31 October 2017 2 127 Report

It is known that silica (SiO2) becomes photosensitive when it is co-doped with GeO2 or P2O5. How the photo-sensitivity depends on the concentration of P2O5 or GeO2 ? If I keep the exposed time of UV radiation same in both cases how much refractive index change I can expect ? Please share with me if you have any relevant articles.

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