Stimulated terahertz emission from optically pumped graphene

Author

Tombet, S. Boubanga ; Satou, A. ; Otsuji, T. ; Ryzhii, V.

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

1

Abstract

We conduct time domain spectroscopy studies and shows that graphene sheet amplifies an incoming terahertz field. The graphene emission spectra dependency on laser pumping intensity shows a threshold like behavior, testifying the occurrence of the negative conductivity and the population inversion in the terahertz range, paving the way for a new class room temperature graphene based terahertz lasers.

Keywords

graphene; optical pumping; population inversion; solid lasers; stimulated emission; time-domain analysis; C; graphene based terahertz lasers; graphene emission spectra dependency; graphene sheet; incoming terahertz field; laser pumping intensity; negative conductivity; optically pumped graphene; population inversion; stimulated terahertz emission; temperature 293 K to 298 K; terahertz range; threshold like behavior; time domain spectroscopy; Conductivity; Crystals; Integrated optics; Nonlinear optics; Optical pulses; Optical pumping; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6105193

Filename

6105193