Spectral assessment analysis of Dy3+-doped Ca3La2(BO3)4 crystal:a candidate for solid state yellow lasers

Dy3+:Ca3La2(BO3)4 crystal has been grown by the Czochralski method. The polarized absorption, emission spectra and decay lifetime measurements of Dy3+-doped Ca3La2(BO3)4 crystal have been performed at room temperature. Based on the Judd-Ofelt theory, the spectroscopic parameters Ωt (t = 2,4,6), radi...

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Bibliographic Details
Published in:Laser physics 2014-03, Vol.24 (4)
Main Authors: Wang, Yeqing, Zhu, Zhaojie, Li, Jianfu, You, Zhenyu, Xu, Jinlong, Wang, Yan, Wang, Hongyan, Tu, Chaoyang
Format: Article
Language:English
Subjects:
BO
Ca
crystal
crystal growth
Judd-Ofelt theory analysis
spectra characteristics
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Summary:Dy3+:Ca3La2(BO3)4 crystal has been grown by the Czochralski method. The polarized absorption, emission spectra and decay lifetime measurements of Dy3+-doped Ca3La2(BO3)4 crystal have been performed at room temperature. Based on the Judd-Ofelt theory, the spectroscopic parameters Ωt (t = 2,4,6), radiative transition probabilities, radiative lifetimes and fluorescence branching ratios were obtained. The emission cross-section of the 4F9 2 →6H13 2 transition which was useful for the laser application has been calculated by the Fuchtbauer-Ladenburg (FL) equation. The quantum efficiency was calculated to be 89.7%, which was larger than that of some reported crystals. Those results showed that Dy3+:Ca3La2(BO3)4 crystal was a promising candidate for solid state yellow laser emission.
ISSN:1054-660X
1555-6611
DOI:10.1088/1054-660X/24/4/045804