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2016-02-08 - Colloque/Article dans les actes avec comité de lecture - Anglais - 4 page(s)

Altares Menendez Galaad , Rosolen Gilles , Maes Bjorn , "Graphene plasmons embedded in a gain medium" in 20th Annual Symposium of the IEEE Photonics Benelux Chapter, Brussels, Belgium, 2016

  • Codes CREF : Matériaux optiques (DI1256)
  • Unités de recherche UMONS : Matériaux Micro et Nanophotoniques (S803)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Physique des matériaux (CRPM)
Texte intégral :

Abstract(s) :

(Anglais) Graphene plasmonics has attracted much attention because of its remarkable properties such as tunable conductivity and extreme confinement. However, one of the major drawbacks to develop more efficient devices based on graphene plasmons remains losses. Here we study how the introduction of a gain medium surrounding graphene can affect plasmonic modes, both in 1D and 2D settings. We show the presence of a critical gain in 1D structures when the losses are entirely compensated. Furthermore, using numerical simulations and analytical models, we demonstrate a resonant gain leading to enhanced absorption in 2D graphene ribbons.