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Refractive index database


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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)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=0.33973+\frac{0.69913λ^2}{λ^2-0.09374^2}+\frac{0.11994λ^2}{λ^2-21.18^2}+\frac{4.35181λ^2}{λ^2-38.46^2}$$

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

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

Calcium fluoride, CaF2

Other names

  • Calcium difluoride
  • Calcium(II) fluoride

Mineral

  • Fluorite (fluorspar)

External links