Nonlinear beryllium borate fluoride (BBF) optical crystal as well as preparation method and application thereof
A technology of nonlinear optics and beryllium fluoroborate, applied in the field of new optoelectronic functional materials and growth, can solve the problems of low crystal birefringence, limited phase matching range, parallel arrangement, etc., and achieve the effect of good chemical stability
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Embodiment 1
[0055] Preparation of beryllium fluoroborate compound by hydrothermal method
[0056] Raw materials used:
[0057]
[0058] Its chemical reaction equation is:
[0059] 2BeO+H 3 BO 3 +NH 4 F = Be 2 BO 3 F+NH 3 +2H 2 o
[0060] The specific operation steps are as follows: after weighing the above-mentioned raw materials according to the above-mentioned dosage in the operation box, put them into a 23ml hydrothermal kettle, pour 10ml of distilled water, put the hydrothermal kettle into the oven, and slowly heat the oven to 220°C , keep the temperature for 7 days, and then lower the temperature to 30°C at a rate of 5°C per hour. After cooling, wash the sample with distilled water and alcohol to obtain Be 2 BO 3 F compound. This product is carried out X-ray analysis, gained collection of illustrative plates ( image 3 ) and the X-ray pattern of BBF single crystal ground into powder ( Figure 5 ) are consistent.
Embodiment 2
[0062] Growth of Beryllium Fluoroborate Single Crystal by Hydrothermal Method
[0063] The crystal growth device is a resistance wire heating furnace, and the temperature control equipment is a 908PHK20 programmable automatic temperature controller.
[0064] Raw materials used:
[0065]
[0066] The specific operation steps are as follows: choose H 3 BO 3 --NH 4 F mineralizer system, after weighing the above raw materials according to the above dosage in the operation box, put them into a hydrothermal kettle with a capacity of 35ml, then pour 20ml of distilled water, and put the reaction kettle into the resistance wire heating furnace Slowly raise the temperature to 250°C / 330°C (upper temperature / lower temperature), and keep the temperature constant for 12 days. Then cool down to 50°C at a rate of 5°C per hour, turn off the furnace, wash the sample with water and alcohol after cooling, and obtain a beryllium fluoroborate optical crystal with a size of about 1.2×1.2×0.8m...
Embodiment 3
[0068] Growth of Beryllium Fluoroborate Single Crystal by Hydrothermal Method
[0069] The crystal growth device is a resistance wire heating furnace, and the temperature control equipment is a 908PHK20 programmable automatic temperature controller.
[0070] Raw materials used:
[0071]
[0072] The specific operation steps are as follows: choose H 3 BO 3 --NH 4 F mineralizer system, after weighing the above raw materials according to the above dosage in the operation box, put them into a hydrothermal kettle with a capacity of 2000mL, then pour 1200mL of distilled water, put the reaction kettle into a resistance wire heating furnace and slowly heat up to 250°C / 330°C (upper temperature / lower temperature), constant temperature for 40 days. Then cool down to 50°C at a rate of 5°C per hour, turn off the furnace, wash the sample with water and alcohol after cooling, and obtain a beryllium fluoroborate optical crystal with a size of about 4.5×4.5×3mm.
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