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REFERENCES: |
    1) G. D. Boyd, H. Kasper, J. H McFee.
    Linear and nonlinear optical properties of AgGaS<sub>2</sub>, CuGaS<sub>2</sub>, and CuInS<sub>2</sub>, and theory of the wedge technique for the measurement of nonlinear coefficients.
    <a href="https://doi.org/10.1109/JQE.1971.1076588"><i>IEEE J. Quantum Electron.</i>, <b>7</b>, 563-573  (1971)</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 (e)
CONDITIONS:
    direction: o
DATA:
  - type: formula 2
    wavelength_range: 0.49 12
    coefficients: 2.6280 2.1686 0.1003 2.1753 950