Review

Planar Photonics with Metasurfaces

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Science  15 Mar 2013:
Vol. 339, Issue 6125, 1232009
DOI: 10.1126/science.1232009

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A Move to Planar Optics

Metamaterials allow light to be manipulated in ways that cannot be done with naturally available materials. Subwavelength metallic nanoantenna arrays patterned onto a surface can provide the basis for planar optical devices, in which bulk optical elements that are typically thousands of wavelengths in size can be "flattened" into a two-dimensional sheet less than a wavelength thick. Kildishev et al. (10.1126/science.1232009) review progress in the optics of metasurfaces and discuss promising applications for surface-confined planar photonics components.