Preparation Effects on the UV Optical Properties of GeO2 Glasses

摘要

The fusion temperature (T sub phi), the oxygen partial pressure during melting, and the quenching rate from T sub phi all influence the optical absorption in the 5.06-eV (245-nm) region. These observations are consistent with the assumption that the defect responsible for the optical absorption is an oxygen vacancy or complex of vacancies. The activation energy for the formation of the defect in GeO2 glasses which is responsible for the optical absorption is 2.3 eV which is larger than the activation energy for oxygen diffusion (approx. 1 eV).