DocumentCode
690071
Title
Ultrafast refractive index control of gate-controlled graphene-metamaterial hybrid devices
Author
Jeongmook Choi ; Seung Hoon Lee ; Hyeon-Don Kim ; Bumki Min ; Hyunyong Choi
Author_Institution
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
fYear
2013
fDate
9-14 June 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 negative conductivity are investigated by an ultrafast time-resolved optical-pump THz-probe spectroscopy with varying gate voltage.
Keywords
graphene; high-speed optical techniques; optical conductivity; optical control; optical metamaterials; optical pumping; refractive index; terahertz metamaterials; time resolved spectra; time resolved spectroscopy; C; conductivity; gate-controlled graphene-metamaterial hybrid devices; refractive index; ultrafast dynamics; ultrafast refractive index control; ultrafast time-resolved optical-pump THz-probe spectroscopy; Graphene; Metamaterials; Optical pumping; Optical refraction; Optical variables control; Refractive index; Ultrafast optics;
fLanguage
English
Publisher
ieee
Conference_Titel
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location
San Jose, CA
Type
conf
Filename
6834463
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