## Optical constants of KCl (Potassium chloride)

Li 1976: n 0.18–35 µm

Wavelength:
µm

(0.18–35)

### Complex refractive index (*n+ik)*

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=0.26486+\frac{0.30523λ^2}{λ^2-0.100^2}+\frac{0.41620λ^2}{λ^2-0.131^2}+\frac{0.18870λ^2}{λ^2-0.162^2}+\frac{2.6200λ^2}{λ^2-70.42^2}$$### 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.