Luminescence behavior of Nd³⁺ions doped ZnO-BaO-(Gd<inf>2</inf>O<inf>3</inf>/GdF<inf>3</inf>)- P<inf>2</inf>O<inf>5</inf> glasses for laser material applications

Abstract

In current study Neodymium doped phosphate glasses were prepared and subsequently the Physical and luminescence properties of these glasses were thoroughly analyzed. In total, eleven absorption bands centered at 352, 431, 474, 512, 526, 583, 626, 683, 746, 803 and 875 nm were observed in absorption spectra. Similarly, the emission spectra of the prepared glasses recorded with 804 nm excitation show three radiative transitions peaks at 873, 1054 and 1333 nm. The luminescence properties of present glasses analyzed theoretically as several radiative properties studied through Judd-Ofelt theory. The emission cross section for 4F3/2→4I11/2 transition of Nd3+ ions, measured to be 11.2 × 10−20 cm2 in the case of oxide and 13.10 × 10−20 cm2 in the case of oxyfluoride glass. Similarly, the calculated and measured branching ratio for oxide glass are 54% and 51% respectively, and for oxyfluoride glass the calculated and measured branching ratios are 53% and 55% respectively. From the FTIR spectra it is noted that the bands correspond to the OH group show low transmittance intensity in oxyfluoride glass than oxide glass which is an evident of low OH contents oxyfluoride glass. In conclusion, from the results of present study reveal that the oxyfluoride glasses reported in present work can be a possible material for laser applications.