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For a typical sample of Al30Ga70In50P50 the refractive index and extinction coefficient at 632.8 nm are 3.33076 and 0.1593861. 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 - Filmetrics Composite
No guarantee of accuracy - use at your own risk.
Proprietary encrypted file for use with Filmetrics Systems: