Optical constants of CaF2 (Calcium fluoride)
Li 1980: n 0.15–12.0 µm; 20 °C
Wavelength:
µm
(0.15–12)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=0.33973+\frac{0.69913λ^2}{λ^2-0.09374^2}+\frac{0.11994λ^2}{λ^2-21.18^2}+\frac{4.35181λ^2}{λ^2-38.46^2}$$Comments
293 K (20 °C).
References
H. H. Li. Refractive index of alkaline earth halides and its wavelength and temperature derivatives. J. Phys. Chem. Ref. Data 9, 161-289 (1980) and references therein.
* Sellmeier formula is derived by critical analysis of experimental data from several sources.
Data
INFO
Calcium fluoride, CaF2
Other names
- Calcium difluoride
- Calcium(II) fluoride
Mineral
- Fluorite (fluorspar)