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Sub-THz Characterisation of Monolayer Graphene

Authors :
Ehsan Dadrasnia
Sujitha Puthukodan
Vinod V. K. Thalakkatukalathil
Horacio Lamela
Guillaume Ducournau
Jean-Francois Lampin
Frédéric Garet
Jean-Louis Coutaz
Source :
Journal of Spectroscopy, Vol 2014 (2014)
Publication Year :
2014
Publisher :
Hindawi Limited, 2014.

Abstract

We explore the optical and electrical characteristics of monolayer graphene by using pulsed optoelectronic terahertz time-domain spectroscopy in the frequency range of 325–500 GHz based on fast direct measurements of phase and amplitude. We also show that these parameters can, however, be measured with higher resolution using a free space continuous wave measurement technique associated with a vector network analyzer that offers a good dynamic range. All the scattering parameters (both magnitude and phase) are measured simultaneously. The Nicholson-Ross-Weir method is implemented to extract the monolayer graphene parameters at the aforementioned frequency range.

Subjects

Subjects :
Optics. Light
QC350-467

Details

Language :
English
ISSN :
23144920 and 23144939
Volume :
2014
Database :
Directory of Open Access Journals
Journal :
Journal of Spectroscopy
Publication Type :
Academic Journal
Accession number :
edsdoj.0005b126e4ba490f823f44651029d312
Document Type :
article
Full Text :
https://doi.org/10.1155/2014/601059