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A kind of guanidine phosphate ultraviolet frequency doubling crystal material and its preparation and application

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 the actual needs, the refraction effect and the SHG intensity decrease, and the BBO birefringence is large, etc., to achieve wide Ultraviolet optical transmission range, strong frequency doubling effect, and simple method

Active Publication Date: 2022-04-05
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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  • A kind of guanidine phosphate ultraviolet frequency doubling crystal material and its preparation and application
  • A kind of guanidine phosphate ultraviolet frequency doubling crystal material and its preparation and application
  • A kind of guanidine phosphate ultraviolet frequency doubling crystal material and its preparation and application

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Experimental program
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Effect test

Embodiment 1

[0029] Preparation of 1#~8# samples

[0030] Mix phosphorus source, guanidine source and water according to a certain ratio to form raw materials. After the raw materials are dissolved, put them in a beaker to obtain colorless lump [C(NH 2 ) 3 ] 6 (PO 4 ) 2 ·3H 2 O crystals.

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

[0032] Table 1 Correspondence between samples, raw materials and synthesis conditions

[0033]

[0034]

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

[0036] The structures of samples 1# to 8# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0037] The single crystal X-ray diffraction was performed on a D8 VENTURE CMOS X-type X-ray single crystal diffractometer from Bruker, Germany. The data collection temperature is 293K, and the diffraction light source is the Mo-Kα r...

Embodiment 2

[0051] Adopt the preparation method similar to embodiment 1, difference is:

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

[0053] (2) The adopted crystallization temperature is 25° C., and the crystallization time is 300 hours.

[0054] After testing, the prepared compound [C(NH 2 ) 3 ] 6 (PO 4 ) 2 ·3H 2 O crystal has a great frequency doubling effect. Under 1064nm wavelength laser irradiation, the frequency doubling signal intensity is about 3.8 times that of KDP crystal; under 532nm wavelength laser irradiation, the frequency doubling signal intensity is about 0.3 times that of BBO crystal.

Embodiment 3

[0056] Adopt the preparation method similar to embodiment 1, difference is:

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

[0058] (2) The adopted crystallization temperature is 20° C., and the crystallization time is 500 hours.

[0059] After testing, the prepared compound [C(NH 2 ) 3 ] 6 (PO 4 ) 2 ·3H 2 O crystal has a great frequency doubling effect. Under 1064nm wavelength laser irradiation, the frequency doubling signal intensity is about 3.8 times that of KDP crystal; under 532nm wavelength laser irradiation, the frequency doubling signal intensity is about 0.3 times that of BBO crystal.

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Abstract

The invention relates to a guanidine phosphate ultraviolet frequency doubling crystal material and its preparation and application. The chemical formula of the guanidine phosphate material is [C(NH 2 ) 3 ] 6 (PO 4 ) 2 ·3H 2 O belongs to the monoclinic crystal system, its space group is Cc, and the unit cell parameters of the guanidine phosphate material are β=91.90~92.20°, α=γ=90°, Z=4. Compared with the existing materials, the guanidine phosphate material of the present invention has a greater frequency doubling effect, and the frequency doubling intensity of the powder is about KH under 1064nm laser irradiation 2 PO 4 3.8 times that of (KDP) crystals; under 532nm laser irradiation, the powder frequency doubling effect intensity is about β‑BaB 2 o 4 0.3 times of the crystal. In addition, the ultraviolet absorption cut-off edge of this material is at 205nm, which has broad application prospects in the fields of laser frequency conversion, photoelectric modulation, and laser signal holographic storage.

Description

technical field [0001] The invention belongs to the technical field of optical crystal materials, and relates to a guanidine phosphate ultraviolet frequency doubling crystal material and its preparation and application. Background technique [0002] The typical feature of the second-order nonlinear optical crystal is the frequency doubling effect (SHG). It is an important photoelectric functional material and has important application prospects in the fields of laser frequency conversion, photoelectric modulation, and laser signal holographic storage. According to the light transmission band and scope of application, inorganic nonlinear optical crystal materials can be divided into nonlinear optical materials in the ultraviolet region, nonlinear optical materials in the visible region and nonlinear optical materials in the infrared region. Currently commercialized nonlinear optical materials in the ultraviolet and visible regions include BBO (β-barium metaborate), CsB 3 o ...

Claims

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Application Information

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