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Guanidine phosphate ultraviolet frequency doubling crystal material, and preparation method and application thereof

A frequency doubling crystal and guanidine phosphate technology, which is applied in the field of guanidine phosphate ultraviolet frequency doubling crystal materials, can solve the problems that nonlinear optical materials are difficult to meet actual needs, CBO is easy to absorb moisture, refraction effect and SHG intensity decrease.

Active Publication Date: 2021-08-31
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commercialized nonlinear optical materials in the ultraviolet region are still difficult to meet the actual needs
For example, the large birefringence of BBO leads to no light-induced refraction effect and the reduction of SHG intensity; CBO is easy to absorb moisture, etc.

Method used

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  • Guanidine phosphate ultraviolet frequency doubling crystal material, and preparation method and application thereof
  • Guanidine phosphate ultraviolet frequency doubling crystal material, and preparation method and application thereof
  • Guanidine phosphate ultraviolet frequency doubling crystal material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation # 1 ~ # 8 samples

[0030] The phosphorus source, and water source guanidine mixed into the raw material in a certain proportion, until starting material was dissolved, and placed in a beaker, to give a colorless massive [C (NH 2 ) 3 ] 6 (Po 4 ) 2 · 3h 2 O crystals.

[0031] Type and ratio in the initial mixture of raw materials, crystallization temperature, crystallization time as shown in Table 1 and the relationship between the sample number.

[0032] Table 1 Sample materials and synthesis conditions with the use of a correspondence

[0033]

[0034]

[0035] Crystal structure analysis # 1 ~ # 8 samples

[0036] Single crystal X-ray diffraction and X-ray diffraction method, a sample # 1 ~ # 8 for structural analysis.

[0037] Where the single-crystal X-ray diffraction on the German company Bruker D8 VENTURE CMOS X X-ray single crystal diffraction. Data collection temperature was 293K, the diffraction light graphite monochromated Mo-Kα ray [Omega] is the ...

Embodiment 2

[0051] Using a similar method of Example 1 was prepared, except that:

[0052] (1) phosphorus source used is phosphoric acid, guanidine carbonate, guanidine source is used, wherein the amount of addition, the phosphorus source, guanidine source satisfies: phosphorus molar ratio of guanidine molecules and water was 1: 3: 150;

[0053] (2) the crystallization temperature employed is 25 ℃, crystallization time was 300 hours.

[0054] After testing, the obtained compound [C (NH 2 ) 3 ] 6 (Po 4 ) 2 · 3h 2 O great SHG crystal, laser irradiation at a wavelength of 1064nm, the signal strength of the frequency is about 3.8 times of KDP crystals; at 532nm wavelength of the laser radiation, the intensity of the signal frequency is about BBO 0.3 times crystals.

Embodiment 3

[0056] Using a similar method of Example 1 was prepared, except that:

[0057] (1) employed as the phosphorus source potassium dihydrogen phosphate, guanidine carbonate, guanidine source is employed, wherein the amount of addition, the phosphorus source, guanidine source satisfying: the molar ratio of phosphorus element and guanidine molecule is 1: 1;

[0058] (2) the crystallization temperature employed is 20 ℃, crystallization time was 500 hours.

[0059] After testing, the obtained compound [C (NH 2 ) 3 ] 6 (Po 4 ) 2 · 3h 2 O great SHG crystal, laser irradiation at a wavelength of 1064nm, the signal strength of the frequency is about 3.8 times of KDP crystals; at 532nm wavelength of the laser radiation, the intensity of the signal frequency is about BBO 0.3 times crystals.

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Abstract

The invention relates to a guanidine phosphate ultraviolet frequency doubling crystal material, and a preparation method and application thereof. The chemical formula of the guanidine phosphate material is [C(NH2)3]6(PO4)2.3H2O, the guanidine phosphate material belongs to a monoclinic system, the space group of the guanidine phosphate material is Cc, and the cell parameters of the guanidine phosphate material are as follows: beta = 91.90-92.20 DEG, alpha = gamma = 90 DEG, and Z = 4. Compared with the existing material, the guanidine phosphate material disclosed by the invention has a relatively large frequency-doubled effect, and the frequency-doubled strength of powder is about 3.8 times of that of a KH2PO4(KDP) crystal under the irradiation of 1064 nm laser; and the frequency-doubled effect intensity of the powder measured under the irradiation of 532nm laser is about 0.3 time of that of the beta-BaB2O4 crystal. In addition, the ultraviolet absorption cutoff edge of the material is 205nm, and the material has wide application prospects in the fields of laser frequency conversion, photoelectric modulation, laser signal holographic storage and the like.

Description

Technical field [0001] The present invention belongs to the technical field optical crystal material, to a guanidine phosphate UV doubling crystal material preparation and application. Background technique [0002] Typical features of second order nonlinear optical crystal having SHG (the SHG), is an important photoelectric functional materials, with important applications in the field of laser frequency conversion, optical modulation laser signal holographic storage. And applicable range based on the light-transmitting band, an inorganic nonlinear optical crystal materials can be divided into a nonlinear optical material ultraviolet region, the visible region of the nonlinear optical material and nonlinear optical materials infrared region. Currently commercialized nonlinear optical material with a ultraviolet and visible region of BBO (β- barium metaborate), CsB 3 O 5 (Cesium borate), LBO (lithium borate), KDP (potassium dihydrogen phosphate), KTP (potassium titanyl phosphate) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B7/04H01S3/109
CPCC30B29/22C30B7/04H01S3/109
Inventor 张弛吴超
Owner TONGJI UNIV
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