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Lutetium fluoroselenite frequency doubling crystal as well as preparation and application thereof

A technology of lutetium fluoroselenite and lutetium selenite, applied in the field of double frequency crystal of lutetium fluoroselenite and its preparation and application

Active Publication Date: 2020-10-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no research on the combination of lutetium, selenium, fluorine, etc. to enhance the performance of materials such as frequency doubling coefficient

Method used

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  • Lutetium fluoroselenite frequency doubling crystal as well as preparation and application thereof
  • Lutetium fluoroselenite frequency doubling crystal as well as preparation and application thereof
  • Lutetium fluoroselenite frequency doubling crystal as well as preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of 1#~8# samples

[0039] Mix lutetium, selenium, fluorine and water in a certain proportion to form raw materials, seal them in a polytetrafluoroethylene-lined hydrothermal reaction kettle, heat up to the crystallization temperature, and after a period of constant temperature, lower the system temperature at a certain rate. Slowly lower to room temperature, filter and wash to obtain the colorless needle-like Lu 3 F(SeO 3 ) 4 crystals.

[0040] The relationship between the types and proportions of raw materials in the initial mixture, crystallization temperature, crystallization time and sample number is shown in Table 1.

[0041] Table 1 Correspondence between samples, raw materials and synthesis conditions

[0042]

[0043]

[0044] Crystal structure analysis of samples 1#~8#

[0045] The structures of samples 1# to 8# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0046] The single crystal X-ray diffraction w...

Embodiment 2

[0065] Adopt the preparation method similar to embodiment 1, difference is:

[0066] (1) The lutetium element that adopts is lutetium oxide, the selenium element that adopts is selenium dioxide, and the fluorine element that adopts is hydrofluoric acid, and wherein, the mol ratio of the lutetium element, selenium element, hydrofluoric acid and water in the initial mixture is Lu:Se:F:water=1.5:1:10:50;

[0067] (2) The adopted crystallization temperature is 220° C., and the crystallization time is 60 hours.

[0068] After testing, the obtained target product Lu 3 F(SeO 3 ) 4 The crystal has a large frequency doubling effect, and under 1064nm wavelength laser irradiation, the frequency doubling signal intensity is about 2.5 times that of the KDP crystal.

Embodiment 3

[0070] Adopt the preparation method similar to embodiment 1, difference is:

[0071] (1) The lutetium element used is lutetium fluoride, the selenium element used is selenium dioxide, and the fluorine element used is hydrofluoric acid, wherein the molar ratio of lutetium element, selenium element, hydrofluoric acid and water in the initial mixture Satisfy: Lu:Se:F:water=1.5:1:10:50;

[0072] (2) The adopted crystallization temperature is 230° C., and the crystallization time is 78 hours.

[0073] After testing, the obtained target product Lu 3 F(SeO 3 ) 4 The crystal has a large frequency doubling effect. Under 1064nm wavelength laser irradiation, the frequency doubling signal intensity is about 2.5 times that of KDP crystal.

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Abstract

The invention relates to a lutetium fluoroselenite frequency doubling crystal as well as preparation and application thereof. The chemical formula of the crystal material is Lu3F (SeO3) 4, the crystalmaterial belongs to a trigonal system, the space group is P63, and the cell parameters are as follows: a = 9.7-9.9 angstroms, b = 9.7-9.9 angstroms, c = 6.9-7.1 angstroms, alpha = beta = 90 degrees,gamma = 120 degrees and Z = 2. Compared with the prior art, the compound Lu3F (SeO3) 4 prepared by the preparation method disclosed by the invention has the advantages that under the irradiation of 1064nm laser, the frequency multiplication intensity of the powder is about 2.5 times that of a KH2PO4 (KDP) crystal, phase matching can be achieved under laser irradiation of the frequency, and the method has a wide application prospect in the fields of laser frequency conversion, photoelectric modulation, laser signal holographic storage and the like.

Description

technical field [0001] The invention belongs to the technical field of nonlinear optical crystal materials, and relates to a lutetium fluoride selenite frequency doubling crystal 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. [0003] Currently commercialized nonlinear optical materials include BBO (β-barium metaborate), LBO (lithium borate), KDP (potassium dihydrogen phosphate), and KTP (potassium titanyl phosphate). With the development of laser technology and the emergence of tunable lasers, nonlinear optical devices have developed rapidly, and laser frequency doubling, frequency mixing, parametric oscillation and amplification; electro-optical modul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B7/10G02F1/355
CPCC30B7/10C30B29/46G02F1/3551
Inventor 张弛吴超林霖
Owner TONGJI UNIV
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