Effect of Cu ions on the Optical Properties of Glassy Filter System

Copper doped phosphate glass has been prepared by conventional melt
quenching technique. The composition of the prepared system is 42
P2O5- 39ZnO- 4CaO- (15-x) Na2O- xCuO, where (x= 2, 4, 6, 8 and 10 mol %).
The amorphous nature of the glassy system have been checked by X-ray
diffraction (XRD). The density ρ has been measured by Archimedes method,
using a toluene as the immersing liqued . The molar volume (Mv) has been
calculated. It is observed that, the density of the prepared glasses increases by
increasing copper oxide content and the molar volume Mv exhibit the same
trend. The optical absorption spectra were measured in visible and near IR
spectral regions. The data reveal that, such system exhibits band pass filtering
effect. The hight and weidth of absorption band were found to be copper
concentration dependent.