Nonlinear optical crystal and preparation method and application thereof
A nonlinear optics and crystal technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of long growth cycle, high price, and easy deliquescence of crystals.
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Embodiment 1
[0036] Chemical formula Cs 2 CO 3 +2CdO+2H 3 BO 3 →2CsCdBO 3 +CO 2 ↑+3H 2 O↑
[0037] reactant Cs 2 CO 3 , CdO, H 3 BO 3Weigh it into a mortar with a molar ratio of 1:2:2, mix and grind it carefully, then put it into a corundum crucible with an opening of Φ100mm×100mm, put it into a muffle furnace, slowly raise the temperature to 550°C, and keep the temperature constant for 24 hours. Cool to room temperature, take it out and put it into the muffle furnace after the second grinding, then raise the temperature to 650°C, keep the temperature for 24 hours, cool to room temperature, take it out and put it into the muffle furnace after the third grinding, and then raise the temperature to 810°C ℃, constant temperature for 48 hours, take out and grind to obtain CsCdBO 3 polycrystalline powder. The product was subjected to X-ray analysis ( figure 1 ), the resulting X-ray spectrum is consistent with that of CsCdBO 3 The X-ray spectrum obtained after the single crystal is...
Embodiment 2
[0042] Chemical formula 2Cd(NO 3 ) 2 +2CsNO 3 +2H 3 BO 3 →2CsCdBO 3 +6NO 2 ↑+3H 2 O↑+3 / 2O 2 ↑
[0043] The reactant Cd(NO 3 ) 2 , CsNO 3 、H 3 BO 3 and flux Cs 2 CO 3 Weigh and mix directly according to the molar ratio of 1:1:1:4, put it into an open platinum crucible of Φ80mm×80mm, raise the temperature to 745°C, and keep the temperature for 60 hours to obtain CsCdBO 3 solution;
[0044] CaB 3 The solution was cooled down to 715°C, and then the temperature was slowly lowered to room temperature at a rate of 1.5°C / h, and CsCdBO was obtained by spontaneous crystallization. 3 seed crystal;
[0045] will contain CsCdBO 3 The open platinum crucible of the solution was placed in a crystal growth furnace at 745 °C, and the obtained CsCdBO 3 The seed crystal is fixed on the seed crystal rod and the seed crystal is lowered from the top of the crystal growth furnace. The seed crystal is first placed in CsCdBO 3 Preheat the solution on the surface for 10 minutes, and...
Embodiment 3
[0047] Chemical formula 2CdO+Cs 2 O+2H 3 BO 3 →2CsCdBO 3 +3H 2 O↑
[0048] The reactant CdO, Cs 2 O, H 3 BO 3 Put it into a mortar with a molar ratio of 2:1:2, mix and grind it carefully, then put it into a corundum crucible with an opening of Φ100mm×100mm, press it tightly, put it into a muffle furnace, and slowly heat up to 550°C, constant temperature After 24 hours, take out the crucible after cooling. At this time, the sample is relatively loose. Then take out the sample and grind it evenly, then put it in the crucible, keep the temperature in the muffle furnace at 780°C for another 48 hours, take it out, and put it in the mortar CsCdBO can be obtained by mashing and grinding 3 compound;
[0049] The resulting CsCdBO 3 Compound and Flux Bi 2 o 3 Mix at a molar ratio of 1:2, put it into an open platinum crucible of Φ80mm×80mm, raise the temperature to 720°C, and keep the temperature constant for 80 hours to obtain CsCdBO 3 solution;
[0050] CaB 3 The tem...
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