Emission of Terahertz Radiation from SiC

Abstract

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 ratio is better than one thousand. We determine that the terahertz radiation is generated via second order optical nonlinearity (optical rectification). We present a measurement of the ratio of nonlinear susceptibility tensor elements ${\chi }_{zzz}^{(2)}/{\chi }_{zxx}^{(2)}$ and the complex index of refraction of silicon carbide at THz frequencies.

4 pages, 5 figures

References in corpus (2)

• Second-harmonic generation and linear electro-optical coefficients of SiC polytypes and nanotubes
• Second harmonic generation in SiC polytypes

Cited by in corpus (3)

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• Room temperature broadband coherent terahertz emission induced by dynamical photon drag in graphene
• Chiral Polaron Formation in Graphene