Sub-wavelength patterning of the optical near-field

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Title:	Sub-wavelength patterning of the optical near-field
Author:	Quidaint, R; Badenes, G; Cheylan, Stephanie; Alcubilla González, Ramón; Weeber, J C; Girard, C
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
Abstract:	We report the sub-wavelength patterning of the optical near-field by total internal reflection illumination of a regular array of resonant gold nano-particles. Under appropriate conditions, the in-plane coupling between Localized Surface Plasmon (LSP) fields gives rise to sub-wavelength light spots between the structures. Measurements performed with an Apertureless Scanning Near-Field Optical Microscope (ASNOM) show a good agreement with theoretical predictions based on the Green dyadic method. This concept might offer a convenient way to elaborate extended optical trap landscapes for manipulation of sub-micrometer systems.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica -Optical communications -Electron beam lithography -Scanning electron microscopy -Surface enhanced Raman scattering -Surface plasmons -Total internal reflection -White light -Comunicacions òptiques
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Document type:	Article - Published version Article
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