Emission of terahertz radiation from SiC
نویسندگان
چکیده
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 zzz 2 / zxx 2 and the complex index of refraction of silicon carbide at terahertz frequencies. © 2009 American Institute of Physics. DOI: 10.1063/1.3194152
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