Structural and optical properties of barium titanium borate glasses doped with ytterbium

Abstract

Barium titanium borate glasses doped with ytterbium ions were fabricated via standard melt quenching technique. The building structure of the glass matrices doped with ascendant ratios of ytterbium ions were studied using Raman and FTIR spectroscopies. The UV–Vis–NIR optical absorption spectra were investigated and used to calculate optical bandgaps, Urbach energies, refractive indices, metallization criterion, optical basicity, and dispersion parameters. The absorption and emission cross-sections and gain spectra for 2F5/2 → 2F7/2 transition of ytterbium ions were investigated. The high values of the emission cross-sections of the studied glasses make them strong candidates for laser and amplifier applications.

Physical, optical, thermal, structural and mechanical properties of alkaline earth borate glasses

“…The properties of borate glasses make it a good candidate for several applications such as optical communication, optoelectronics, radiation shielding, dosimeters and electrochemical devices [7][8][9]. The addition of alkaline earth oxides such as CaO, SrO and BaO, changes the glass structure and the relative intensities of BO 4 /BO 3 units, hence changing glass properties [10][11][12][13][14]. It is known that modifying borate network with alkaline earth ions helps increasing the mechanical, thermal stability and radiation shielding properties of borate glasses [15].…”