Optical properties ofGeO2

Abstract
Interpretations for the energies corresponding to the peaks in the reflectivity and the imaginary part (ε2) of the complex dielectric constant (ε=ε1+iε2) have been sought successfully using Penn-like model calculations. The valence-band–d-band coupling present in Ge may contribute to the effective number of electrons in GeO2 at the observed peaks at high energies.