Near-field distributions of resonant modes in small dielectric objects on flat surfaces

We report numerical simulations of the coupling of waves, either propagating or evanescent, with the eigenmodes of dielectric nanocylinders and nanospheres upon substrates. The multiple interaction of light between these objects and the dielectric surface at which the evanescent waves are created is...

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Bibliographic Details
Published in:Optics letters 2000-06, Vol.25 (11), p.782-784
Main Authors: Arias-González, J R, Nieto-Vesperinas, M
Format: Article
Language:English
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Summary:We report numerical simulations of the coupling of waves, either propagating or evanescent, with the eigenmodes of dielectric nanocylinders and nanospheres upon substrates. The multiple interaction of light between these objects and the dielectric surface at which the evanescent waves are created is taken into account. In this way, we present an accurate procedure for predicting and controlling the creation of large field enhancements concentrated both within and near the nanoparticle compared with the angle of incidence and the state of polarization.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.25.000782