DocumentCode
3060709
Title
Ultrafast refractive index control of terahertz graphene metamaterials
Author
Seung Hoon Lee ; Jeongmook Choi ; Hyeon-Don Kim ; Hyunyong Choi ; Bumki Min
Author_Institution
Dept. of Mech. Eng., KAIST, Daejeon, South Korea
fYear
2013
fDate
June 30 2013-July 4 2013
Firstpage
1
Lastpage
2
Abstract
We present an ultrafast dynamics of THz graphene-metamaterial hybrid devices, where the refractive index and the conductivity are largely modulated by electrical and optical methods. Unprecedentedly large modulation of refractive index and the pump-induced effective negative conductivity are investigated by an ultrafast time-resolved optical-pump THz-probe spectroscopy with varying gate voltage.
Keywords
electrical conductivity; electro-optical modulation; graphene; high-speed optical techniques; optical metamaterials; refractive index; time resolved spectroscopy; C; THz graphene-metamaterial hybrid devices; conductivity; pump-induced effective negative conductivity; refractive index modulation; terahertz graphene metamaterials; ultrafast refractive index control; ultrafast time-resolved optical-pump THz-probe spectroscopy; Graphene; Metamaterials; Optical pumping; Optical refraction; Optical sensors; Optical variables control; Refractive index;
fLanguage
English
Publisher
ieee
Conference_Titel
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location
Kyoto
Type
conf
DOI
10.1109/CLEOPR.2013.6600283
Filename
6600283
Link To Document