Transmission resonances in periodic U-shaped metallic nanostructures
2010 (English)In: Optics Express, ISSN 1094-4087, Vol. 18, no 17, 17719-17728 p.Article in journal (Refereed) Published
The spectral response of crescent-like metallic nanostructures, a sub-class of U-shaped split-ring resonators, on a glass substrate at normal incidence is studied numerically. Also, the interpretation of transmission resonances arising from periodic conventional standard split-ring resonators with rectangular edges (SSRR) at normal incidence is revisited. In particular, we focus on one specific transmission resonance which is present for nano-crescents (NC) but absent in the case of SSRRs used for metamaterials. It is proposed that for a U-shaped metallic structure of arbitrary geometry, coupling of plasmonic eigen modes at all the surfaces of the three-dimensional structure is essential to be considered. The manner in which the coupling takes place between plasmonic modes at all the surfaces of the three-dimensional structure is what completely characterizes transmission resonances, and it is unique for each given resonance. (C) 2010 Optical Society of America
Place, publisher, year, edition, pages
2010. Vol. 18, no 17, 17719-17728 p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-26842ISI: 000281054400015ScopusID: 2-s2.0-77956354494OAI: oai:DiVA.org:kth-26842DiVA: diva2:374589
QC 201012062010-12-062010-11-292012-10-17Bibliographically approved