Samarium doped calcium sulfate ultra-phosphate glasses: Structural, physical and luminescence investigations

Tailored spectroscopic characteristics of a new type of CuO nanoparticles-inserted borate glass system: Samarium concentration tuning effect

“…The JO intensity parameters obtained from the evaluated oscillator strengths are presented in Table 6 . Except for the copper oxide nanoparticles embedded glass sample (BCSm3), the intensity parameters of all the glasses obeyed the pattern Ω 6 ˃Ω 4 ˃Ω 2 ; a similar trend was reported by Mohammed et al regarding Sm 3+ activated calcium sulfate phosphate glasses [ 60 ]. The incorporation of copper oxide nanoparticles ensured the change in the pattern to Ω 4 ˃Ω 6 ˃Ω 2 .…”

“…It was observed that the increase in the Sm 2 O 3 contents up to 1.0 mol% ensured the decrease in the Ω 2 value from 0.294×10 − 20 to 0.265 10 −20 cm 2 ; thus, it was concluded that the covalency of the Sm 3+ bond is weakened with increasing Sm 3+ concentration. Ω 4 and Ω 6 exhibited a similar trend; however, their combined effect improved the spectroscopic quality factor from 0.921 to 1.081, a value higher than the reported value of 0.591 for Sm 3+ doped phosphate-based glasses [ 60 ]. The achieved spectroscopic quality factor is fit for lasing application.…”

Investigation of the spectral characteristics of Sm3+ ions in lead borosilicate glass for photonic applications

“…The covalent band of the samarium–oxygen and the asymmetry surrounding the Sm 3+ ion position are shown by the magnitude of parameter Ω 2 , while the stiffness and viscousness of the glass are indicated by Ω 4 and Ω 6 parameters, respectively. The values of the intensity parameters Ω 2 , Ω 4 and Ω 6 in the BPbSALfSm glass were compared with those of Sm 3+ ‐doped glass [12, 17, 23, 24, 26, 28–31, 43]. For various emission levels, spectroscopic properties are computed from the J–O parameters, which determined the present titled glass to be used as efficient materials in LEDs and laser applications.…”

“…Due to the partially filled f-f levels, Sm 3+ ions are desirable for research because they can produce an intense luminescence in the reddish orange wavelength. Moreover, due to their extensive range of energy levels, longer meta-stable lifetimes, high photoluminescence intensity level, larger stimulated emission cross-section, and quantum efficiency, Sm 3+ ion-doped systems have been recommended as being especially favourable for active mediums [29][30][31][32][33][34].…”