Yb, Gd co-doped barium fluoride crystal and preparation method thereof
A barium fluoride and crystal technology, applied in the field of optoelectronic functional materials, can solve problems such as efficiency and repetition frequency that cannot meet application requirements, and achieve the advantages of crystal growth, reduction of unit energy output cost, and reduction of pumping peak power and quantity. Effect
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[0018] Example 1:
[0019] Press YbF 3 , GdF 3 , BaF 2 The mol ratio is 0.01:0.1:1 for compounding. After the raw materials are fully mixed, they are dehydrated at 150°C for 15 hours in a drying box, and then uniformly pressed into blocks. Use a platinum crucible with a diameter of 30mm and a length of 150mm with a pointed bottom. The deoxidizer is polytetrafluoroethylene. The melt temperature is 960°C, and the temperature is kept constant for 6 hours. The crystal growth temperature gradient is set to 30°C / cm, and the crucible is lowered at a speed of 1mm / hour, and after the growth is completed, it is cooled to room temperature at a cooling rate of 20°C / hour.
Example Embodiment
[0020] Example 2:
[0021] In Example 1, press YbF 3 , GdF 3 , BaF 2 The molar ratio is 0.02:0.1:1 for batching, and the crystal is processed into 10×10×1mm after taking out 3 Spectral test of the sample, the absorption spectrum is as attached figure 1 As shown, the fluorescence spectrum is as attached figure 2 Shown.
Example Embodiment
[0022] Example 3:
[0023] Press YbF 3 , GdF 3 , BaF 2 The mol ratio is 0.02:0.2:1 for compounding, after fully mixing, dehydration is carried out at 160°C for 10 hours in a drying box, and then uniformly pressed into a block. The crucible uses a 30*30*180 flat bottom crucible and BaF 2 The crystal is used as a seed crystal, the crucible is vacuum sealed, the deoxidizer is rubber, the crucible is lowered at a speed of 1.5 mm / hour, and after the growth is completed, it is cooled to room temperature at a temperature drop rate of 30° C. / hour.
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