Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221, Indonesia.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, 45363, Indonesia.
Spectrochim Acta A Mol Biomol Spectrosc. 2019 Dec 5;223:117342. doi: 10.1016/j.saa.2019.117342. Epub 2019 Jul 9.
The trivalent erbium (Er doped sodium lithium borate glass with composition (65-x)BO-15NaO-10PbO-5ZnO-5LiO-xErO have been successfully fabricated by melt-quench technique. The structural properties were investigated by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR). The absorption and luminescence spectra of glass samples were measured to determine the spectroscopic properties. The Judd-Ofelt parameters were calculated based on absorption spectra with values of Ω, = 4.39, Ω = 3.22, and Ω = 0.91 (×10 cm) for 2.0 mol% Er ion doped sodium lithium borate glass. Furthermore, radiative properties including effective bandwidth (Δλ), radiative transition probability (A), radiative lifetime (τ), and branching ratio (β) were also calculated and analyzed. A strong emission band at 1532 nm was observed corresponding to I → I transition under the excitation wavelength of 528 and 976 nm. The stimulated emission cross-section (σ) and figure of merit (FWHM xσ) were calculated and compared with other glasses in order to evaluate the properties of the present samples for optical amplifier. Based on the characterization results, we found that the glass with 2.0 mol% Er ion doped sodium lithium borate glass had the highest stimulated emission cross section compared to other samples and were comparable with the previous reports.
采用熔融淬冷法成功制备了组成分别为（65-x）BO-15NaO-10PbO-5ZnO-5LiO-xErO 的掺铒三价硼酸盐钠锂玻璃（x=0，0.5，1.0，1.5 和 2.0）。通过 X 射线衍射（XRD）和傅里叶变换红外（FTIR）研究了玻璃的结构性能。测量了玻璃样品的吸收和荧光光谱，以确定其光谱性能。根据吸收光谱计算了 Judd-Ofelt 参数，对于 2.0 mol% Er 离子掺杂的钠锂硼酸盐玻璃，得到的值为Ω=4.39、Ω=3.22 和 Ω=0.91（×10 cm）。此外，还计算和分析了辐射性能，包括有效带宽（Δλ）、辐射跃迁概率（A）、辐射寿命（τ）和分支比（β）。在 528nm 和 976nm 的激发波长下，观察到对应于 I→I 跃迁的 1532nm 强发射带。计算并比较了掺铒钠锂硼酸盐玻璃的受激发射截面（σ）和品质因数（FWHM×σ）与其他玻璃的性能，以评估本样品在光放大器中的性能。基于表征结果，我们发现，与其他样品相比，掺 2.0mol%Er 离子的钠锂硼酸盐玻璃具有最高的受激发射截面，与之前的报告相当。
