Absorption of THz electromagnetic wave in two mono-layers of graphene

Cole B. Reynolds, M. Shoufie Ukhtary, Riichiro Saito

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Nearly 100% absorption of an electromagnetic (EM) wave in terahertz (THz) frequency is proposed for a system consisting of two mono-layers of graphene. Here, we demonstrate that the system can almost perfectly absorb an EM wave with frequency of 2 THz, even though we have a low electron mobility of roughly 1000 cm2 Vs-1. The absorption probability is calculated by using the transfer matrix method. We show that the two mono-layers of the graphene system is needed to obtain nearly 100% absorption when the graphene has a relatively low Fermi energy. The absorption dependence on the distance between the graphene layers is also discussed.

Original languageEnglish
Article number195306
JournalJournal of Physics D: Applied Physics
Issue number19
Publication statusPublished - 2016 Apr 14


  • electromagnetic wave
  • graphene
  • optical absorption

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films


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