Metamaterials, artificial structures with unexpected properties, only function over a limited spectral window. Scientists have recently determined that the technique of combining a metallic metamaterial with a dielectric interlayer creates a device that modulates light over a wide range of frequencies.

https://absimage.aps.org/image/MAR15/MWS_MAR15-2014-001183.pdf

Controlling the Polarization State of Light with a Dispersion-Free Metastructure

Abstract Metasurfaces, composed of specifically designed subwavelength units in a two-dimensional plane, offer a new paradigm to design ultracompact optical elements that show great potentials for miniaturizing optical systems. In the past few decades, metasurfaces have drawn broad interests in multidisciplinary communities owing to their capability of manipulating various parameters of the light wave with plentiful functionalities. Among them, pixelated polarization manipulation in the subwavelength scale is a distinguished ability of metasurfaces compared to traditional optical components. However, the inherent ohmic loss of plasmonic-type metasurfaces severely hinders their broad applications due to the low efficiency. Therefore, metasurfaces composed of high-refractive-index all-dielectric antennas have been proposed to achieve high-efficiency devices. Moreover, anisotropic dielectric nanostructures have been shown to support large refractive index contrast between orthogonal polarizations of light and thus provide an ideal platform for polarization manipulation. Herein, we present a review of recent progress on all-dielectric metasurfaces for polarization manipulation, including principles and emerging applications. We believe that high efficient all-dielectric metasurfaces with the unprecedented capability of the polarization control can be widely applied in areas of polarization detection and imaging, data encryption, display, optical communication and quantum optics to realize ultracompact and miniaturized optical systems.

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All-dielectric metasurfaces for polarization manipulation: principles and emerging applications

Multi-band giant circular dichroism based on conjugated bilayer twisted-semicircle nanostructure at optical frequency

High-efficiency terahertz full-space metasurface for the transmission linear and reflection circular polarization wavefront manipulation

Yunping Qi(祁云平)1,† Baohe Zhang(张宝和)1, Jinghui Ding(丁京徽)1, Ting Zhang(张婷)1, Xiangxian Wang(王向贤)2, and Zao Yi(易早)3 1College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China 2School of Science, Lanzhou University of Technology, Lanzhou 730050, China 3Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621900, China

Lirong Huang

Papers

Broadband and highly efficient polarization conversion in infrared region using plasmonic metasurfaces

Tunable polarization rotation using non-chiral all-dielectric metasurfaces