# this file is part of refractiveindex.info database
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REFERENCES: |
    N. Uchida.
    Optical properties of single-crystal paratellurite (TeO<sub>2</sub>).
    <a href="https://doi.org/10.1103/PhysRevB.4.3736"><i>Phys. Rev.B</i> <b>4</b>, 3736-3745 (1971)</a>
COMMENTS: |
    Extraordinary ray (e)
CONDITIONS:
    direction: e
DATA:
  - type: formula 1
    wavelength_range: 0.4 1.0
    coefficients: 0 2.823 0.1342 1.542 0.2631