Optical constants of CsBr (Cesium bromide)
Li 1976: n 0.21–55 µm; 20 °C
Wavelength:
µm
(0.21–55)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=0.14600+\frac{1.26628λ^2}{λ^2-0.120^2}+\frac{0.01137λ^2}{λ^2-0.146^2}+\frac{0.00975λ^2}{λ^2-0.160^2}+\frac{0.00672λ^2}{λ^2-0.173^2}+\frac{0.34557λ^2}{λ^2-0.187^2}+\frac{3.76339λ^2}{λ^2-136.05^2}$$Comments
297 K (24 °C).
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.