Abstract
An Er:Yb:NaCe(WO4)2 crystal was grown by the Czochralski method. Spectral properties of the crystal were investigated and compared with those of the Er:Yb:Ce:NaGd(WO4)2 crystal. The green up-conversion was not observed when the Er:Yb:NaCe(WO4)2 crystal was excited by a diode laser at 970 nm. The efficiency of energy transfer from Yb3+ to Er3+ in the Er:Yb:NaCe(WO4)2 crystal was calculated to be about 93%. End-pumped by a diode laser at 970 nm in a hemispherical cavity, 0.95 W quasi-CW laser at 1.5–1.6 μm was achieved in a 1.47-mm-thick c-cut Er:Yb:NaCe(WO4){ia2} crystal, the slope efficiency was 11%, and the threshold was 2.83 W.
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Huang, J.H., Chen, Y.J., Gong, X.H. et al. Spectral properties and 1.5–1.6 μm laser operation of Er:Yb:NaCe(WO4)2 crystal. Laser Phys. 22, 146–151 (2012). https://doi.org/10.1134/S1054660X12010069
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DOI: https://doi.org/10.1134/S1054660X12010069