Terahertz-induced cascaded interactions between spectra offset by large frequencies.

  title={Terahertz-induced cascaded interactions between spectra offset by large frequencies.},
  author={Koustuban Ravi. and Franz X. K{\"a}rtner},
  journal={Optics express},
  volume={27 14},
We explore the dynamics of a system where input spectra in the optical domain with very disparate center frequencies are strongly coupled via highly phase-matched, cascaded second-order nonlinear processes driven by terahertz radiation. The only requirement is that one of the input spectra contain sufficient bandwidth to generate the phase-matched terahertz-frequency driver. The frequency separation between the input spectra (or pump and seed spectra) can be more than ten times larger than the… 
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