Luminescence properties of Yb3+/Na+ codoped CaF2 crystal and

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Key Laboratory of Optoelectronic Information Technical Science, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China [1 ]
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Wuli Xuebao | 2007年 / 6卷 / 3553-3558期
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摘要：
Basing on measuring the luminescence spectra at room temperature pumped by 975 nm light, the action mechanism of Na+ in the novel Yb3+, Na+: CaF2 crystal was systemically investigated. The relation between the concentration of doping Na+ and the laser operation threshold was analyzed. The optimum match concentration for Yb3+, Na+: CaF2 with low laser threshold was obtained. In the experiment, the lowest laser operation threshold at only 70 mW of absorbing pumped power for 2% Yb3+, 3% Na+: CaF2 crystal is realized, which is in good agreement with the analysis of luminescence properties.
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