Work

Negative dynamic conductivity of graphene with optical pumping

Year: 2007

Type: article

Abstract: 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.

Source: Journal of Applied Physics

DOI: 10.1063/1.2717566

Authors: V. Ryzhii, M. Ryzhii, T. Otsuji

Institutions: University of Aizu, Research Institute of Electrical Communication, Tohoku University

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

OpenAlex ID: W2079080268

FWCI: 9.81

Cites: 18

Cited by: 373

Related to: 10