Nonlinear effects in resonators comprising graphene


 EDULL34 (ΕΔΒΜ34) - Supporting researchers with emphasis on new researchers
The project Nonlinear effects in resonators comprising graphene (MIS 5004717) investigates the integration of graphene in optical resonant systems, exploiting the fascinating nonlinear properties of graphene for proposing highly functional photonic/THz components. Specifically, the research focuses on demonstrating optical logic gate functions and new frequencies generation by taking advantage of third-order nonlinear processes such as optical bistability, cross-phase modulation, four-wave mixing, and third-harmonic generation. The study extends across both THz and near-infrared frequency regimes, which are of significant importance for diverse contemporary applications. The research employs a specifically-developed in-house electromagnetic toolset, combing the finite-element method with temporal coupled mode theory and perturbation theory. The developed computational framework provides an efficient and accurate approach for modelling resonant nonlinear systems comprising two-dimensional (2D) or sheet materials, meticulously taking into account their inherent anisotropic and highly dispersive nature. The analysis is complemented with rigorous solid-state theory studies for accurately describing the dynamical configuration of graphene electromagnetic properties by means of electrical gating. The project aims to pave the way for studying diverse nonlinear effects in resonant systems comprising graphene, bringing the class of 2D materials one step closer to practical nonlinear applications.

It is a 15-month project, launched in 2018, and is co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Program “Human Resources Development, Education and Lifelong Learning 2014-2020”.


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