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REFERENCES: |
    1) W. L. Bond, G. D. Boyd and H. L. Carter Jr..
    Refractive indices of HgS (Cinnabar) between 0.62 and 11 μ.
    <a href="https://doi.org/10.1063/1.1709079"><i>J. Appl. Phys.</i>, <b>38</b>, 4090-4091 (1967)</a><br>
    2) G. C. Bhar.
    Refractive index interpolation in phase-matching.
    <a href="https://doi.org/10.1364/AO.15.0305_1"><i>Appl. Opt.</i> <b>15</b>, 305-307 (1976)</a><br>
    * Ref. 2 provides a dispersion formula based on data from Ref. 1
COMMENTS: |
    Ordinary ray (o).
CONDITIONS:
    direction: o
DATA:
  - type: formula 2
    wavelength_range: 0.62 11.0
    coefficients: 3.1506 2.7896 0.1328 1.1378 705