High $Q$-factor and large group delay at microwave wavelengths via electromagnetically induced transparency in metamaterials

Abstract

We report on our numerical work concerning a planar metamaterial exhibiting classical electromagnetically induced transparency (EIT). Using a structure with two asymmetric short strips, we demonstrate that an EIT-like resonance with a high quality factor can be achieved and this high quality factor leads to a large group index of the order of 700. The operation of metamaterial at low temperatures is anticipated to be a promising path towards low-loss metamaterials since nonradiative losses are strongly suppressed. By decreasing temperature from 300 K to 100 K, a controlled behavior with a 26% increase in the quality factor of the resonance and an 85% increase in the group index was observed.

© 2012 Optical Society of America

Large group delay in a microwave metamaterial analog of electromagnetically induced reflectance

Zohreh Vafapour
J. Opt. Soc. Am. A 35(3) 417-422 (2018)

A novel planar metamaterial design for electromagnetically induced transparency and slow light

Junqiao Wang, Baohe Yuan, Chunzhen Fan, Jinna He, Pei Ding, Qianzhong Xue, and Erjun Liang
Opt. Express 21(21) 25159-25166 (2013)

Planar designs for electromagnetically induced transparency in metamaterials

Philippe Tassin, Lei Zhang, Thomas Koschny, E. N. Economou, and C. M. Soukoulis
Opt. Express 17(7) 5595-2605 (2009)

Highly-dispersive electromagnetic induced transparency in planar symmetric metamaterials

Xiqun Lu, Jinhui Shi, Ran Liu, and Chunying Guan
Opt. Express 20(16) 17581-17590 (2012)

Dynamic electromagnetically induced transparency based on a metal-graphene hybrid metamaterial

Chenxi Liu, Peiguo Liu, Cheng Yang, Yue Lin, and Song Zha
Opt. Mater. Express 8(5) 1132-1142 (2018)