2018 SPIE Optics + Photonics, San Diego, United States
Aug 19 - 23, 2018 (Sun - Thu), San Diego Convention Center
<Oral Session>
Electrically controlled terahertz funneling for electromagnetically induced transparency analogue
Hyunseung Jung, Hyunwoo Jo, Wonwoo Lee, Moon Sung Kang, and Hojin Lee
Abstract
In this study, we propose an electrically switchable funneling of terahertz waves for electrically induced transparency (EIT) analogue by actively controllable metamaterial. The proposed EIT metamaterials consist of the orthogonally combined metallic cut-wire (CW) pair and pseudo complimentary cut-wire (CCW), where graphene lines are laid on the center of pseudo-CCW to control the funneling of terahertz waves at the transmission resonance of the EIT structure by using ion-gel coplanar gating system. In experimental results, we successfully show the modulation depth of 54.9% and the group delay change by 1 ps at the transmission peak of our EIT analogue.
