# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: "M. P. Fischer, J. Bühler, G. Fitzky, T. Kurihara, S. Eggert, A. Leitenstorfer, D. Brida. Coherent field transients below 15 THz from phase-matched difference frequency generation in 4H-SiC, <a href=\"https://doi.org/10.1364/OL.42.002687\"><i>Opt. Lett.</i> <b>42</b>, 2687-2690 (2017)</a>"
COMMENTS: "4H-SiC (hexagonal crystal structure); Extraordinary ray (e); Room temperature."
DATA:
  - type: formula 2
    wavelength_range: 17 150
    coefficients: 6.346 3.026 175.2
SPECS:
    temperature: 20 °C
