Planar Metamaterials for Antireflection Coating

Details Planar Metamaterials for Antireflection Coating Planar Metamaterials for Antireflection Coating

2010-02-11

arxiv.org/abs/1002.2305v1

Physical Review Letters 105, 073901 (2010)

Physics

Optics

Scientific paper

10.1103/PhysRevLett.105.073901

We present a novel antireflection approach utilizing planar metamaterials on dielectric surfaces. It consists of a split-ring resonator array and a metal mesh separated by a thin dielectric spacer. The coating dramatically reduces the reflectance and greatly enhances the transmittance over a wide range of incidence angles and a narrow bandwidth. Antireflection is achieved by tailoring the magnitude and phase shifts of waves reflected and transmitted at metamaterial boundaries, resulting in a destructive interference in reflection and constructive interference in transmission. The coating can be very thin and there is no requirement for the spacer dielectric constant.

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