A series of ZnF₂-WO₂-B₂O₃-TeO₂ (ZWFBT) glasses doped with different concentration of Dy³⁺ ions were prepared by using the melt quench method. The non-crystalline behavior of as-quenched ZWFBTDy glasses was approved by XRD spectra. The presence of different functional groups were identified by monitoring FT-IR spectra of ZWFBTDy glasses. The Differential Scanning Calorimetry (DSC) was used to estimate glass transition temperature (Tg) and thermal stability (ΔT) of an un-doped glass along with doped glasses. Physical parameters were estimated for Dy³⁺ doped ZWFBT glasses by using the formula available in the literature. The energy band gaps of as-quenched ZWFBTDy glasses were estimated by using three different theoretical models such as Mott and Davis relation, Hydrogenic Excitonic Model (HEM), and Urbach analysis. The optical absorption spectra were used to estimate the bonding parameters (δ) for elucidating the kind of bonding amide Dy³⁺ ions and its nearby ligands in the as-quenched glasses. The obtained experimental data from optical absorption spectra were compared with theoretical data calculated in the ambit of the Judd-Ofelt (J-O) theory. The J-O intensity parameters were estimated and a similar trend was observed (${\text{Ω}}_2>{\Omega }_6>$${\text{Ω}}_4$ ) for the as-prepared ZWFBTDy glasses. The results obtained using J-O intensity parameters are found consistent with the bonding parameters. The radiative parameters such as branching ratio, radiative transition, radiative lifetime, total radiative transition, absorption, and emission cross-sections were evaluated and discussed. The gain coefficient was evaluated for the NIR transitions of as-quenched ZWFBTDy glasses. The obtained results suggested that the as-prepared ZWFBTDy glasses were auspicious candidates for laser emission and optical communication applications.

采用熔体淬火法制备了一系列掺有不同浓度的Dy ³⁺离子的ZnF ₂ -WO ₂ -B ₂ O ₃ -TeO ₂（ZWFBT）玻璃。XRD光谱证实了淬火的ZWFBTDy玻璃的非晶态行为。通过监测ZWFBTDy眼镜的FT-IR光谱可以识别出不同官能团的存在。差示扫描量热法（DSC）用于估计未掺杂玻璃以及掺杂玻璃的玻璃化转变温度（Tg）和热稳定性（ΔT）。估算了Dy ^3+的物理参数通过使用文献中提供的公式来掺杂ZWFBT玻璃。通过使用三种不同的理论模型（例如Mott和Davis关系，水生激子模型（HEM）和Urbach分析），估算了淬火ZWFBTDy玻璃的能带隙。使用光吸收光谱来估计键合参数（δ），以阐明在淬火后的玻璃中键合的酰胺Dy ³⁺离子的种类及其附近的配体。将从光吸收光谱获得的实验数据与在贾德-奥费尔特（JO）理论的范围内计算的理论数据进行比较。估算JO强度参数并观察到类似趋势（${\text{Ω}}_{\mathrm{2个}}>{\Omega }_6>$${\text{Ω}}_4$）用于准备好的ZWFBTDy眼镜。发现使用JO强度参数获得的结果与结合参数一致。评估并讨论了辐射参数，例如支化比，辐射跃迁，辐射寿命，总辐射跃迁，吸收和发射截面。评估了淬火的ZWFBTDy眼镜的NIR跃迁的增益系数。所得结果表明，所制备的ZWFBTDy玻璃是用于激光发射和光通信应用的吉祥候选物。