Terahertz emission from ZnGeP_2: phase-matching, intensity, and length scalability

  title={Terahertz emission from ZnGeP\_2: phase-matching, intensity, and length scalability},
  author={Joseph D. Rowley and Derek A. Bas and Kevin T. Zawilski and Peter G. Schunemann and A. D. Bristow},
  journal={Journal of The Optical Society of America B-optical Physics},
  • J. Rowley, D. Bas, A. Bristow
  • Published 3 June 2013
  • Physics
  • Journal of The Optical Society of America B-optical Physics
Collinear phase-matched optical rectification is studied in ZnGeP2 pumped with near-infrared light. The pump-intensity dependence is presented for three crystal lengths (0.3, 1.0, and 3.0 mm) to determine the effects of linear optical absorption, nonlinear optical absorption, and terahertz free-carrier absorption on the generation. Critical parameters such as the coherence length (for velocity matching), dispersion length (for linear pulse broadening), and nonlinear length (for self-phase… 

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