Journal of Inorganic Materials ›› 2026, Vol. 41 ›› Issue (7): 930-938.DOI: 10.15541/jim20250380

• RESEARCH ARTICLE • Previous Articles     Next Articles

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 Published:2026-07-20 Online:2025-10-31
  • 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);National Key Research and Development Program of China(2021YFA0717800);National Natural Science Foundation of China(52372010);National Natural Science Foundation of China(52422201)

Abstract:

Yellow laser sources in the range of 570-590 nm have many important applications in frontier fields such as flow cytometry, sodium guide star, and ophthalmic surgery. Yellow laser output from 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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