Sc掺杂Nd:CaF2激光晶体的结构及其光谱性能参数

doi:10.15541/jim20170542

无机材料学报 ›› 2018, Vol. 33 ›› Issue (8): 873-876.DOI: 10.15541/jim20170542

Sc掺杂Nd:CaF₂激光晶体的结构及其光谱性能参数

逄思远¹, 钱小波², 吴庆辉², 于浩², 徐家跃¹, 苏良碧²

1. 上海应用技术大学材料科学与工程学院, 上海 201418;
2. 中国科学院上海硅酸盐研究所人工晶体研究中心, 上海 201800

收稿日期:2017-11-15 修回日期:2018-01-04 出版日期:2018-08-28 网络出版日期:2018-07-17
作者简介:逄思远(1992-), 男, 硕士研究生. E-mail: 1094961589@qq.com
基金资助:
国家重点研发计划(2016YFB0402101);国家自然科学基金(51272264, 91333106);中国科学院战略性先导科技专项(B类)(XDB16030000);The National Key Research and Development Program of China (2016YFB0402101);The Strategic Priority Program of the Chinese Academy of Sciences (XDB16030000)

Structure and Spectral Property of Sc Doped Nd:CaF₂ Laser Crystals

PANG Si-Yuan¹, QIAN Xiao-Bo², WU Qing-Hui², YU Hao², XU Jia-Yue¹, SU Liang-Bi²

1. School of Material Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2. Synthetic Single Crystal Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China

Received:2017-11-15 Revised:2018-01-04 Published:2018-08-28 Online:2018-07-17
About author:PANG Si-Yuan. E-mail: 1094961589@qq.com
Supported by:
National Natural Science Foundation of China (51272264, 91333106)

摘要/Abstract

摘要：

采用温度梯度法生长了0.5at% Nd、xat% Sc:CaF₂(x=0, 2, 5, 8)系列晶体, 测试了晶体的吸收光谱、荧光光谱和荧光寿命。研究发现发射强度和荧光寿命随着Sc³⁺离子浓度的增加而提高。通过改变Sc³⁺离子的浓度发现, 当掺杂5at% Sc³⁺时可以获得最大的吸收截面为1.42×10^-20 cm²。另外, 掺入Sc³⁺使共掺晶体在吸收光谱796 nm处产生新峰。综上, 通过调节Sc³⁺离子浓度, 可以改变Nd³⁺离子的局域结构, 优化晶体的光谱性能。

关键词: Nd:CaF₂晶体, 调剂离子, 局域结构, 光谱性能

Abstract:

0.5at% Nd, xat% Sc:CaF₂ single crystals (x=0, 2, 5, 8) were fabricated via the temperature gradient technique in this work. The absorption spectra, fluorescence spectra and fluorescence lifetime of 0.5at% Nd, xat% Sc:CaF₂ single crystals were investigated. Both fluorescence intensity and fluorescence lifetime were found to be enhanced with the increase of Sc³⁺ ion doping concentration. In addition, by optimizing the Sc³⁺ content, 0.5at% Nd, 5at% Sc:CaF₂ yielded the largest absorption cross section of 1.42×10^-20 cm². Moreover, a new peak were observed at 796 nm with the Sc³⁺ ion doped in 0.5at% Nd:CaF₂ crystals. Above all, the concentration of Sc³⁺ ion can regulate local structure of Nd³⁺ ion and optimize its crystalline spectral properties.

Key words: Nd:CaF₂ crystal, regulating ion, local structure, spectral property

中图分类号:

逄思远, 钱小波, 吴庆辉, 于浩, 徐家跃, 苏良碧. Sc掺杂Nd:CaF₂激光晶体的结构及其光谱性能参数[J]. 无机材料学报, 2018, 33(8): 873-876.

PANG Si-Yuan, QIAN Xiao-Bo, WU Qing-Hui, YU Hao, XU Jia-Yue, SU Liang-Bi. Structure and Spectral Property of Sc Doped Nd:CaF₂ Laser Crystals[J]. Journal of Inorganic Materials, 2018, 33(8): 873-876.

图/表 6

图1 0.5at% Nd, xat% Sc:CaF2的XRD图谱

Fig. 1 XRD patterns of 0.5%Nd, x% Sc:CaF2

图2 0.5at% Nd, xat% Sc:CaF2的吸收光谱

Fig. 2 Absorption spectra of 0.5at% Nd, xat% Sc:CaF2

图3 0.5at% Nd, xat% Sc:CaF2的吸收光谱

Fig. 3 Absorption spectra of 0.5at% Nd, xat% Sc:CaF2

图4 0.5at% Nd, xat% Sc:CaF2的荧光光谱

Fig. 4 Fluorescence spectra of 0.5at% Nd, xat% Sc:CaF2

图5 0.5at% Nd, xat% Sc:CaF2的荧光光谱

Fig. 5 Fluorescence spectra of0.5at% Nd, xat% Sc:CaF2

图6 0.5at% Nd, xat% Sc:CaF2的荧光寿命

Fig. 6 Fluorescence lifetimes of 0.5at% Nd, xat% Sc:CaF2

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Sc掺杂Nd:CaF₂激光晶体的结构及其光谱性能参数

Structure and Spectral Property of Sc Doped Nd:CaF₂ Laser Crystals

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