Optical constants of NaBr (Sodium bromide)
Li 1976: n 0.21–34 µm
Wavelength:
µm
(0.21–34)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=0.06728+\frac{1.10463λ^2}{λ^2-0.125^2}+\frac{0.18816λ^2}{λ^2-0.145^2}+\frac{0.00243λ^2}{λ^2-0.176^2}+\frac{0.24454λ^2}{λ^2-0.188^2}+\frac{3.7960λ^2}{λ^2-74.63^2}$$Comments
297 K (24 ℃).
References
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 is derived by critical analysis of experimental data from several sources.