Preparation method and application of barium-cesium borate nonlinear optical crystal
A technology of nonlinear optics and nonlinear crystals, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of low crystal transmittance, small birefringence, inability to perform nonlinear optical frequency conversion, etc.
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Embodiment 1
[0018] Growth of CsBaB by crucible drop method 9 o 15 Crystal:
[0019] a. CsF, BaCO 3 and B 2 o 3 After weighing according to the molar ratio of 1:1:6, carefully grind and mix evenly, put the sample into a quartz tube to vacuumize and seal;
[0020] b. Place the quartz tube in step a in the crucible lowering furnace, raise the temperature to 650°C, keep it warm for 20 hours, adjust the position of the container so that the spontaneous nucleation temperature is at 630°C, and then slowly lower the container at a speed of 0.05mm / h, At the same time, keep the growth temperature constant. After the growth is over, reduce the temperature of the growth furnace to 30°C, take out the quartz tube, and obtain a CsBaB with a size of Φ4mm×5mm×8mm. 9 o 1 Nonlinear Optical Crystals.
Embodiment 2
[0022] Growth of CsBaB by crucible drop method 9 o 15 Crystal:
[0023] a. Add Cs 2 CO 3 、BaCO 3 and B 2 o 3 After weighing according to the molar ratio of 2:2:11, carefully grind and mix evenly, put the sample into a graphite crucible to evacuate and seal;
[0024] b. Place the graphite crucible in step a in the crucible lowering furnace, raise the temperature to 700°C, keep it warm for 22 hours, adjust the position of the container so that the inoculation temperature is at 680°C, and then slowly lower the container at a speed of 1 mm / h. At the same time, Slowly cool down at a rate of 1°C / h. After the growth is over, lower the temperature of the growth furnace to 30°C, take out the graphite crucible, and obtain CsBaB with a size of Φ5mm×7mm×8mm 9 o 15 Nonlinear Optical Crystals.
Embodiment 3
[0026] Growth of CsBaB by crucible drop method 9 o 15 Crystal:
[0027] a. CsF, BaCO 3 and H 3 BO 3 After weighing at a molar ratio of 1.5:1:10, carefully grind and mix evenly, put the sample into a platinum crucible to vacuumize and seal;
[0028] b. Place the platinum crucible in step a in the crucible lowering furnace, raise the temperature to 800°C, keep it warm for 30 hours, adjust the position of the container so that the spontaneous nucleation temperature is at 750°C, and then slowly lower the container at a speed of 0.5mm / h, At the same time, the temperature is slowly lowered at a rate of 2°C / h. After the growth is completed, the temperature of the growth furnace is lowered to 30°C, and the platinum crucible is taken out to obtain a CsBaB with a size of Φ6mm×9mm×15mm. 9 o 15 Nonlinear Optical Crystals.
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