Negative dynamic conductivity of graphene with optical pumping

V. Ryzhii, M. Ryzhii, T. Otsuji

研究成果: Article査読

301 被引用数 (Scopus)

抄録

We study the dynamic ac conductivity of a nonequilibrium two-dimensional electron-hole system in optically pumped graphene. Considering the contribution of both interband and intraband transitions, we demonstrate that at sufficiently strong pumping the population inversion in graphene can lead to the negative net ac conductivity in the terahertz range of frequencies. This effect might be used in graphene-based coherent sources of terahertz radiation.

本文言語English
論文番号083114
ジャーナルJournal of Applied Physics
101
8
DOI
出版ステータスPublished - 2007

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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