# this file is part of refractiveindex.info database
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REFERENCES: |
    K. Kato and N. Umemura.
    Sellmeier equations for GaS and GaSe and their applications to the nonlinear optics in GaS<sub>x</sub>Se<sub>1−x</sub>.
    <a href="https://doi.org/10.1364/OL.36.000746"><i>Opt. Lett.</i> <b>36</b>, 746-747 (2011)</a>
COMMENTS: |
    Room temperature. Ordinary ray (o).
CONDITIONS:
    direction: o
DATA:
  - type: formula 4
    wavelength_range: 0.633 10.591
    coefficients: 7.12996 0.26073 0 0.04627 1 127.335 0 258.431 1