Effect of [Li]/[Nb] ratios on UV-VIS-NIR spectroscopy and up-conversion luminescence in Hf:Dy:LiNbO3 crystals

被引：8

作者：

Dai, Li ^{[1
]}

Yang, Shunxiang ^{[1
]}

Chen, Ruirun ^{[2
]}

Liu, Chunrui ^{[1
]}

Han, Xianbo ^{[1
]}

Shao, Yu ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Coll Sci, Harbin 150080, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, Dept Mat Engn, Harbin 150001, Hei Longjiang, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2020年 / 217卷

关键词：

Hf:Dy:LiNbO3 crystals; Up-conversion luminescence; Luminescence lifetime; OPTICAL-DAMAGE RESISTANCE; JUDD-OFELT THEORY; EMISSION; GLASSES; ER3+;

D O I：

10.1016/j.jlumin.2019.116773

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A series of Hf:Dy:LiNbO3 crystals with various [Li]/[Nb] ratios ([Li]/[Nb] = 0.946, 1.05, 1.20 and 1.38) in the melt were grown by the Czochralski method. The UV-VIS-NIR absorption spectra of Hf:Dy:LiNbO3 crystals were measured, and Judd-Ofelt (J-O) theory is used to evaluate the transition intensity parameters Omega(2), 4, 6 and spectroscopic quality factor (X). The X of Hf:Dy:LiNbO3 crystals with the [Li]/[Nb] ratio of 1.38 was found to be 2.11. The up-conversion luminescence at around 475 nm, 582 nm, 653 nm and 749 nm of Dy3+ ions were observed under 800 nm excitation. The energy transfer mechanisms of up-conversion process were analyzed in detail, and luminescence lifetime was measured. The results show that Hf:Dy:LiNbO3 crystal is an excellent candidate for laser medium.

引用

页数：6

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