A broadband, background-free quarter-wave plate based on plasmonic metasurfaces.
Nano Lett
; 12(12): 6328-33, 2012 Dec 12.
Article
em En
| MEDLINE
| ID: mdl-23130979
ABSTRACT
We demonstrate optically thin quarter-wave plates built with metasurfaces that generate high-quality circularly polarized light over a broad wavelength range for arbitrary orientation of the incident linear polarization. The metasurface consists of an array of plasmonic antennas with spatially varying phase and polarization responses. Experimentally demonstrated quarter-wave plates generate light with a high degree of circular polarization (>0.97) from λ = 5 to 12 µm, representing a major advance in performance compared to previously reported plasmonics-based wave plates.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Ressonância de Plasmônio de Superfície
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article