Thulium-doped BGSO human eye safety laser crystal and preparation method thereof
A laser crystal, eye-safe technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., to achieve the effects of inhibiting component segregation, improving growth efficiency and application, and simple process equipment
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Embodiment 1
[0024] Embodiment 1: (Tm 0.005 Bi 0.995 ) 4 (Ge 0.1 Si 0.9 ) 3 o 12
[0025] Tm with a purity of not less than 99.99% 2 o 3 , Bi 2 o 3 , GeO 2 and SiO 2 The powder was dried in a drying oven at 120°C for 3 hours, and then according to the chemical formula (Tm 0.005 Bi 0.995 ) 4 (Ge 0.1 Si 0.9 ) 3 o 12 Carefully calculate the mass required for each raw material and weigh it accurately; grind the weighed raw material for 60 minutes to mix the raw materials evenly, then sinter at 700°C for 3 hours to obtain the pre-calcined material, and then grind the pre-calcined material for 60 minutes again, After uniformity, it was sintered again at 800°C for 6 hours to obtain polycrystalline thulium-doped bismuth silicon germanate.
[0026] The BSO single crystal processed into a cylindrical shape, the crystal orientation is , and the size is Ф10×50mm is used as the seed crystal, and the thulium-doped bismuth silicon germanate polycrystalline material and the seed crystal...
Embodiment 2
[0027] Embodiment 2: (Tm 0.02 Bi 0.98 ) 4 (Ge 0.5 Si 0.5 ) 3 o 12
[0028] Tm with a purity of not less than 99.99% 2 o 3 , Bi 2 o 3 , GeO 2 and SiO 2 The powder was dried in a drying oven at 120°C for 4 hours, and then according to the chemical formula (Tm 0.02 Bi 0.98 ) 4 (Ge 0.5 Si 0.5 ) 3 o 12Carefully calculate the mass required for each raw material and weigh it accurately; grind the weighed raw materials for 60 minutes to mix the raw materials evenly, then sinter at 750°C for 2 hours to obtain pre-fired materials, and then grind the pre-fired materials for 60 minutes again, After uniformity, it was sintered again at 900°C for 4 hours to obtain a polycrystalline material of bismuth silicon germanate doped with thulium. The unprocessed crystal sample is as follows: figure 1 shown.
[0029] The BSO single crystal processed into a cylindrical shape, the crystal orientation is , and the size is Ф10×50mm is used as the seed crystal, and the thulium-doped b...
Embodiment 3
[0030] Embodiment 3: (Tm 0.1 Bi 0.9 ) 4 (Ge 0.9 Si 0.1 ) 3 o 12
[0031] Tm with a purity of not less than 99.99% 2 o 3 , Bi 2 o 3 , GeO 2 and SiO 2 The powder was dried in a drying oven at 120°C for 3 hours, and then according to the chemical formula (Tm 0.1 Bi 0.9 ) 4 (Ge 0.9 Si 0.1 ) 3 o 12 Carefully calculate the mass required for each raw material and weigh it accurately; grind the weighed raw material for 60 minutes to mix the raw materials evenly, then sinter at 700°C for 4 hours to obtain the pre-calcined material, and then grind the pre-calcined material for 60 minutes again, After uniformity, it was sintered again at 850°C for 4 hours to obtain thulium-doped bismuth silicon germanate polycrystalline material, and the emission spectrum was as follows: figure 2 shown.
[0032] The BGO single crystal processed into a cylindrical shape with a crystal orientation of and a size of Ф10×50mm is used as a seed crystal, and the thulium-doped bismuth silic...
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