Refractive Index of InP, Indium Phosphide

Indium phosphide (InP) is a binary semiconductor composed of indium and phosphorus. InP is used in high-power and high-frequency electronics.

For a typical sample of InP the refractive index and extinction coefficient at 632.8 nm are 3.536 and 0.308. 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".

  • Tab-delimited data file for unrestricted use
Wavelength (nm)

Refractive Index Reference - Sopra Material Database

No guarantee of accuracy - use at your own risk.