Open AccessPlasmon induced transparency in cascaded π-shaped metamaterials
Author(s) -
Arif E. Çetin,
Alp Artar,
Mustafa Türkmen,
Ahmet Ali Yanik,
Hatice Altug
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.022607
Subject(s) - electromagnetically induced transparency , metamaterial , plasmon , planar , optics , nanorod , transformation optics , materials science , slow light , coupling (piping) , optoelectronics , photonic metamaterial , physics , nanotechnology , photonic crystal , computer graphics (images) , computer science , metallurgy
We experimentally and numerically demonstrate a planar metamaterial consisting of two asymmetrically positioned π-structures in a single unit that exhibits plasmonic analogue of electromagnetically induced transparency (EIT). Through the coupling of the constituent nanorod elements, the proposed structure enables fine spectral tuning of the EIT-like behavior and controlling the location of near field enhancement. Originated from the asymmetric cascaded π-structures, we introduce a more compact system which possesses the EIT-like characteristics and as well as much smaller mode volumes. Due to these properties, the proposed metamaterials can be utilized for a wide range of applications including bio-chemical sensors, optical filters and modulators and enhancement of non-linear processes.