Thermal, structural and spectroscopic properties of Pr³⁺-doped lead zinc borate glasses modified by alkali metal ions

Abstract

This paper offers a study on Pr 3+ -doped alkali and mixed-alkali borate glasses prepared by the melt quenching technique and characterized by thermal, structural and spectroscopic studies. The amorphous nature of the glassy systems was identified based on X-ray diffraction. The thermal behaviour of glasses was studied using differential thermal analysis (DTA). The functional groups contained in the glasses were identified by Fourier transform infrared spectroscopy (FTIR). Spectral intensities were evaluated from the absorption spectra and used for calculating J-O intensity parameters, Ω λ (λ = 2, 4 and 6). Further, these parameters were used for calculating different radiative properties. The best radiative state was identified as the laser transition state among the various states. Emission analysis was performed for this state by calculating the branching ratios and stimulated emission cross sections (σ p ) for all the prepared glasses. These studies suggest that borate glasses are useful for visible fluorescence.

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

“…However, the decrease of rigidity could be considered to contribute to significant ductility for fiber drawing applications. The glasses doped with trivalent praseodymium follow the trend Ω 4 > Ω 6 > Ω 2 , as reported in the literature [55,62,63].…”

Erbium-Ion-Doped Bismuth Borate Glasses for High Optical Gain NIR Fiber Laser Applications

“…36 The asymmetric stretching of the B-O linkage in BO 4 units made from boroxol rings was attributed to a sharp band at 1226 cm −1 . 37,38 B-O-H bonding is the cause of the 1967 cm −1 . In general, water molecules and OHbonds are attributed to three bands that are greater than 2028 −3000 cm −1 .…”