Highly angle-sensitive and efficient optical metasurfaces with broken mirror symmetry.

ABSTRACT: Optical metasurfaces have great potential to overcome the functional limitations of conventional optical devices. In addition to polarization- or wavelength-multiplexed metasurfaces, angle-multiplexed metasurfaces can provide new degrees of freedom, enabling previously unrealized complex functionality in diverse applications such as LiDAR, augmented reality glasses, and imaging. However, there have been fundamental trade-offs in transmission efficiency and angular sensitivity for practically important paraxial rays. In this paper, we overcome this limitation by breaking mirror symmetries of single-layer metasurface structures. Based on an effective medium theory, we intuitively explain which material parameters affect the sensitivity and efficiency and prove that high sensitivity and high

SUBMITTER: Kim N 

PROVIDER: S-EPMC11501263 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature