Invited Article: Broadband highly efficient dielectric metadevices for polarization control

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...

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Bibliographic Details
Published in:APL photonics 2016-06, Vol.1 (3), p.030801-030801-9
Main Authors: Kruk, Sergey, Hopkins, Ben, Kravchenko, Ivan I., Miroshnichenko, Andrey, Neshev, Dragomir N., Kivshar, Yuri S.
Format: Article
Language:English
Subjects:
broadband transmission
dielectrics
MATERIALS SCIENCE
nanostructures
polarization
polarizers
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Summary: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.
ISSN:2378-0967
2378-0967
DOI:10.1063/1.4949007