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REFERENCES: |
    Cited as "R. L. Herbst (private communication)" in M. M. Choy and R. L. Byer.
    Accurate second-order susceptibility measurements of visible and infrared nonlinear crystals.
    <a href="https://doi.org/10.1103/PhysRevB.14.1693"><i>Phys. Rev. B</i> <b>14</b>, 1693-1706 (1976)</a>.
COMMENTS: |
    Room temperature. Extraordinary ray (e).
CONDITIONS:
    direction: e
DATA:
  - type: formula 2
    wavelength_range: 0.5461 5
    coefficients: 0.83086 1.08807 0.0313810 0.554582 158.76