Modulation Behaviors, Conductivities, and Carrier Dynamics of Single and Multilayer Graphenes
- Resource Type
- Conference
- Authors
- Kaya, Emine; Kakenov, Nurbek; Kocabas, Coskun; Altan, Hakan; Esenturk, Okan
- 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
Modulation
Conductivity
Graphene
Nonhomogeneous media
Substrates
Optical pumping
Time-domain analysis
- Language
- ISSN
- 2162-2035
Time domain and time resolved terahertz studies of single- and multi-layer graphene (SLG and MLG) samples and modulator devices will be presented. A high performance up to 100% of modulators were observed with the devices even at very low voltages. High modulation depth over such a broad spectrum and simple device structure brings significant importance toward application of this type of device in THz and related technologies. In addition, conductivities of SLG and MLG devices were also investigated and a change in behavior was observed as the layer thickness increased. The charge carriers dynamics of the samples with pulp fluence and color was also highly interesting.