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Aluminium or aluminum is a silvery white member of the boron group of chemical elements. It has the symbol Al and its atomic number is 13.
For a typical sample of Al the refractive index and extinction coefficient at 632.8 nm are 1.37289 and 7.617691. Below are files of complete refractive index and extinction coefficients. If the file is not available for download, you can request our proprietary file by clicking "Request".
Refractive Index Reference - Sopra Material Database
No guarantee of accuracy - use at your own risk.
Tab-delimited data file for unrestricted use: