Control of Terahertz Nonlinearity in Graphene by Gating
- Resource Type
- Conference
- Authors
- Hafez, Hassan A.; Tielrooij, Klaas-Jan; Bonn, Mischa; Turchinovich, Dmitry
- Source
- 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2019 44th International Conference on. :1-2 Sep, 2019
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Graphene
Doping
Conductivity
Absorption
Logic gates
Bleaching
Probes
- Language
- ISSN
- 2162-2035
We study the dependence of the terahertz (THz) nonlinearity of graphene and its temporal dynamics on the free carrier concentration by THz-pump/THz-probe spectroscopy of a gated graphene at room temperature. The strong THz nonlinearity is attributed to electron heating by the driving THz field and shows a drastic dependence on the background electron concentration, demonstrating a wide-range tunability of the THz nonlinearity of graphene.