Metasurface holograms for visible light

Xingjie Ni, Alexander V. Kildishev and Vladimir M. Shalaev ()
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Xingjie Ni: School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University
Alexander V. Kildishev: School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University
Vladimir M. Shalaev: School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University

Nature Communications, 2013, vol. 4, issue 1, 1-6

Abstract: Abstract Holography, a revolutionary 3D imaging technique, has been developed for storing and recovering the amplitude and phase of light scattered by objects. Later, single-beam computer-generated phase holography was proposed for restoring the wavefront from a given incidence. However, because the phase modulation depends on the light propagation inside the material, the thickness of phase holograms usually remains comparable to the wavelength. Here we experimentally demonstrate ultra-thin metasurface holograms that operate in the visible range whose thickness is only 30 nm (approximately 1/23 of the operational wavelength). To our knowledge, this is the thinnest hologram that can provide both amplitude and phase modulation in the visible wavelength range, which generates high-resolution low-noise images. Using this technique, not only the phase, but potentially the amplitude of the incident wave can be efficiently controlled, expanding the route to new applications of ultra-thin and surface-confined photonic devices.

Date: 2013
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DOI: 10.1038/ncomms3807

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