Deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate and preparation method and application thereof

A technology of nonlinear optics and zinc fluorophosphate, applied in the fields of nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of low frequency multiplication coefficient of crystals, long time consumption, high energy consumption, etc., and achieve good thermal stability , Simple operation, and the effect of reducing energy consumption

Active Publication Date: 2019-05-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to statistics, most of the methods for synthesizing these phosphates are solid-phase methods, which consume a lot of energy and take a long time, and many crystals have problems such as low frequency multiplication coefficients or small band gaps.

Method used

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  • Deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate and preparation method and application thereof
  • Deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate and preparation method and application thereof
  • Deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] ZnCl 2 , Ba(CH 3 COO) 2 , LiF, H 3 PO 4 , and triethylamine are mixed in a molar ratio of 0.5:1:6:21.9:14.9, placed in a high-pressure hydrothermal reactor, placed in an oven at 210°C, and kept at a constant temperature for 5 days. After natural cooling to room temperature, the product was washed to obtain colorless and transparent crystals. Select one and carry out single crystal X-ray diffraction test. After analysis, the single crystal data is obtained, which belongs to the non-centrosymmetric crystal structure, and is drawn into a crystal structure diagram. See figure 2 , and then the compound was ground into a powder to measure the powder XRD pattern see figure 1 , the measured spectrum is consistent with the theoretically calculated spectrum of the single crystal.

Embodiment 2

[0025] ZnCl 2 , Ba(NO 3 ) 2 , NaF, H 3 PO 4 , Ethylenediamine is mixed in a molar ratio of 1:2:4:21.9:14.9, placed in a high-pressure hydrothermal reactor, placed in an oven at 180°C, and kept at a constant temperature for 3 days. After natural cooling to room temperature, the product was washed to obtain colorless and transparent crystals. After powder X-ray diffraction testing, UV-Vis diffuse reflectance spectroscopy testing, see image 3 , the transmittance at 190nm is 46%, it can be seen that its cut-off absorption edge is below 190nm, which belongs to the deep ultraviolet region, so it can be applied to the laser field of coherent light output in the deep ultraviolet region.

Embodiment 3

[0027] Zn(CH 3 COO) 2 , BaCl 2 , KF, H 3 PO 4 , Tri-n-propylamine is mixed in a molar ratio of 1:1:6:14.6:14.9, placed in a high-pressure hydrothermal reactor, placed in an oven at 240°C, and kept at a constant temperature for 3 days. After natural cooling to room temperature, the product was washed to obtain colorless and transparent crystals. Take 1g sample to screen the particle size grouping and carry out the second harmonic effect test, and use potassium dihydrogen phosphate (KH phosphate) of the same particle size 2 PO 4 , KDP) as a standard sample, get the phase matching diagram see Figure 4 , as the size of the particles increases, the intensity increases accordingly, reaching 0.25 times the KDP intensity at 150-200 μm.

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Abstract

The invention relates to nonlinear optical crystals, in particular to deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate and a preparation method and application thereof. The deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate has a chemical formula of BaZnPO4F, with a crystal space group of Pna21 (No. 33), cell parameters and cell volume shown in the description, and molecular weight of Mr=316.68. The deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate is prepared by adding a barium source, a fluorine source, a zinc source, a phosphorus source and an organic solvent in a hydrothermal reactor, heating the hydrothermal reactor, cooling to room temperature to obtain a product, and washing the product; the deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate prepared is a colorless transparent target crystal. The deep-ultraviolet nonlinear optical crystal barium zinc fluorophosphate is applicable to the preparation of double frequency conversion nonlinear optical devices for deep-ultraviolet ranges.

Description

technical field [0001] The invention relates to a nonlinear optical crystal, in particular to a deep ultraviolet nonlinear optical crystal barium zinc fluoride phosphate, a preparation method and application thereof. Background technique [0002] Solid-state lasers with nonlinear optical crystals as the core components have been widely used in various fields, such as laser medicine, optical communication and signal processing, laser micromachining, advanced scientific instruments and laser guidance, etc., which are indispensable in the fields of production, life and medical treatment. missing materials. Although there are many known nonlinear optical crystals and each has its own advantages, few crystals can meet all the requirements of nonlinear optical crystals, especially deep ultraviolet nonlinear optical crystal materials are seriously scarce. KBe 2 BO 3 f 2 (KBBF) crystals are currently the only nonlinear optical crystals that can be directly frequency-multiplied t...

Claims

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Application Information

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IPC IPC(8): C30B29/14C30B7/10G02F1/355
Inventor 黄雅熙唐霞艳
Owner XIAMEN UNIV
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