【摘要】 基于975nm激发的室温下荧光光谱测量,系统地研究了在新型钠、镱共掺的氟化钙晶体中钠离子的作用机理,分析了掺钠离子浓度与激光阈值的关系,获得了具有最低激光阈值的掺杂浓度优化配比.激光实验表明对于2%Yb3+离子浓度的氟化钙,掺入3%的钠离子能够获得最低阈值的激光运转,这与理论和荧光分析完全一致.更多还原

【Abstract】 Basing on measuring the luminescence spectra at room temperature pumped by 975-nm light, the action mechanism of Na+ in the novel Yb 3+ ,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 Yb 3+ ,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%Yb 3+ ,3%Na+:CaF₂ crystal is realized, which is in good agreement with the analysis of luminescence properties.更多还原