Graphene terahertz lasers: Injection versus optical pumping

Taiichi Otsuji, Akira Satou, Maxim Ryzhii, Vladimir Mitin, Victor Ryzhii

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this paper we demonstrate that graphene is one of the best materials for new types of terahertz lasers as optical and/or injection pumping of graphene can exhibit negative-dynamic conductivity in the terahertz spectral range. We analyze the formation of nonequilibrium states in optically pumped graphene layers and in forward-biased graphene structures with lateral p-i-n junctions and consider the conditions of population inversion and lasing. The latter provides a significant advantage of the injection pumping in realization of graphene terahertz lasers. We benchmark graphene as a prospective material for injection-type terahertz lasers.

Original languageEnglish
Title of host publicationCarbon Nanomaterials
PublisherMaterials Research Society
Number of pages12
ISBN (Print)9781632660985
Publication statusPublished - 2013
Event2012 MRS Fall Meeting - Boston, MA, United States
Duration: 2012 Nov 252012 Nov 30

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2012 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Graphene terahertz lasers: Injection versus optical pumping'. Together they form a unique fingerprint.

Cite this