# 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, K. Miyata, V. Petrov.
    Phase-matching properties of BaGa<sub>4</sub>Se<sub>7</sub> for SHG and SFG in the 0.901–10.5910 μm range.
    <a href="https://doi.org/10.1364/AO.56.002978"><i>Appl. Opt.</i>, <b>56</b>, 2978–2981 (2017)</a>
COMMENTS: |
    n<sub>α</sub>; room temperature.
CONDITIONS:
    direction: alpha
DATA:
  - type: formula 4
    wavelength_range: 0.901 10.591
    coefficients: 6.72431 0.26375 0 0.04248 1 602.97 0 749.87 1