2017/11/06 by Seyedeh Mahsa Kamali, Ehsan Arbabi, Kamali, Seyedeh Mahsa +9
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #Orbital Angular Momentum in Optics
paper · pdf · doi:10.48550/arxiv.1711.02265
openalex publication_date 2017/11/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The angular response of thin diffractive optical elements is highly\ncorrelated. For example, the angles of incidence and diffraction of a grating\nare locked through the grating momentum determined by the grating period. Other\ndiffractive devices, including conventional metasurfaces, have a similar\nangular behavior due to the fixed locations of the Fresnel zone boundaries and\nthe weak angular sensitivity of the meta-atoms. To alter this fundamental\nproperty, we introduce angle-multiplexed metasurfaces, composed of reflective\nhigh-contrast dielectric U-shaped meta-atoms, whose response under illumination\nfrom different angles can be controlled independently. This enables flat\noptical devices that impose different and independent optical transformations\nwhen illuminated from different directions, a capability not previously\navailable in diffractive optics.\n