掺镨钒酸钆晶体的研究.pdfVIP

掺镨钒酸钆晶体的研究 1 1 1 1 2 2 3 邹玉林 ，吴敬朋 ，臧竞存 ，郑锴 ，刘玉龙 ，朱恪 ，宋晏蓉 1 北京工业大学材料学院，北京 100022 2 中国科学院物理研究所光物理开放实验室，北京 100080 3 北京工业大学应用数理学院，北京 100022 摘要：首次生长了新型激光晶体Pr:GdVO ，经XRD分析可知生长所得晶体与纯GdVO 晶体结构一致，晶体 4 4 质量良好。室温下，测试了晶体 400nm~3000nm范围内的吸收光谱。通过对吸收光谱研究，发现σ谱图中各 吸收峰吸收强度更大，宜选择入射光传播方向和电矢量均垂直于光轴的方向进行激光实验。采用 404nm 的 激发源抽运Pr:GdVO4 晶体，测试其荧光光谱，发现在其在可见波段有宽且强荧光发射(604nm、616nm)，对 应于1 3 D →H 。比较不同浓度晶体的荧光谱，荧光强度呈现如下趋势：0.5 ％＞0.7 ％＞0.32 ％，得出GdVO 晶 2 4 4 体中最佳掺镨浓度为 0.5mol ％。 关键词：Pr3+离子；GdVO 晶体；XRD ；吸收光谱；荧光光谱 4 Studies on Pr-Doped Gadolinium Vanadate Crystals 1 1 1 1 Zou Yu-lin , Wu Jing-peng , Zang Jing-cun , Zheng Kai , 2 2 3 Liu Yu-long , Zhu Ke , Song Yan-rong (1 College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China 2 Key Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China 3 College of Applied Science, Beijing University of Technology, Beijing 100022, China) Abstract: Pr:GdVO4 crystals were grown by using Czochraliski pulling method for the first time to our knowledge. The structures of the crystals we have grown were studied by XRD method, and the results confirmed that their structures were the same with the pure GdVO4 crystal. Crystals’ absorption spectrum had been measured from 40