Crystal growth, spectroscopic characterization, and laser operation of Tm/Mg: LiTaO 3 crystal
Crystal growth, spectroscopic characterization, and laser operation of Tm/Mg: LiTaO 3 crystal
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DOI：
10.1364/ome.4.000255
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发表时间：
2014-02
影响因子：
2.8
通讯作者：
Peixiong Zhang;Jigang Yin;Shuaiyi Zhang;Rui Zhang;Lianhang Zhang;Youchen Liu;Jian-qiu Xu;Y. Hang-Y.
中科院分区：
文献类型：
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作者：
Peixiong Zhang;Jigang Yin;Shuaiyi Zhang;Rui Zhang;Lianhang Zhang;Youchen Liu;Jian-qiu Xu;Y. Hang-Y.
采用传统的Czochralski法生长Tm、Mg共掺杂LiTaO3晶体。利用Judd-Ofelt分析了Tm/Mg: LiTaO3单晶的吸收和发射测量结果，计算了强度参数Ω2、4、6、跃迁概率、退出态寿命、分支比和发射截面。首次证明了Tm/Mg: LiTaO3单晶的非光折变连续波激光操作。我们在1.92 μm处获得了1.51 W的输出功率，斜率效率接近38.5%，这是迄今为止我们所知道的该晶体的最大输出功率和最高斜率效率。定量分析了长期的光折变效应。
Tm, Mg co-doped LiTaO3 crystal is grown by the traditional Czochralski method. By analyzing the absorption and emission measurements of the Tm/Mg: LiTaO3 single crystal with the Judd-Ofelt analysis, the intensity parameters Ω2,4,6, transition probabilities, exited state lifetimes, branching ratios, and emission cross-sections were calculated. Non-photorefractive continuous wave laser operation with a Tm/Mg: LiTaO3 single crystal is demonstrated for the first time. We obtained 1.51 W output power at 1.92 μm with a slope efficiency of near 38.5%, which, to the best of our knowledge, are the largest output power and highest slope efficiency obtained for this crystal thus far. The long-term photorefractive effect was also quantitatively analyzed.