Double Fano resonances in a composite metamaterial possessing tripod plasmonic resonances. (22nd January 2015)

• Record Type: Journal Article
• Authors: Lee, Y U; Choi, E Y; Kim, E S; Woo, J H; Kang, B; Kim, J; Park, Byung Cheol; Hong, T Y; Kim, Jae Hoon; J W Wu,
• Is Part Of: Journal of optics. Volume 17:Number 2(2015:Feb.)
• Publication Date: 2015-01-22
• Subjects: metamaterial -- terahertz spectroscopy -- Fano resonance; 81.05.Xj -- 78.67.Pt; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/2/025103
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: By embedding four-rod resonators inside a double-split ring resonator superlattice, a planar composite metamaterial possessing tripod plasmonic resonances is fabricated. Double Fano resonances are observed where a common subradiant driven oscillator is coupled with two superradiant oscillators. As a classical analogue of a four-level tripod atomic system, the extinction spectrum of the composite metamaterial exhibits a coherent effect based on double Fano resonances. Transfer of the absorbed power between two orthogonal superradiant oscillators is shown to be mediated by the common subradiant oscillator.