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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Upconversion/back-transfer losses and emission dynamics in Nd3+-Yb3+ co-doped phosphate glasses for multiple pump channel laser
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Upconversion/back-transfer losses and emission dynamics in Nd3+-Yb3+ co-doped phosphate glasses for multiple pump channel laser

机译：用于多个泵通道激光器的ND3 + -YB3 +共掺杂磷酸盐玻璃中的上变频/背部传输损失和排放动态

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摘要

An active phosphate glass system co-doped with Nd3+ and Yb3+ rare earth, optically active ions was studied using steady-state and time-resolved luminescence spectroscopies. Because this system exhibits great potential for the development of multiple pump channel Yb3+ lasers, this work attempts to identify losses in order to establish the limits of its radiative efficiency. To achieve this, multiple upconverted visible emissions related to Nd3+ ions were observed in experiments carried out under near-infrared excitation at around 800 nm. An analysis was carried out to clarify if these upconverted emissions were governed by excited-state absorption of pump radiation or energy transfer between the rare earth ions. Another potential source of losses is related to energy back-transfer from Yb3+ to Nd3+ ions. However, no evidence of this phenomenon was observed, which is a good result for laser applications. Finally, the luminescence dynamics of the Yb3+ ions were investigated in the framework of fast-diffusion processes.
机译：使用稳态和时间分辨的发光光谱研究了一种有源磷酸盐玻璃系统，与Nd3 +和Yb3 +稀土，光学活性离子进行了光学活性离子。由于该系统表现出多泵通道YB3 +激光器的发展潜力，因此该工作试图识别损耗以确定其辐射效率的极限。为此，在近红外激发率约为800nm的实验中观察到与ND3 +离子相关的多种上络可见的排放。进行分析，以澄清这些上变化的排放是通过兴奋状态的泵辐射或稀土离子的能量转移来治理的。另一个潜在的损失来源与来自YB3 +至Nd3 +离子的能量回转移有关。然而，没有观察到这种现象的证据，这是激光应用的良好结果。最后，在快速扩散过程的框架中研究了YB3 +离子的发光动力学。

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