Work

Angle-Multiplexed Metasurfaces: Encoding Independent Wavefronts in a Single Metasurface under Different Illumination Angles

Year: 2017

Type: article

Abstract: The angular response of thin diffractive optical elements is highly correlated.For example, the angles of incidence and diffraction of a grating are locked through the grating momentum determined by the grating period.Other diffractive devices, including conventional metasurfaces, have a similar angular behavior due to the fixed locations of the Fresnel zone boundaries and the weak angular sensitivity of the meta-atoms.To alter this fundamental property, we introduce angle-multiplexed metasurfaces, composed of reflective highcontrast dielectric U-shaped meta-atoms, whose response under illumination from different angles can be controlled independently.This enables flat optical devices that impose different and independent optical transformations when illuminated from different directions, a capability not previously available in diffractive optics.

Source: Physical Review X

DOI: 10.1103/physrevx.7.041056

Authors: Seyedeh Mahsa Kamali, Ehsan Arbabi, Amir Arbabi, Yu Horie, MohammadSadegh Faraji-Dana, Andrei Faraon

Institutions: California Institute of Technology, Kavli Nanoscience Institute, University of Massachusetts Amherst

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $4,200

Funders: U.S. Department of Energy, Defense Advanced Research Projects Agency, Samsung, Kavli Institute for Theoretical Physics, University of California, Santa Barbara