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首页> 外文期刊>Optical Materials >Growth, thermal and optical properties of Yb:GdYAl_3(BO_3)_4 crystal
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Growth, thermal and optical properties of Yb:GdYAl_3(BO_3)_4 crystal

机译：Yb：GdYAl_3（BO_3）_4晶体的生长，热和光学性质

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摘要

Single crystal of Yb:GdYAl_3(BO_3)_4(Yb:GdYAB) has been grown by the flux method. The structure of Yb:GdYAB crystal has been determined by X-ray diffraction analysis. The experiment show that the crystal has the same structure as that of YAl_3(BO_3)_4 crystal and its unit cell constants have been measured to be a = 9.30146 A, c = 7.24164 A, Vol = 542.59 A~3. The absorption and fluorescence spectrum of Yb:GdYAl_3(BO_3)_4 crystal have also been measured at room temperature. In the absorption spectra, there are two absorption bands at 938 nm and 974 nm, respectively, which is suitable for InGaAs diode laser pumping. In the fluorescence spectra, there are two fluorescence peaks at 992 and 1040 nm. The thermal properties of Yb:GdYAl_3(BO_3)_4 crystal have been studied for the first time. The thermal expansion coefficient along c-axis is almost 5.4 times larger than that along a-axis. The specific heat of the crystal has been measured to be 0.77 J/g℃ at room temperature. The calculated thermal conductivity is 5.26 Wm~(-1) K~(-1) along a-direction.
机译：通过熔剂法生长了Yb：GdYAl_3（BO_3）_4（Yb：GdYAB）单晶。 Yb：GdYAB晶体的结构已通过X射线衍射分析确定。实验表明，该晶体具有与YAl_3（BO_3）_4晶体相同的结构，其晶胞常数经测量为a = 9.30146 A，c = 7.24164 A，Vol = 542.59 A〜3。 Yb：GdYAl_3（BO_3）_4晶体的吸收和荧光光谱也在室温下进行了测量。在吸收光谱中，分别在938 nm和974 nm有两个吸收带，适用于InGaAs二极管激光泵浦。在荧光光谱中，在992和1040 nm处有两个荧光峰。首次研究了Yb：GdYAl_3（BO_3）_4晶体的热性能。沿c轴的热膨胀系数几乎是沿a轴的热膨胀系数的5.4倍。晶体的比热在室温下测得为0.77 J / g℃。所计算的热导率沿a方向为5.26 Wm〜（-1）K〜（-1）。

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