Structural and luminescence properties in Dy³+ Doped antimony- Strontium-Magnesium-Oxyfluroborate glasses

A series of glasses by melting quenching method fabricated for spectroscopic investigations of Dysprosium (Dy³⁺) particle ions deposited on Antimony (Sb) - Magnesium (Mg) - Strontium (Sr) Oxyfluoroborate (BSbMgfSr) glasses. The structural and optical characterizations such as XRD, UV-VIS-NIR absorption spectroscopy, photoluminescence (PL) (excitation and emission) were accomplished to study the properties of prepared glasses. The transitions from lowest energy state to an excited state in RE³+ ions were identified using optical UV-NIR absorption spectra. By the use of Judd-Ofelt theory the J-O intensity parameters Ω_λ (λ = 2, 4, 6) have been evaluated utilizing the absorption spectra with the determination of experimental (f_exp) and calculated (f_cal) oscillator strengths. The emission of light from glass system was concluded through PL spectra (Excitation and emission) for Dy³+ion. The radiative properties resembling radiative transition probability (AR), radiative-lifetime (τR), and branching-ratio (β) of the glasses have also estimated. Stimulated emission cross-section (σ_se) of the glasses also calculated for the feasibility of lasing applications. Experimental lifetime (τ_exp) of the decay curves of the BSbMgfSrD glasses were also calculated upon excitation by suitable wavelengths of all various concentrations of the RE³+ ions.