Abstract Erbium (Er 3+ ) ion doped bismuth phosphate (BiP) glasses were fabricated by melt quenching technique. In the current project, studied the influence of bismuth content and Er 3+ ion doping concentration on photoluminescence (PL) performance and therefore find out the most qualified combination of bismuth and Er 3+ for developing compact optical fibre lasers and amplifiers operating at 1.53 μm. Optical absorption measurements are carried out and analysed through Judd-Ofelt (JO) and Mc-Cumber theories from which JO parameters, absorption and stimulated emission cross-sections are determined. The studied glasses show intense and broad visible emission at 545 nm (green) for 4 S 3/2 → 4 I 15/2 transition with the excitation 379 nm might be useful for green laser applications. The luminescence behaviour of 4 I 13/2 → 4 I 15/2 transition in the wavelength region 1400–1700 nm and its suitability for optical amplifier applications and also for NIR laser have been discussed with parameters such as stimulated emission cross-section (σ e ), gain bandwidth (ΔG) and optical gain (G). The decay curves for both 4 S 3/2 (visible) and 4 I 13/2 (NIR) levels are discussed and they are exhibiting non-exponential nature for all the studied BiP glasses. Among all the BiP glasses, Er-1.0 glass exhibited higher σ e , ΔG and G values suggesting the suitability for optical amplifier and NIR laser applications.

中文翻译：

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用于激光应用的 Er 3+ 掺杂磷酸铋玻璃的绿光和 1.53 μm 发射特性研究

摘要 采用熔体淬火技术制备了掺铒(Er 3+ )离子的磷酸铋(BiP)玻璃。在当前项目中，研究了铋含量和 Er 3+ 离子掺杂浓度对光致发光 (PL) 性能的影响，从而找到了用于开发工作在 1.53 μm 的紧凑型光纤激光器和放大器的最合格的铋和 Er 3+ 组合. 光吸收测量是通过 Judd-Ofelt (JO) 和 Mc-Cumber 理论进行和分析的，根据这些理论可以确定 JO 参数、吸收和受激发射截面。所研究的玻璃在 4 S 3/2 → 4 I 15/2 跃迁的 545 nm（绿色）处显示出强烈而宽的可见光发射，激发波长为 379 nm，这可能对绿色激光应用有用。4 I 13/2 → 4 I 15/2 跃迁在 1400-1700 nm 波长范围内的发光行为及其对光放大器应用和 NIR 激光器的适用性已经通过诸如受激发射截面 (σ e )、增益带宽 (ΔG) 和光学增益 (G)。讨论了 4 S 3/2（可见光）和 4 I 13/2 (NIR) 能级的衰减曲线，它们对所有研究的 BiP 玻璃都表现出非指数性质。在所有 BiP 玻璃中，Er-1.0 玻璃表现出更高的 σ e 、ΔG 和 G 值，表明适用于光放大器和 NIR 激光应用。讨论了 4 S 3/2（可见光）和 4 I 13/2 (NIR) 能级的衰减曲线，它们对所有研究的 BiP 玻璃都表现出非指数性质。在所有 BiP 玻璃中，Er-1.0 玻璃表现出更高的 σ e 、ΔG 和 G 值，表明适用于光放大器和 NIR 激光应用。讨论了 4 S 3/2（可见光）和 4 I 13/2 (NIR) 能级的衰减曲线，它们对所有研究的 BiP 玻璃都表现出非指数性质。在所有 BiP 玻璃中，Er-1.0 玻璃表现出更高的 σ e 、ΔG 和 G 值，表明适用于光放大器和 NIR 激光应用。