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Terahertz-wave generation using graphene

Published online by Cambridge University Press:  15 June 2012

Taiichi Otsuji
Affiliation:
RIEC, Tohoku University, Sendai, 980-8577, Japan JST-CREST, Tokyo, 102-0075, Japan
Stephane Boubanga Tombet
Affiliation:
RIEC, Tohoku University, Sendai, 980-8577, Japan
Akira Satou
Affiliation:
RIEC, Tohoku University, Sendai, 980-8577, Japan JST-CREST, Tokyo, 102-0075, Japan
Maxim Ryzhii
Affiliation:
CNEL, University of Aizu, Aizu Wakamatsu, 965-8580, Japan JST-CREST, Tokyo, 102-0075, Japan
Victor Ryzhii
Affiliation:
CNEL, University of Aizu, Aizu Wakamatsu, 965-8580, Japan JST-CREST, Tokyo, 102-0075, Japan
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Abstract

In this paper recent advances in terahertz-wave generation in graphene are reviewed. First, fundamental basis of the optoelectronic properties of graphene is introduced. Second, nonequilibrium carrier relaxation and recombination dynamics in optically or electrically pumped graphene is 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 two-dimensional plasmons in graphene are described. Finally, the advantages of graphene materials and devices for terahertz-wave generation are summarized.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

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