【摘要】 采用非化学计量配比的提拉法成功生长出Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄晶体、Er³⁺/Yb³⁺:SrLaGaO₄和Er³⁺:SrLaGaO₄晶体并进行了详细的光谱分析，同时对纯的SrLaGaO₄晶体进行了热学性能分析。与Er³⁺:SrLaGaO₄晶体相比，Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄晶体不仅展示了更好的吸收特性，而且还表现出较弱的近红外发射，以及优异的中红外发射；Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄晶体中2.7μm铒激光下能级4I13/2的荧光寿命显著减少，而上能级4I11/2的寿命略微下降，成功抑制了自终止效应。此外，本工作还研究了Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄晶体中Yb³⁺的敏化作用和Pr³⁺离子的去激活作用以及能量传递机制。总之，引入Yb³⁺和Pr³⁺有利于在Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄晶体中实现增强的2.7μm发射，这使其成为中红外激光有前途的候选材料。更多还原

【Abstract】 Crystals of Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄, Er³⁺/Yb³⁺:SrLaGaO₄, and Er³⁺:SrLaGaO₄ were successfully grown using the non-stoichiometric ratio Czochralski method, and detailed spectroscopic analyses were conducted. Additionally, thermal performance analyses were performed on pure SrLaGaO₄ crystals. Compared with Er³⁺:SrLaGaO₄crystal, Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄ crystal not only shows better absorption characteristics but also exhibits weaker near-infrared emissions, as well as superior mid-infrared emissions. Furthermore, the self-termination effect for the 2. 7 μm erbium laser is suppressed successfully since the fluorescence lifetime of the 4I13/2 lower level of Er³⁺ decreases markedly while that of the upper 4I11/2 level falls slightly in Er³⁺/Yb³⁺/Pr³⁺:SrLaGaO₄ crystal. Besides, the sensitization effect of Yb³⁺ ion and deactivation effect of Pr³⁺ ion as well as the energy transfer mechanism in Er³⁺/Yb³⁺/Pr³⁺∶SrLaGaO₄ crystal were studied in this work. In conclusion, the introduction of Yb³⁺ and Pr³⁺ ions is favorable for achieving an enhanced 2. 7 μm emission in Er³⁺/Yb³⁺/Pr³⁺∶SrLaGaO₄ crystal which can act as a promising candidate for mid-infrared lasers.更多还原