Yb∶Ca3(NbGa)5O12晶体的坩埚下降法生长及光学性能研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (4): 620-626.

Yb∶Ca₃(NbGa)₅O₁₂晶体的坩埚下降法生长及光学性能研究

赵涛, 艾蕾, 梁团结, 钱慧宇, 孙志刚, 潘建国

宁波大学材料科学与化学工程学院,浙江省光电探测材料及器件重点实验室,宁波 315211

收稿日期:2023-12-08 出版日期:2024-04-15 发布日期:2024-04-19
通信作者: 孙志刚,博士,助理研究员。E-mail:sunzhigang@nbu.edu.cn
作者简介:赵涛(1997—),男,山西省人,硕士研究生。E-mail:1254983331@qq.com
基金资助:
国家自然科学基金(51832009,512302300)

Growth and Optical Properties of Yb∶Ca₃(NbGa)₅O₁₂ Crystals by Bridgman Method

ZHAO Tao, AI Lei, LIANG Tuanjie, QIAN Huiyu, SUN Zhigang, PAN Jianguo

Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China

Received:2023-12-08 Online:2024-04-15 Published:2024-04-19

摘要/Abstract

摘要： 使用坩埚下降法成功生长出了镱离子掺杂钙铌镓石榴石晶体(Yb∶Ca₃(NbGa)₅O₁₂)。通过XRD测试分析了晶体的结构,该晶体为立方晶系,晶胞参数a=b=c=12.471 Å。对该晶体进行了拉曼光谱、透过光谱、吸收和发射光谱、荧光寿命等测试,计算了该晶体的吸收截面、发射截面、增益截面等。研究了在空气中退火对该晶体吸收光谱、发射光谱、荧光寿命的影响,退火前在935 nm处吸收截面为1.82×10^-20 cm²,退火后降低为1.40×10^-20 cm²,退火前在1 031 nm处的发射截面为0.56×10^-20 cm²,退火后降低为0.40×10^-20 cm²,退火前荧光衰减时间为1.42 ms,退火后为1.32 ms。结果表明,Yb∶Ca₃(NbGa)₅O₁₂单晶在空气中退火会对晶体的激光性能造成不利影响。

关键词: Yb∶Ca₃(NbGa)₅O₁₂晶体, 坩埚下降法, 吸收光谱, 发射光谱, 荧光衰减, 退火

Abstract: Ytterbium ion doped calcium niobium gallium garnet crystal (Yb∶Ca₃(NbGa)₅O₁₂) was successfully grown by Bridgman method. The structure of the crystal was analyzed by XRD. The crystal is cubic crystal system, and the unit cell parameter a=b=c=12.471 Å. The crystal was tested by Raman spectroscopy, transmission spectroscopy, absorption and emission spectroscopy, and fluorescence lifetime. The absorption cross section, emission cross section, and gain cross section of the crystal were calculated. The effects of annealing in air on the absorption spectrum, emission spectrum and fluorescence lifetime of the crystal were studied. The absorption cross section at 935 nm before annealing is 1.82×10^-20 cm², and it decreases to 1.40×10^-20 cm² after annealing. The emission cross section at 1 031 nm before annealing is 0.56×10^-20 cm², and it decreases to 0.40×10^-20 cm² after annealing. The fluorescence decay time before annealing is 1.42 ms, and it is 1.32 ms after annealing. The results demonstrate that the annealing of Yb∶Ca₃(NbGa)₅O₁₂ single crystal in air will adversely affect the laser performance of the crystal.

Key words: Yb∶Ca₃(NbGa)₅O₁₂ crystal, Bridgman method, absorption spectrum, emission spectrum, fluorescence decay, annealing

中图分类号:

O782

赵涛, 艾蕾, 梁团结, 钱慧宇, 孙志刚, 潘建国. Yb∶Ca₃(NbGa)₅O₁₂晶体的坩埚下降法生长及光学性能研究[J]. 人工晶体学报, 2024, 53(4): 620-626.

ZHAO Tao, AI Lei, LIANG Tuanjie, QIAN Huiyu, SUN Zhigang, PAN Jianguo. Growth and Optical Properties of Yb∶Ca₃(NbGa)₅O₁₂ Crystals by Bridgman Method[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(4): 620-626.

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Yb∶Ca₃(NbGa)₅O₁₂晶体的坩埚下降法生长及光学性能研究

Growth and Optical Properties of Yb∶Ca₃(NbGa)₅O₁₂ Crystals by Bridgman Method

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