We present a dynamically frequency tunable plasmon induced transparency(PIT) in metamaterial devices composed of a graphene nanostructure for the terahertz (1-10 THz) region. The most common way to get a PIT effect is creating the coupling between bright and dark modes. Graphene show unusual behavior that enables new tunable plasmonic metamaterials and applications in terahertz frequency range. The PIT resonant frequency can be dynamically tuned by varying the gate voltage applied to the graphene without re-fabrication the nanostructures. A metamaterial sensor based on these coupling effects yields a sensitivity of 8152 nm/RIU. PIT has been demonstrated to be able to greatly slow down the speed of light. Slow light is important for routing optical information. In the vicinity of the PIT transparent peak it offers a large positive group Index, suggesting slow light. At the transparent peak, the group Index is 278.7. These features show remarkable potential for slow light devices, optical sensing and switching in metamaterials.

© 2017 Optical Society of America

PDF Article
More Like This
Independently tunable dual-band plasmonically induced transparency in hybrid metal-graphene metamaterials at mid-infrared frequencies

Chen Sun, Zhewei Dong, Jiangnan Si, and Xiaoxu Deng
NoM4C.5 Novel Optical Materials and Applications (NOMA) 2017

Slow Light with Electromagnetically Induced Transparency in Metamaterials

P. Tassin, L. Zhang, Th. Koschny, E. N. Economou, and C. M. Soukoulis
EJ2_2 European Quantum Electronics Conference (EQEC) 2009

Tunable Transparency and Slow Light in Plasmonic Lattice

Lior Michaeli, Haim Suchowski, and Tal Ellenbogen
JTu2D.9 CLEO: Applications and Technology (CLEO_AT) 2020


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription