Demonstration of ultrafast THz absorption modulation in a graphene-based thin absorber

Anastasios D. Koulouklidis, Anna C. Tasolamprou, Christina Daskalaki, Charalampos P. Mavidis, George Kenanakis, George Deligeorgis, Zacharias Viskadourakis, Polina Kuzhir, Maria Kafesaki, Eleftherios N. Economou, Costas M. Soukoulis, Stelios Tzortzakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present the experimental and theoretical study of an ultrafast, optically tunable graphene-based thin film absorption modulator for operation in the THz regime. An ultrafast near-IR pulse induces the generation of hot carriers in the graphene sheet, consequently, reducing its conductivity with a decay time of 2.79 ps. As a result, a modulation of 40% in the THz absorption at 2.17 THz is observed in the structure.

Original languageEnglish
Title of host publicationIRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherIEEE Computer Society
ISBN (Electronic)9781538682852
DOIs
Publication statusPublished - Sep 2019
Event44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France
Duration: 1 Sep 20196 Sep 2019

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2019-September
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
CountryFrance
CityParis
Period1/9/196/9/19

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ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Koulouklidis, A. D., Tasolamprou, A. C., Daskalaki, C., Mavidis, C. P., Kenanakis, G., Deligeorgis, G., Viskadourakis, Z., Kuzhir, P., Kafesaki, M., Economou, E. N., Soukoulis, C. M., & Tzortzakis, S. (2019). Demonstration of ultrafast THz absorption modulation in a graphene-based thin absorber. In IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves [8874587] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2019-September). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2019.8874587