Creating a terahertz wave source through nonlinear difference frequency generation in ferroelectric crystals

@article{Webb2011CreatingAT,
  title={Creating a terahertz wave source through nonlinear difference frequency generation in ferroelectric crystals},
  author={Jeffrey Frank Webb and M. K. Haldar},
  journal={Asia-Pacific Microwave Conference 2011},
  year={2011},
  pages={1842-1845}
}
This paper proposes that terahertz waves may be generated from higher frequency sources by exploiting the difference-frequency nonlinear effect in ferroelectric crystals. The nonlinear response of ferroelectric crystals together with the fact that they are resonant in the terahertz region is the main reason for proposing their use. 

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