Authors:	S. Rodriguez, O. Janssen, G. Lozano, A. Omari, Z. Hens, J. G. Rivas
Title:	Near-field resonance at far-field induced transparency in diffractive arrays of plasmonic nanorods
Format:	International Journal
Publication date:	3/2013
Journal/Conference/Book:	Optics Letters
Volume(Issue):	38(8) p.1238-1240
DOI:	10.1364/ol.38.001238
Citations:	14 (Dimensions.ai - last update: 24/11/2024) 6 (OpenCitations - last update: 10/5/2024) Look up on Google Scholar
Download:	(465KB)

Abstract

We numerically demonstrate that a periodic array of metallic nanorods sustains a maximum near-field enhancement and a far field (FF)-induced transparency at the same energy and in-plane momentum. The coupling of bright and dark plasmonic lattice resonances, and electromagnetic retardation along the nanorod length, are responsible for this effect. A standing wave with a quadrupolar field distribution is formed, giving rise to a collective suppression of
FF scattering and simultaneously enhanced local fields.