# 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: |
    K. Kato, V. V. Badikov, K. Miyata, V. Petrov.
    Refined Sellmeier equations for BaGa<sub>4</sub>S<sub>7</sub>.
    <a href="https://doi.org/10.1364/AO.430424"><i>Appl. Opt.</i>, <b>60</b>, 6600–6603 (2021)</a>
COMMENTS: |
    n<sub>β</sub>; room temperature.
CONDITIONS:
    direction: beta
DATA:
  - type: formula 4
    wavelength_range: 0.633 8.82
    coefficients: 6.86357 0.16688 0 0.03156 1 1146.08 0 665.85 1