Abstract The range of emission cross-section in RE3+ ions play a key role in developing optical systems with high performance. The present work focuses on mid infrared and visible emission properties of Er3+/Ho3+ions in sodium-sulfo lead phosphate (GExHy) glasses. The EDS, XRD and FTIR spectra were performed for basic structural analysis. Besides, DC (down-conversion) and UC (up-conversion), photoluminescence (PL) spectra of the prepared GExHy glasses pumped at 379 nm and 980 nm are investigated. The favourable concentration of Ho2O3 was estimated from the analysis of NIR PL spectra for Ho3+: 2.0 μm and Er3+: 1.5 μm. In GExHy glasses, the increase in intensity near 2.0 μm with decrease in intensity at 1.5 μm infers to energy transfer process between Er3+ and Ho3+ ions. The maximum energy transfer efficiency of GExHy samples is 75.5% and with the increase of Ho3+ ions, the lifetime decay has been reduced from 5.06 ms to 1.24 ms. The absorption and stimulated emission cross-section of Er3+:1.5 μm and Ho3+: 2.0 μm were calculated. Moreover, FWHM × σ emi was calculated for Ho3+:5I7→5I8 transition to estimate the probable MIR laser emission. The CIE color coordinates were estimated from both DC and UC PL spectra. All the results indicated that the prepared GExHy glasses have promising material applications in mid-infrared solid-state lasers and telecommunications.

中文翻译：

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由 Er3+ 离子增强的 Ho3+ 掺杂磷酸盐玻璃中的高效 2.01 μm 中红外 (MIR) 和可见光发射

摘要 RE3+离子的发射截面范围在开发高性能光学系统中起着关键作用。目前的工作重点是钠-磺基磷酸铅 (GExHy) 玻璃中 Er3+/Ho3+ 离子的中红外和可见光发射特性。进行 EDS、XRD 和 FTIR 光谱以进行基本结构分析。此外，研究了所制备的 GExHy 玻璃在 379 nm 和 980 nm 泵浦的 DC（下转换）和 UC（上转换）、光致发光 (PL) 光谱。根据对 Ho3+：2.0 μm 和 Er3+：1.5 μm 的 NIR PL 光谱的分析，估计了有利的 Ho2O3 浓度。在 GExHy 玻璃中，强度在 2.0 μm 附近增加而强度在 1.5 μm 处降低，这表明 Er3+ 和 Ho3+ 离子之间存在能量转移过程。GExHy 样品的最大能量转移效率为 75。5%，随着 Ho3+ 离子的增加，寿命衰减从 5.06 ms 减少到 1.24 ms。计算了 Er3+:1.5 μm 和 Ho3+: 2.0 μm 的吸收和受激发射截面。此外，还计算了 Ho3+:5I7→5I8 跃迁的 FWHM × σ emi 以估计可能的 MIR 激光发射。CIE 颜色坐标是从 DC 和 UC PL 光谱估计的。所有结果表明，制备的 GExHy 玻璃在中红外固体激光器和电信领域具有广阔的应用前景。CIE 颜色坐标是从 DC 和 UC PL 光谱估计的。所有结果表明，制备的 GExHy 玻璃在中红外固体激光器和电信领域具有广阔的应用前景。CIE 颜色坐标是从 DC 和 UC PL 光谱估计的。所有结果表明，制备的 GExHy 玻璃在中红外固体激光器和电信领域具有广阔的应用前景。