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All-Optical Nanometric Switch Based on the Directional Scattering of Semiconductor Nanoparticles

Authors :
García-Cámara, Braulio
Algorri, J. Francisco
Cuadrado, Alexander
Urruchi, Virginia
Sánchez-Pena, José Manuel
Serna, Rosalía
Vergaz, Ricardo
Source :
The Journal of Physical Chemistry - Part C; August 2015, Vol. 119 Issue: 33 p19558-19564, 7p
Publication Year :
2015

Abstract

A structure based on a dimer of silicon nanoparticles, presenting directional scattering in the visible range, was studied as a new design of an all-optical switch. The combination of spherical nanoparticles satisfying, at the same incident wavelength, the zero-backward and the minimum-forward scattering conditions can produce either a maximum or a minimum of the scattered field in the area between the nanoparticles. The modulation of the incident wavelength can be used as a switching parameter due to the sensitivity of these conditions to it. An optimization of the dimer setup, both in the distance between the nanoparticles and the incident wavelength, was numerically performed to obtain a maximum contrast. Also, near-field and far-field distributions of the electric field have been considered.

Details

Language :
English
ISSN :
19327447 and 19327455
Volume :
119
Issue :
33
Database :
Supplemental Index
Journal :
The Journal of Physical Chemistry - Part C
Publication Type :
Periodical
Accession number :
ejs36504087
Full Text :
https://doi.org/10.1021/acs.jpcc.5b06302