Modulation behaviors, conductivities, and carrier dynamics of single and multilayer graphenes
Date
2019Source Title
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Print ISSN
2162-2027
Electronic ISSN
2162-2035
Publisher
IEEE Computer Society
Language
English
Type
Conference PaperItem Usage Stats
165
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Abstract
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.
Keywords
ModulationConductivity
Graphene
Nonhomogeneous media
Substrates
Optical pumping
Time-domain analysis