无机材料学报

• 研究论文 •    

Dy:Y2SiO5和Dy,Tb:Y2SiO5单晶生长与黄光发射光谱性能

刘宇霄, 梁飞   

  1. 山东大学 晶体材料研究院,晶体材料全国重点实验室,济南 250100
  • 收稿日期:2025-09-28 修回日期:2025-10-22
  • 通讯作者: 梁飞, 教授. E-mail: liangfei@sdu.edu.cn
  • 作者简介:刘宇霄(2001-), 男, 硕士研究生. E-mail: 202312754@mail.sdu.edu.cn
  • 基金资助:
    国家重点研发计划项目(2023YFF0718801, 2021YFA0717800); 国家自然科学基金(52372010, 52422201)

Growth and Yellow Emission Spectral Properties of Dy:Y2SiO5 and Dy,Tb:Y2SiO5 Single Crystals

LIU Yuxiao, LIANG Fei   

  1. State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan 250100, China
  • Received:2025-09-28 Revised:2025-10-22
  • Contact: LIANG Fei, professor. E-mail: liangfei@sdu.edu.cn
  • About author:LIU Yuxiao (2001–), male, Master candidate. E-mail: 202312754@mail.sdu.edu.cn
  • Supported by:
    National Key Research and Development Program of China (2023YFF0718801, 2021YFA0717800); National Natural Sci ence Foundation of China (52372010, 52422201)

摘要: 波长位于570~590 nm的黄光激光在流式细胞检测、钠导星信标、眼科手术治疗等前沿领域具有重要应用价值。采用蓝光激光二极管直接泵浦Dy3+掺杂晶体产生黄光激光,是一种结构简单、高效紧凑且稳定性高的全固态黄光激光器设计方案。但Dy3+掺杂黄光激光晶体研究主要集中于低声子能量的氟化物,对高声子能量的氧化物晶体探索较少。本研究采用光学浮区法成功生长出高质量的Dy3+单掺及Dy3+、Tb3+共掺杂的Y2SiO5 (YSO)晶体,测试了两种晶体的透过光谱和拉曼光谱,并详细研究了Dy:YSO和Dy,Tb:YSO晶体中的黄光发射和能量转移过程。结果显示,与单掺Dy:YSO相比,Dy,Tb:YSO晶体在450 nm处的蓝光吸收截面从1.75×10-21 cm2提高至2.21×10-21 cm2,在574 nm处的黄光发射截面从3.45×10-21 cm2提升至4.32×10-21 cm2。利用共掺Tb3+离子作为退激活离子,Dy3+6H13/2能级到Tb3+7F4能级的能量转移效率为50.7%,使Dy3+6H13/2下能级的寿命缩短至202.9 µs,有利于实现粒子数反转,获得黄光激光输出。本研究结果表明,Dy,Tb:YSO晶体是一种具有研究价值和应用潜力的黄光激光增益介质。

关键词: Dy:YSO, Dy, Tb:YSO, 黄光激光, 晶体生长

Abstract: Yellow laser sources in the range of 570-590 nm have many important applications in the frontier fields such as flow cytometry, sodium guide star, and ophthalmic surgery. Yellow laser output by blue laser diode pumped Dy3+-doped crystals is a promising technology with advantages of high efficiency, compactness, and high power stability. However, Dy3+-doped laser crystals mainly focused on low-phonon-energy fluorides, while the high-phonon-energy oxides were rarely studied. Herein, high-quality Dy3+-doped and Dy3+, Tb3+ co-doped Y2SiO5 (YSO) crystals were grown by the optical floating zone method. The yellow emission and energy transfer processes in Dy:YSO and Dy,Tb:YSO crystals were investigated. Compared with Dy:YSO, the absorption cross-section of Dy,Tb:YSO at 450 nm increases from 1.75×10-21 cm2 to 2.21×10-21 cm2, and the yellow emission cross-section at 574 nm increases from 3.45×10-21 cm2 to 4.32×10-21 cm2. In addition, the co-doped Tb3+ ions act as deactivator ions and the energy transfer efficiency from 6H13/2 level of Dy3+ to ⁷F4 level of Tb3+ is 50.7%. As a result, the lifetime of Dy3+ lower level is greatly shortened to 202.9 µs, which is favorable for population inversion and yellow laser output. These results indicate that Dy,Tb:YSO crystal is a promising yellow laser gain medium.

Key words: Dy:YSO, Dy, Tb:YSO, yellow laser, crystal growth

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