Ho3+-doped low-hydroxyl (OH-) ZnF2 based fluoride glasses were prepared by using the conventional melt-quenching method in a glove box. The glasses have a composition of ZnF2-BaF2-SrF2-YF3-HoF3 (ZBSY-H), and the absorption coefficient of OH- in the ZBSY-H glasses was calculated to be only ∼0.003 cm−1 at 2.86 µm. Under the excitation of an 1120 nm laser, efficient 2.86 µm emissions were observed in the ZBSY-H glasses. The emission cross section of the ZBSY-H glasses was also calculated, and the corresponding value was ∼7.19 × 10−21 cm2. These results indicated that the ZBSY-H glasses were potential candidate for 2.86 µm laser applications.

中文翻译：

---

用于中红外激光应用的 Ho3+ 掺杂低羟基 ZnF2 基氟化物玻璃的 286 µm 发射特性研究

Ho3+ 掺杂的低羟基 (OH-) ZnF2 基氟化物玻璃是通过在手套箱中使用传统的熔融淬火方法制备的。该玻璃的组成为 ZnF2-BaF2-SrF2-YF3-HoF3 (ZBSY-H)，计算得出 ZBSY-H 玻璃中 OH- 的吸收系数在 2.86 µm 处仅为 ~0.003 cm-1。在 1120 nm 激光的激发下，在 ZBSY-H 玻璃中观察到有效的 2.86 µm 发射。还计算了 ZBSY-H 玻璃的发射截面，相应值为 ~7.19 × 10-21 cm2。这些结果表明 ZBSY-H 玻璃是 2.86 µm 激光应用的潜在候选者。