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Improved 2.79 μm continuous-wave laser performance from a diode-end pumped Er,Pr:CaF2 crystal

Authors :
Xiaodong Xu
Weiwei Ma
Jun Xu
Jingya Wang
Dapeng Jiang
Jie Liu
Lihe Zheng
Liangbi Su
Xiuwei Fan
Jingjing Liu
Source :
Journal of Alloys and Compounds. 695:3370-3375
Publication Year :
2017
Publisher :
Elsevier BV, 2017.

Abstract

The spectral properties of lightly doped Er:CaF 2 and Er,Pr:CaF 2 single crystals were investigated. Benefited from particular clustering effect, 2.79 μm continuous-wave (CW) laser operation was demonstrated in lightly doped 3 at.% Er:CaF 2 crystal. After co-doping small amount of Pr 3+ , the lifetime gap between Er 3+ : 4 I 11/2 and Er 3+ : 4 I 13/2 was shortened from 7.86 ms to about 1 ms. Moreover, the near-infrared and up-conversion fluorescence were significantly quenched. Thus, the CW laser performance was greatly improved. The slope efficiency was effectively improved from 8.0% to 15.8%.

Details

ISSN :
09258388
Volume :
695
Database :
OpenAIRE
Journal :
Journal of Alloys and Compounds
Accession number :
edsair.doi...........ed0863f8cc6bf497217e1b8e4cad3206
Full Text :
https://doi.org/10.1016/j.jallcom.2016.12.024