Terahertz Properties of Graphene

Abstract

Graphene has proved itself as being unique in terms of fundamental physics, and of particular importance for post-silicon electronics. Research into graphene has divided into two branches, one probing the remarkable electronic and optical properties of graphene, and the other pursuing technologically viable forms of the material. Terahertz time domain spectroscopy (THz TDS) is a powerful tool for both, able to characterise the free carrier response of graphene and probe the inter and intraband response of excited carriers with sub-ps time resolution. We review THz TDS and related THz measurements of graphene.

Terahertz communication: The opportunities of wireless technology beyond 5G

“…Practical applications also require electromagnetically reconfigurable materials which constitute the basis of all active THz components. In this context, graphene has received the recognition of the scientific community as a result of its strengths in atomic thickness, tunability and high kinetic inductance where it is possible to reform THz electromagnetic waves by using thin graphene layers [14]. Consequently, graphenebased THz components have shown very promising results in terms of generating, modulating as well as detecting THz waves [15].…”

Planar hyperlens based on a modulated graphene monolayer

“…Although SPPs on metals and on graphene have considerable qualitative similarities, graphene SPPs generally exhibit stronger confinement to the surface, efficient wave localization up to mid-infrared frequencies, 19,25 and they are highly tunable (which is one of their most unique and important properties). 3 Applications of graphene SPPs include electronics, [26][27][28] optics, [29][30][31] THz technology, [32][33][34] light harvesting, 35 metamaterials, 36 and medical sciences. 37,38 In this work we study the canalization of SPPs on graphene, which can have direct applications for sub-wavelength imaging using THz sources.…”

Dual-band high-frequency metamaterial absorber based on patch resonator for solar cell applications and its enhancement with graphene layers

“…Additionally, those metamaterial structures and devices can also be improved by using graphene layer(s), a new generation material. The first singlelayer graphene has been fabricated in 2004 [18]. Obtaining a high conductivity by using graphene is one of the main advantage of the graphene based structures.…”