OPTICAL PROPERTIES OF Er3+/ Nd3+ CO-DOPED MAGNESIUM PHOSPHATE GLASS

Abstract

Series of glass based on (P₂O₅)_0.5-(MgO)_0.5-x-(Er₂O₃ / Nd₂O₃)_x have been successfully prepared by melt quenching technique. Their amorphousity is confirmed using the X ray diffraction technique. The optical properties of the glass have been measured using Infrared and UV-Visible spectroscopy. It was found that the vibrational frequency is observed to be around 3420-3560, 1312-1319, 1060-1083, 933-938, 764-769, and 471 474 cm-1 which is predominately due to the OH- band, P=O, P-O-P, P-O- stretching vibrations respectively. The absorption cut-off wavelength is in the range of (318 nm – 322 nm) and is very much depend on the MgO contents.