Experimental observation of ultrafast THz absorption modulation in a graphene-based metasurface

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

Graphene, a two-dimensional material made of carbon atoms arranged in a honeycomb lattice, has attracted enormous attention since its experimental realization in 2004 [1] due to its unique mechanical, thermal, electrical and optical properties. Particularly in the THz spectrum, graphene predominantly exhibits a Drude-like response due to its easily generated and controlled free carriers and therefore is considered a suitable platform for dynamically tunable metasurface components [2]. Such an example, are the so called thin film absorbers that are structures capable of absorbing all power of incident electromagnetic waves. They are used as non-reflective covering layers for shielding against electromagnetic radiation and minimization of backscattering from electromagnetic large structures. Within the concept of metasurfaces, thin film absorbers, are usually implemented by placing a lossy material on the top of a perfectly conducting metallic plate [3]. Recently, an electrostatic gate-tunable perfect absorber based on a monolayer graphene over a grounded dielectric was demonstrated experimentally in the low THz regime [4]. Nevertheless, the dynamic control of the absorption properties of such devices in an ultrafast way still remains a challenge.

Original languageEnglish
Title of host publication2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728104690
DOIs
Publication statusPublished - Jun 2019
Event2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 - Munich, Germany
Duration: 23 Jun 201927 Jun 2019

Publication series

Name2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019

Conference

Conference2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
CountryGermany
CityMunich
Period23/6/1927/6/19

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ASJC Scopus subject areas

  • Spectroscopy
  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications

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). Experimental observation of ultrafast THz absorption modulation in a graphene-based metasurface. In 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 [8872148] (2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEOE-EQEC.2019.8872148