Terahertz nonlinear optics of graphene : from saturable absorption to high-harmonics generation
Hafez, Hassan A. (Universität Bielefeld. Fakultät für Physik)
Kovalev, Sergey (Helmholtz-Zentrum Dresden-Rossendorf)
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Bonn, Mischa (Max-Planck-Institut für Polymerforschung)
Gensch, Michael (Technische Universität Berlin. Institut für Optik und Atomare Physik)
Turchinovich, Dmitry (Universität Bielefeld. Fakultät für Physik)

Date:	2020
Abstract:	Graphene has long been predicted to show exceptional nonlinear optical properties, especially in the technologically important terahertz (THz) frequency range. Recent experiments have shown that this atomically thin material indeed exhibits possibly the largest nonlinear coefficients of any material known to date, paving the way for practical graphene-based applications in ultrafast (opto-)electronics operating at THz rates. Here the advances in the booming field of nonlinear THz optics of graphene are reported, and the state-of-the-art understanding of the nature of the nonlinear interaction of graphene with the THz fields based on the thermodynamic model of electron transport in graphene is described. A comparison between different mechanisms of nonlinear interaction of graphene with light fields in THz, infrared, and visible frequency ranges is also provided. Finally, the perspectives for the expected technological applications of graphene based on its extraordinary THz nonlinear properties are summarized. This report covers the evolution of the field of THz nonlinear optics of graphene from the very pioneering to the state-of-the-art works. It also serves as a concise overview of the current understanding of THz nonlinear optics of graphene and as a compact reference for researchers entering the field, as well as for the technology developers.
Grants:	European Commission 804349 European Commission 654220 Ministerio de Economía y Competitividad SEV-2017-0706
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Graphene ; High-harmonics generation ; Terahertz frequencies ; Thermodynamic model ; Ultrafast nonlinear optics
Published in:	Advanced optical materials, Vol. 8, issue 3 (Feb. 2020) , art. 1900771, ISSN 2195-1071

DOI: 10.1002/adom.201900771

25 p, 3.7 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles