Highly efficient and broadband wide-angle holography using patch-dipole nanoantenna reflectarrays.
Nano Lett
; 14(5): 2485-90, 2014 May 14.
Article
em En
| MEDLINE
| ID: mdl-24646057
ABSTRACT
We demonstrate wide-angle, broadband, and efficient reflection holography by utilizing coupled dipole-patch nanoantenna cells to impose an arbitrary phase profile on the reflected light. High-fidelity images were projected at angles of 45 and 20° with respect to the impinging light with efficiencies ranging between 40-50% over an optical bandwidth exceeding 180 nm. Excellent agreement with the theoretical predictions was found at a wide spectral range. The demonstration of such reflectarrays opens new avenues toward expanding the limits of large-angle holography.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Holografia
/
Nanotecnologia
/
Nanoestruturas
Idioma:
En
Revista:
Nano Lett
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Israel