Plasmon induced transparency in cascaded pi-shaped metamaterials


Cetin A. E., Artar A., Turkmen M., Yanik A. A., Altug H.

OPTICS EXPRESS, vol.19, no.23, pp.22607-22618, 2011 (SCI-Expanded) identifier

  • 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: No

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