# 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: |
    H. H. Li.
    Refractive index of alkaline earth halides and its wavelength and temperature derivatives.
    <a href="https://doi.org/10.1063/1.555616"><i>J. Phys. Chem. Ref. Data</i> <b>9</b>, 161-289 (1980)</a> and references therein.<br>
    * Sellmeier formula is derived by critical analysis of experimental data from several sources.
COMMENTS: |
    293 K (20 °C). Extraordinary ray (e).
CONDITIONS:
    direction: e
DATA:
  - type: formula 1
    wavelength_range: 0.14 7.5
    coefficients: 0.25385 0.66405 0.08504 1.0899 22.2 0.1816 24.4 2.1227 40.6