Intense 2.7μm emission from Er3+/Tm3+/Pr3+ triply doped LiYF4 single crystal grown by Bridgman method

[Display omitted] •An Er3+/Tm3+/Pr3+ triply doped LiYF4 single crystal with high quality has been grown by Bridgman method.•An enhanced emission from 2600nm to 2800nm was obtained.•The energy transfer mechanism of 2.7μm emission between Er3+, Tm3+ and Pr3+ ions was analyzed. Laser crystals of Er3+ s...

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Bibliographic Details
Published in:Journal of alloys and compounds 2013-10, Vol.573, p.187-191
Main Authors: Hu, Haoyang, Xia, Haiping, Hu, Jianxu, Wang, Peiyuan, Peng, Jiangtao, Zhang, Yuepin, Jiang, Haochuan, Chen, Baojiu
Format: Article
Language:English
Subjects:
Bridgman method
Cross-disciplinary physics: materials science
rheology
Crystal growth
Crystals
Doped crystals
Emission
Energy transfer
Er3+ ion
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Growth from melts
zone melting and refining
Infrared
Laser materials
Lasers
LiYF4 single crystal
Materials science
Methods of crystal growth
physics of crystal growth
Mid-infrared emission
Optical materials
Optics
Physics
Pr3+ ion
Tm3+ ion
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Summary:[Display omitted] •An Er3+/Tm3+/Pr3+ triply doped LiYF4 single crystal with high quality has been grown by Bridgman method.•An enhanced emission from 2600nm to 2800nm was obtained.•The energy transfer mechanism of 2.7μm emission between Er3+, Tm3+ and Pr3+ ions was analyzed. Laser crystals of Er3+ singly, Er3+/Tm3+, Er3+/Pr3+ doubly and Er3+/Tm3+/Pr3+ triply doped LiYF4 are grown by a vertical Bridgman method. The luminescent properties of the crystals were investigated. An intense emission at 2.7μm can be obtained by using 980nm laser diode excitation in the triply doped LiYF4 crystals. Meanwhile, the green and red up-conversion emission and near infrared emission at 1.5μm from Er3+ in the triply doped crystals were effectively restricted. The possible energy transfer processes and the luminescent mechanisms for the Er3+/Pr3+/Tm3+ triply doped crystals were proposed. Decay curve fitting using a Inokuti–Hirayama expression indicates a dipole–dipole energy transfer from Er3+ to Pr3+, and Er3+ to Tm3+, which is consistent with the expected cross-relation scheme. These results suggest that the Er3+/Tm3+/Pr3+ triply doped crystal may be considered as a promising material for a 2.7μm laser.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2013.04.018