Optical constants of NaI (Sodium iodide)
Li 1976: n 0.25-40 µm
Complex refractive index (n+ik)
Derived optical constants
Conditions & Spec sheet
temperature: 297 K
297 K (23.85 °C).
H. H. Li. Refractive index of alkali halides and its wavelength and temperature derivatives. J. Phys. Chem. Ref. Data 5, 329-528 (1976) and references therein.
* Sellmeier formula derivation is based on a single data point and knowledge of the dielectric constants and the characteristic absorption peaks.