Er3+/Yb3+/Pr3+:SrLaGaO4晶体的光谱分析及中红外发射增强
Spectroscopic Analysis and Mid-infrared Emission Enhancement in Er3+/Yb3+/Pr3+:SrLaGaO4 Crystal
乐旭星 1王燕 2朱昭捷 2李坚富 2涂朝阳2
作者信息
- 1. 中国科学院福建物质结构研究所 光电材料化学与物理重点实验室,福建 福州 350002;中国科学院大学,北京 100039
- 2. 中国科学院福建物质结构研究所 光电材料化学与物理重点实验室,福建 福州 350002
- 折叠
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2.7 μm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2.7 μm发射,这使其成为中红外激光有前途的候选材料.
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.Addi-tionally,thermal performance analyses were performed on pure SrLaGaO4 crystals.Compared with Er3+:SrLaGaO4 crystal,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+decreas-es 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-infra-red lasers.
关键词
SrLaGaO4晶体/Er3+掺杂/晶体生长/中红外激光晶体/光谱分析Key words
SrLaGaO4 crystal/Er3+doping/crystal growth/mid-infrared laser crystal/spectroscopic analysis引用本文复制引用
基金项目
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)
出版年
2024
国家科技期刊平台
NSTL
万方数据