Broadband highly-efficient dielectric metadevices for polarization control
Abstract
Metadevices based on dielectric nanostructured surfaces with both electric and magnetic Mie-type resonances have resulted in the best efficiency to date for functional flat optics with only one disadvantage: a narrow operational bandwidth. Here we experimentally demonstrate broadband transparent all-dielectric metasurfaces for highly efficient polarization manipulation. We utilize the generalized Huygens principle, with a superposition of the scattering contributions from several electric and magnetic multipolar modes of the constituent meta-atoms, to achieve destructive interference in reflection over a large spectral bandwidth. By employing this novel concept, we demonstrate reflectionless (~90% transmission) half-wave plates, quarter-wave plates, and vector beam q-plates that can operate across multiple telecom bands with ~99% polarization conversion efficiency.
Keywords
Cite
@article{arxiv.1603.05326,
title = {Broadband highly-efficient dielectric metadevices for polarization control},
author = {Sergey Kruk and Ben Hopkins and Ivan Kravchenko and Andrey Miroshnichenko and Dragomir N. Neshev and Yuri S. Kivshar},
journal= {arXiv preprint arXiv:1603.05326},
year = {2016}
}