Optical constants of CRYSTALS
Sapphire (Al2O3)
Wavelength:
µm
(0.2 – 5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.4313493λ^2}{λ^2-0.0726631^2}+\frac{0.65054713λ^2}{λ^2-0.1193242^2}+\frac{5.3414021λ^2}{λ^2-18.028251^2}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20 ℃ direction: o
Comments
Synthetic sapphire, Ordinary ray (o), 20 ℃
References
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 a dispersion formula
Data
INFO
Aluminium sesquioxide, Al2O3
Other names
- Alumina
- Aluminium oxide
- Aloxite
- Aluminium oxide (α)
- Aluminium(III) oxide
- Dialuminium trioxide
Mineral
- Corundum
Gemstones
- Sapphire
- Ruby
External links
- Aluminium oxide - Wikipedia
- Aluminium oxide (α) - WebElements
- Corundum - Wikipedia
- Sapphire - Wikipedia
- Ruby - Wikipedia