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Compound calcium monohydroxypentaborate monohydrate nonlinear optical crystal and its preparation method and use

A calcium hydroxypentaborate, nonlinear optics technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., to achieve the effects of simple preparation, short growth period, and simple operation

Active Publication Date: 2016-02-10
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above-mentioned borate crystals have been discovered, all of the above-mentioned crystals have some shortcomings, so finding new nonlinear optical crystals is still a very important work

Method used

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  • Compound calcium monohydroxypentaborate monohydrate nonlinear optical crystal and its preparation method and use
  • Compound calcium monohydroxypentaborate monohydrate nonlinear optical crystal and its preparation method and use
  • Compound calcium monohydroxypentaborate monohydrate nonlinear optical crystal and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] With the chemical reaction formula 2CaCl 2 +5H 3 BO 3 → Ca 2 B 5 o 9 OH·H 2 O+4Cl - +4H 2 O+4H + Prepare crystals:

[0044] a. Mole ratio is CaCl 2 :H 3 BO 3 =1:5, the CaCl 2 Add to the polytetrafluoroethylene liner of a 23mL autoclave, add H 3 BO 3 , and then add 12mL of deionized water to make it fully mixed to obtain a mixed solution;

[0045] b. Add 1 mL of LiOH solution with a mineralizer concentration of 2 mol / L to the mixed solution of step a and mix, and the volume ratio of the mineralizer to the mixed solution is 1:12;

[0046] c. Tighten the polytetrafluoroethylene-lined lid with the mixed solution in step b, put it into a clean and pollution-free autoclave of corresponding volume, and tighten the piston of the reactor;

[0047] d. Place the autoclave in step c in an incubator, raise the temperature to 180°C at a rate of 20°C / h, keep the temperature constant for 10 days, and then cool to room temperature at a cooling rate of 2°C / h;

[0048] e....

Embodiment 2

[0050] According to the chemical reaction formula 2Ca(CH 3 COO) 2 ·H 2 O+5H 3 BO 3 → Ca 2 B 5 o 9 OH·H 2 O+4CH 3 COO - +4H 2 O+4H + Prepare crystals:

[0051] a. Molar ratio is Ca(CH 3 COO) 2 ·H 2 O:H 3 BO 3 =1:4, Ca(CH 3 COO) 2 ·H 2 O was added to the polytetrafluoroethylene liner of an autoclave with a volume of 80 mL, and H 3 BO 3 , and then add 40mL of deionized water to make it fully mixed to obtain a mixed solution;

[0052] b. Add 1.0 mL of NaOH solution with a mineralizer concentration of 2 mol / L to the mixed solution of step a and mix, and the volume ratio of the mineralizer to the mixed solution is 1:40;

[0053] c. Tighten the polytetrafluoroethylene-lined lid with the mixed solution in step b, put it into a clean and pollution-free autoclave of corresponding volume, and tighten the piston of the reactor;

[0054] d. Place the autoclave in step c in an incubator, raise the temperature to 200°C at a rate of 30°C / h, keep the temperature constant f...

Embodiment 3

[0057] With the chemical reaction formula 2CaSO 4 +5H 3 BO 3 → Ca 2 B 5 o 9 OH·H 2 O+2SO 4 2- +4H 2 O+4H + Prepare crystals:

[0058] a. Mole ratio is CaSO 4 :H 3 BO 3 =1:8, the CaSO 4 Add to the polytetrafluoroethylene liner of a 23mL autoclave, add H 3 BO 3 , and then add 10 mL of deionized water to make it fully mixed to obtain a mixed solution;

[0059] b. Adding 0.5mL of KOH solution with a mineralizer concentration of 2mol / L to the mixed solution of step a and mixing, the volume ratio of the mineralizer to the mixed solution is 1:20;

[0060] c. Tighten the polytetrafluoroethylene-lined lid with the mixed solution in step b, put it into a clean and pollution-free autoclave of corresponding volume, and tighten the piston of the reactor;

[0061] d. Place the high-pressure reactor in step c in a constant temperature box, raise the temperature to 210°C at a rate of 60°C / h, keep the temperature constant for 20 days, and then lower it to room temperature at a...

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Abstract

The invention relates to a compound calcium monohydroxypentaborate monohydrate nonlinear optical crystal and its preparation method and use. The crystal has a chemical formula of Ca2B5O9OH.H2O, has molecular weight of 313.23, belongs to a monoclinic system, has a space group Cc and cell parameters of a=10.780(3)A, b=6.5110(19)A, c=12.339(4)A, beta=115.057(19) degree and V=784.6(4)A3. Through a hydrothermal method, the compound calcium monohydroxypentaborate monohydrate nonlinear optical crystal is obtained by program cooling or natural cooling. The crystal has powder frequency-doubling effect which is 2 times KDP(KH2PO4), has a UV cutoff wavelength of 190nm or less and can be used as a deep UV nonlinear optical crystal. The nonlinear optical crystal has the advantages of simple operation, low cost, low raw material toxicity, short production period and stable physicochemical properties. The nonlinear optical crystal can be widely used in nonlinear optical devices such as a frequency doubling generator, an upper frequency converter, a lower frequency converter or an optical parametric oscillator.

Description

technical field [0001] The present invention relates to the non-linear optical crystal of compound monohydric calcium pentaborate and its preparation method and application. The chemical formula of the crystal is Ca 2 B 5 o 9 OH·H 2 O, the nonlinear optical device fabricated using the crystal. The invention belongs to the field of inorganic chemistry, and also belongs to the field of material science and optics. Background technique [0002] In 1961, Franken first discovered the laser frequency doubling phenomenon of quartz crystals. The discovery of this phenomenon not only marked the birth of nonlinear optics, but also strongly promoted the rapid development of nonlinear optics crystal materials. Therefore, nonlinear optics is a subject emerging after the generation of laser light. It belongs to a branch of optoelectronics, and the corresponding nonlinear optical crystal material is an important part of optoelectronic materials. With the in-depth study of nonlinear op...

Claims

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Application Information

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IPC IPC(8): C30B29/10C30B7/10G02F1/355G02F1/37G02F1/39
Inventor 潘世烈蒋相站韩健董孝宇王西安
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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