Terahertz-wave generation using graphene: Toward new types of terahertz lasers

Taiichi Otsuji, Stephane Boubanga Tombet, Akira Satou, Maxim Ryzhii, Victor Ryzhii

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper reviews recent advances in terahertz-wave generation in graphene toward the creation of new types of terahertz lasers. First, fundamental basis of the optoelectronic properties of graphene is introduced. Second, nonequilibrium carrier relaxation and recombination dynamics in optically or electrically pumped graphene are described to introduce a possibility of negative dynamic conductivity in a wide terahertz range. Third, recent theoretical advances toward the creation of current-injection graphene terahertz lasers are described. Fourth, unique terahertz dynamics of the 2-D plasmons in graphene are described. Finally, the advantages of graphene materials and devices for terahertz-wave generation are summarized.

Original languageEnglish
JournalProceedings of the IEEE
Publication statusAccepted/In press - 2020


  • Carrier–phonon interaction
  • current injection
  • gain
  • Graphene
  • graphene
  • laser
  • Laser theory
  • Optical pumping
  • Photonics
  • population inversion
  • Pump lasers
  • terahertz
  • Ultrafast optics


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