Growth, thermal properties and laser operation of a new disordered crystal: Nd-doped Sr3La2(BO3)4
Growth, thermal properties and laser operation of a new disordered crystal: Nd-doped Sr3La2(BO3)4
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DOI：
10.1016/j.jallcom.2014.04.066
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发表时间：
2014-07
影响因子：
6.2
通讯作者：
Z. Pan;Huaqiang Cai;Hui Huang;Haohai Yu;Huaijin Zhang;Ji-yang Wang
中科院分区：
文献类型：
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作者：
Z. Pan;Huaqiang Cai;Hui Huang;Haohai Yu;Huaijin Zhang;Ji-yang Wang
对一种新型无序激光晶体Nd：Sr 3La 2（BO 3）4的生长、结构、热学性质、非均匀展宽光谱和激光性能进行了研究，结果表明该晶体有望成为高功率超短脉冲钕激光器的增益材料。首次系统地研究了一整套各向异性热性能。结果表明，沿沿着三个晶向的热导率均随温度的升高而增大，表现出类似玻璃的行为。测量了Nd：Sr 3La 2（BO 3）4晶体在298.15K和77.2K下的偏振吸收光谱和荧光光谱。结果表明，Nd ~（3+）离子的吸收和发射光谱都得到了非均匀展宽，在产生飞秒脉冲的激光系统中具有很好的应用前景。首次实现了沿着b切和c切方向的1.06 μm连续激光运转。切割样品的最大输出功率为533 mW，光转换效率为5.5%，斜效率为6.4%。
A novel disordered laser crystal Nd:Sr3La2(BO3)4is characterized including its crystal growth, structure, thermal properties, inhomogeneously broadened spectra, and laser performance, which result that this crystal should be a promising gain material for the high-power ultrashort pulsed neodymium laser. The complete set of anisotropic thermal properties were systematically studied for the first time. It has been found that all the thermal conductivities along the three crystallographic directions increase with temperature, indicating a glass-like behavior. Polarized absorption and fluorescence spectra of Nd:Sr3La2(BO3)4crystal were measured at 298.15 K and 77.2 K, respectively. The results show that both the absorption and the emission spectra of Nd3+have been inhomogeneously broadened, and thus it is very promising to be used in laser systems to produce femtosecond pulses. CW laser operations at 1.06 μm along theb-cut andc-cut directions have been demonstrated for the first time. A maximum power of 533 mW with an optical conversion efficiency of 5.5% and slope efficiency of 6.4% was achieved in thec-cut sample.