摘要
采用非化学计量配比的提拉法成功生长出Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4)晶体、Er^(3+)/Yb^(3+):SrLaGaO_(4)和Er^(3+):SrLaGaO_(4)晶体并进行了详细的光谱分析,同时对纯的SrLaGaO_(4)晶体进行了热学性能分析。与Er^(3+):SrLaGaO_(4)晶体相比,Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4)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;Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4)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Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4)晶体中Yb^(3+)的敏化作用和Pr^(3+)离子的去激活作用以及能量传递机制。总之,引入Yb^(3+)和Pr^(3+)有利于在Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4)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。
Crystals of Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4),Er^(3+)/Yb^(3+):SrLaGaO_(4),and Er^(3+):SrLaGaO_(4) were successfully grown using the non-stoichiometric ratio Czochralski method,and detailed spectroscopic analyses were conducted.Additionally,thermal performance analyses were performed on pure SrLaGaO_(4) crystals.Compared with Er^(3+):SrLaGaO_(4)crystal,Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4) 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 2.7μm erbium laser is suppressed successfully since the fluorescence lifetime of the 4I13/2 lower level of Er^(3+)decreases markedly while that of the upper 4I11/2 level falls slightly in Er^(3+)/Yb^(3+)/Pr^(3+):SrLaGaO_(4) crystal.Besides,the sensitization effect of Yb^(3+)ion and deactivation effect of Pr^(3+)ion as well as the energy transfer mechanism in Er^(3+)/Yb^(3+)/Pr^(3+)∶SrLaGaO_(4) crystal were studied in this work.In conclusion,the introduction of Yb^(3+)and Pr^(3+)ions is favorable for achieving an enhanced 2.7μm emission in Er^(3+)/Yb^(3+)/Pr^(3+)∶SrLaGaO_(4) crystal which can act as a promising candidate for mid-infrared lasers.
作者
乐旭星
王燕
朱昭捷
李坚富
涂朝阳
LE Xuxing;WANG Yan;ZHU Zhaojie;LI Jianfu;TU Chaoyang(Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;University of Chinese Academy of Sciences,Beijing 100039,China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2024年第6期905-912,共8页
Chinese Journal of Luminescence
基金
闽都实验室自主部署专项(2020zz108)
国家重点研发计划项目(2022YFB3605704)
国家自然科学基金区域创新与发展联合基金(U21A20508)
福建省科技计划引导性项目(2022H0043)。
