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Tm3+ and Nd3+ singly doped LiYF4 single crystals with 3-5 \mu m mid-infrared luminescence

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21

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0

References

2014

Year

Shanshan Li Shanshan Li, Peiyuan Wang, Haiping Xia Haiping Xia, Jiangtao Peng Jiangtao Peng, Lei Tang, Yuepin Zhang, Haochuan Jiang
Chinese Optics Letters

Abstract

Mid-infrared (MIR) emissions of 2.4 and 3.5 m from Tm 3+ :LiYF4 single crystals attributed to 3 H4 3 H5 and 3 H5 3 F4 transitions as well as MIR emissions of 4.2, 4.3, and 4.5 m from Nd 3+ : LiYF4 lasers attributed to 4 I 15/2 4 I 13/2 , 4 I 13/2 4 I 11/2 , and 4 I 11/2 4 I 9/2 transitions, respectively, are observed. LiYF4 single crystals possess high transmittance of over 85% in the 2.5-6 m range. The large emission crosssections of Tm-doped crystals at 2.4 m (1.910 -20 cm 2 ) and Nd-doped crystals at 4.2 m (0.8410 -20 cm 2 ) as well as the high rare-earth doping concentrations, excellent optical transmission, and chemicalphysical properties of the resultant samples indicate that Nd 3+ and Tm 3+ singly doped crystals may be promising materials for application in MIR lasers.