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Emission of Terahertz Radiation from SiC
Jared H. Strait, Paul A. George, Jahan Dawlaty +4
We report the emission of strong coherent broadband terahertz radiation from 6H-Silicon-Carbide (SiC) excited with optical pulses. The measured terahertz spectral signal-to-noise r…
Thickness Estimation of Epitaxial Graphene on SiC using Attenuation of Substrate Raman Intensity
Shriram Shivaraman, M. V. S. Chandrashekhar, John J. Boeckl +1
A simple, non-invasive method using Raman spectroscopy for the estimation of the thickness of graphene layers grown epitaxially on silicon carbide (SiC) is presented, enabling simu…
Measurement of the Optical Absorption Spectra of Epitaxial Graphene from Terahertz to Visible
Jahan M. Dawlaty, Shriram Shivaraman, Jared Strait +6
We present experimental results on the optical absorption spectra of epitaxial graphene from the visible to the terahertz (THz) frequency range. In the THz range, the absorption is…
Measurement of Ultrafast Carrier Dynamics in Epitaxial Graphene
Jahan M. Dawlaty, Shriram Shivaraman, Mvs Chandrashekhar +2
Using ultrafast optical pump-probe spectroscopy, we have measured carrier relaxation times in epitaxial graphene layers grown on SiC wafers. We find two distinct time scales associ…