Long-term efficiency preservation for gradient phase metasurface diffraction gratings in the visible

Nikolov, Daniel; Cheng, Fei; Basaran, Necdet; Bauer, Aaron; Rolland, Jannick P.; Vamivakas, A. Nick

doi:10.1364/ome.8.002125

Cited by 5 publications

(2 citation statements)

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“…The brass substrate is coated with a 120-nm layer of Ag and a 75-nm layer of SiO 2 . These two layers are essential for the function of the used metal-dielectric-metal (Ag-SiO 2 -Ag)–type metasurface grating ( 44 , 45 ). The grating covers the active metaform area of 2 mm by 1.5 mm.…”

Section: Resultsmentioning

confidence: 99%

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Metaform optics: Bridging nanophotonics and freeform optics

et al. 2021

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The demand for high-resolution optical systems with a compact form factor, such as augmented reality displays, sensors, and mobile cameras, requires creating new optical component architectures. Advances in the design and fabrication of freeform optics and metasurfaces make them potential solutions to address the previous needs. Here, we introduce the concept of a metaform—an optical surface that integrates the combined benefits of a freeform optic and a metasurface into a single optical component. We experimentally realized a miniature imager using a metaform mirror. The mirror is fabricated via an enhanced electron beam lithography process on a freeform substrate. The design degrees of freedom enabled by a metaform will support a new generation of optical systems.

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Section: Resultsmentioning

confidence: 99%

“…The simulation process is identical to the one used in previous publications on Ag-SiO 2 -Ag metasurface gratings ( 44 , 45 ). A parameter sweep for a single Ag nano-token with an Ag backplate and a SiO 2 spacer was performed by varying the token width and height (from 40 to 300 nm).…”

Section: Methodsmentioning

confidence: 99%