Process for preparing Yb#+[3+] and Cr#+[4+] doped yttrium-aluminium garnet crystal
A yttrium aluminum garnet and crystal technology is applied in the field of tunable laser crystals, which can solve the problems of low luminous efficiency, restrict the development of laser devices, etc., and achieve the effect of improving laser efficiency
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[0016] Example 1.
[0017] Will Yb 2 O 3 , Y 2 O 3 , Al 2 O 3 , Cr 2 O 3 And CaCO 3 High-purity raw materials are weighed according to x=0.05, y=0.0001, z=5y / 3, and the total weight is 1Kg. After mechanically mixing uniformly, use a press machine at 35kg / cm 2 It is pressed into a cake under a pressure of 1500C and then sintered in a neutral nitrogen atmosphere at 1600°C for 15 hours. The furnace is loaded and vacuumed and filled with high-purity nitrogen, and heated to melt for growth. The pulling speed is 1mm / h, and the rotation speed is 15rpm. After growing the crystals, slowly lower to room temperature and take out the crystals. The crystal is blue-green, complete, and good quality.
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[0018] Example 2.
[0019] Will Yb 2 O 3 , Y 2 O 3 , Al 2 O 3 , Cr 2 O 3 And CaCO 3 High-purity raw materials are weighed according to x=0.05, y=0.0005, z=5y / 3, and the total weight is 1Kg. After mechanically mixing uniformly, use a press machine at 20kg / cm 2 It is pressed into a cake under a pressure of 1500C and then sintered in a neutral nitrogen atmosphere at 1300°C for 10 hours. The furnace is loaded and vacuumed and filled with high-purity nitrogen, and heated to melt for growth. The pulling speed is 1mm / h, and the rotation speed is 12rpm. After growing the crystals, slowly lower to room temperature and take out the crystals. The crystal is blue-green, complete, and good quality.
Example Embodiment
[0020] Example 3.
[0021] Will Yb 2 O 3 , Y 2 O 3 , Al 2 O 3 , Cr 2 O 3 And CaCO 3 High-purity raw materials are weighed according to x=0.05, y=0.0005, z=10y / 3, and the total weight is 1Kg. After mechanically mixing uniformly, use a press machine at 40kg / cm 2 It is pressed into a cake under a pressure of 1500C and then sintered in a neutral nitrogen atmosphere at 1400°C for 18h. The furnace is filled with high-purity argon and heated to melt to prepare for growth. The pulling speed is 1.5 mm / h, and the rotation speed is 18 rpm. After growing the crystals, slowly lower to room temperature and take out the crystals. The crystal is blue-green, complete, and good quality.
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