Plasmon induced transparency in cascaded pi-shaped metamaterials
OPTICS EXPRESS, vol.19, no.23, pp.22607-22618, 2011 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 19 Issue: 23
- Publication Date: 2011
- Doi Number: 10.1364/oe.19.022607
- Journal Name: OPTICS EXPRESS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.22607-22618
- Erciyes University Affiliated: Yes
Abstract
We experimentally and numerically demonstrate a planar metamaterial consisting of two asymmetrically positioned pi-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 pi-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. (C)2011 Optical Society of America