Coherent field transients below 15  THz from phase-matched difference frequency generation in 4H-SiC

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Optics Letters ; 42 (2017), 14. - pp. 2687-2690. - ISSN 0146-9592. - eISSN 1539-4794
Abstract
We experimentally demonstrate tunable, phase-matched difference frequency generation covering the spectral region below 15 THz using 4H-SiC as a nonlinear crystal. This material combines a non-centrosymmetric lattice and strong birefringence with broadband transparency at low optical frequencies. Thorough refractive index measurements in the terahertz spectral range allow us to calculate phase-matching conditions for any near-infrared pump laser source. 4H-SiC is also exploited as a detector crystal for electro-optic sampling. The results allow us to estimate the effective second-order nonlinear coefficient.
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ISO 690FISCHER, Marco P., Johannes BÜHLER, Gabriel FITZKY, Takayuki KURIHARA, Stefan EGGERT, Alfred LEITENSTORFER, Daniele BRIDA, 2017. Coherent field transients below 15  THz from phase-matched difference frequency generation in 4H-SiC. In: Optics Letters. 42(14), pp. 2687-2690. ISSN 0146-9592. eISSN 1539-4794. Available under: doi: 10.1364/OL.42.002687
BibTex
@article{Fischer2017-07-15Coher-40336,
  year={2017},
  doi={10.1364/OL.42.002687},
  title={Coherent field transients below 15  THz from phase-matched difference frequency generation in 4H-SiC},
  number={14},
  volume={42},
  issn={0146-9592},
  journal={Optics Letters},
  pages={2687--2690},
  author={Fischer, Marco P. and Bühler, Johannes and Fitzky, Gabriel and Kurihara, Takayuki and Eggert, Stefan and Leitenstorfer, Alfred and Brida, Daniele}
}
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