combiners are see through optical components, which fuse a virtual image with the real-world scene, and play a key part in near-to-eye (NTE) visors and head-up displays (HUDs). Several types of optical combiners have been demonstrated in the past1,2. A common combiner scheme consists of a diffraction grating that couples light in and out of a planar waveguide. This combiner is durable, relatively easy to manufacture, and can project high-resolution images. Projecting a full color image, however, is challenging due to large chromatic aberrations, and requires more complex design schemes. In this work, we present an optical combiner, which is based on a planar waveguide with embedded multilayered plasmonic metasurfaces, serving as achromatic diffractive grating couplers. The multilayered metasurface grating couplers are ultra-thin (<500nm) and highly transparent (~90%). We fabricated 1mmX1mm metasurface based gratings using a standard E-beam lithography technique. The grating is designed to diffract only a specific wavelength range in the visible spectrum. Thus, it is possible to stack three layers of such metasurface gratings and couple a full color (RGB) image into a single waveguide, while compensating for the inherent chromatic dispersion of diffractive grating couplers." @default.
- W2919777624 created "2019-03-11" @default.
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- W2919777624 date "2019-03-01" @default.
- W2919777624 modified "2023-10-16" @default.
- W2919777624 title "Full-color optical combiner based on multilayered metasurface design" @default.
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- W2919777624 doi "https://doi.org/10.1117/12.2510273" @default.
- W2919777624 hasPublicationYear "2019" @default.
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