RefractiveIndex.INFO Refractive index database




Optical constants of Al2O3 (Aluminium sesquioxide, Sapphire)
Malitson and Dodge 1972: Synthetic sapphire; n(e) 0.20-5.0 µm

Wavelength: µm
 (0.2 – 5)  

Other optical constants

logX   logY   eV

Dispersion formula [ i ]



Synthetic sapphire, Extraordinary ray (e), 20 °C


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


1) I. H. Malitson and M. J. Dodge. Refractive Index and Birefringence of Synthetic Sapphire, J. Opt. Soc. Am. 62, 1405 (1972)
2) M. J. Dodge, "Refractive Index" in Handbook of Laser Science and Technology, Volume IV, Optical Materials: Part 2, CRC Press, Boca Raton, 1986, p. 30
* Ref. 1 is a talk abstract in a conference program; Ref. 2 provides Sellmeier equation

More info - wiki

Aluminium sesquioxide, Al2O3

Other names

Alumina, Aluminium oxide, Aloxite, Aluminium oxide (α), Aluminium(III) oxide, Dialuminium trioxide.

Mineral name: Corundum.

Gemstones: Sapphire, Ruby.

External links