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Measurement of the optical absorption spectra of epitaxial graphene from terahertz to visible
 

Summary: Measurement of the optical absorption spectra of epitaxial graphene
from terahertz to visible
Jahan M. Dawlaty,1,a
Shriram Shivaraman,1
Jared Strait,1
Paul George,1
Mvs Chandrashekhar,1
Farhan Rana,1
Michael G. Spencer,1
Dmitry Veksler,2
and
Yunqing Chen2
1
School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA
2
Center for Terahertz Research, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
Received 13 August 2008; accepted 8 September 2008; published online 30 September 2008
We present experimental results on the optical absorption spectra of epitaxial graphene from the
visible to the terahertz frequency range. In the terahertz range, the absorption is dominated by
intraband processes with a frequency dependence similar to the Drude model. In the near-IR range,

  

Source: Afshari, Ehsan - School of Electrical and Computer Engineering, Cornell University

 

Collections: Engineering