Nd³⁺ doped multi-component phosphate glass was prepared by the conventional melt-quenching method. The absorption spectrum, emission spectrum, and fluorescence lifetime of the prepared glass were measured. Based on the absorption spectrum, Judd-Ofelt (J-O) intensity parameters, spectroscopic quality factor, absorption and emission cross-sections, and figure of merit were calculated and analyzed. What is more, multi-material fibers with Nd³⁺ doped multi-component phosphate glass core and silicate glass cladding were successfully drawn by using the molten core method. The Nd³⁺ doping concentration reaches as high as 3.82 × 10²⁰ ions/cm³ (3.86 wt.%). More importantly, 1.05 μm amplified spontaneous emission (ASE) was realized in a 4-cm-long as-drawn multi-material fiber when pumped by an 808 nm laser diode (LD). These results suggest that the Nd³⁺ doped multi-component phosphate glass multi-material fibers are promising gain material for 1.05 μm fiber laser applications.

中文翻译：

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用于 1.05 μm 激光器的 Nd3+ 掺杂多组分磷酸盐玻璃多材料光纤

Nd ³⁺掺杂的多组分磷酸盐玻璃采用常规熔融淬火法制备。测量了制备的玻璃的吸收光谱、发射光谱和荧光寿命。基于吸收光谱，计算和分析了 Judd-Ofelt (JO) 强度参数、光谱品质因数、吸收和发射截面以及品质因数。此外，采用熔融纤芯法成功拉制了掺Nd ³⁺多组分磷酸盐玻璃纤芯和硅酸盐玻璃包层的多材料光纤。Nd ³⁺掺杂浓度高达3.82 × 10 ²⁰ ions/cm ³(3.86 重量％)。更重要的是，当由 808 nm 激光二极管 (LD) 泵浦时，在 4 cm 长的拉伸多材料光纤中实现了 1.05 μm 放大自发发射 (ASE)。这些结果表明，Nd ³⁺掺杂的多组分磷酸盐玻璃多材料光纤是用于 1.05 μm 光纤激光器应用的有前途的增益材料。