Optical applications of copper doped lithium phosphate glasses

Lithium optical phosphate glass materials were prepared by melt-quenching method by using a special composition 65 P2O5 -10 Pb3O4 - 5 ZnO - (20-x) Li(2)CO3 - x CuO (x = 0, 0.2, 0.4, 0.6, 0.8,1.0).The amorphous nature of prepared glasses is confirmed through X-ray diffraction (XRD) spectra. The increase in densities and decrease in refractive index values with the enhancement of the quantity of Cu2+ ions are observed in these glasses. Morphological study of these glass samples revealed their biomedical applications. Spin-Hamiltonian parameters are evaluated by using Electron paramagnetic resonance (EPR) spectra and the observed positions of Cu2+ ions are characteristic of tetragonally elongated octahedral sites. Breaking of P-O-P bonds and creating P-O-Cu bonds are noticed in Fourier transform infrared (FTIR) spectra. The optical band gap energy values were decreasing from 2.91 -2.89eVas the copper ion content is increased,support the applications of thin films and the transmission spectra reveal the optical applications such as bandpass filter.