CN106544728B - A kind of ultraviolet crystalline material Ba [BO (OH)2] F preparation method and the usage - Google Patents

A kind of ultraviolet crystalline material Ba [BO (OH)2] F preparation method and the usage Download PDF

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CN106544728B
CN106544728B CN201610925083.4A CN201610925083A CN106544728B CN 106544728 B CN106544728 B CN 106544728B CN 201610925083 A CN201610925083 A CN 201610925083A CN 106544728 B CN106544728 B CN 106544728B
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宋俊玲
郭钿烁
张弛
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Jiangnan University
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    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B5/00—Single-crystal growth from gels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/355—Non-linear optics characterised by the materials used
    • G02F1/3551—Crystals

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Abstract

This application discloses a kind of new ultra-violet crystalline material, preparation method and application.The chemical formula of the crystalline material is Ba [BO (OH)2] F, belong to tetragonal crystal system, space group P-4m2, cell parameter isα=β=γ=90 °, Z=4.The crystalline material has second nonlinear frequency-doubled effect, about the 0.8 of KDP crystal times.In addition, the crystalline material penetrates range with wider, it is about 330nm that UV transmission, which ends side, is had wide practical use in fields such as second nonlinear optic, Electro-optical Modulation, optical communication information processings.

Description

A kind of ultraviolet crystalline material Ba [BO (OH)2] F preparation method and the usage
Technical field
This application involves a kind of novel second nonlinear ultraviolet optics crystalline material and its synthetic methods.
Background technique
Second-order non-linear optical crystal is a kind of important photoelectric functional material, this crystalloid has frequency-doubled effect (SHG), The energy that can change laser is widely applied in terms of frequency doubling device, electro-optical modulation and Hologram Storage.There is the non-heart The alkali or alkaline earth metal borate of structure has wide transmission wave band, can be extended to ultraviolet or even dark purple exterior domain (λ < 200nm, Eg > 6.2eV), attract the broad interest of domestic and international research worker, research hotspot is mainly in same one at present The synergistic effects such as alkali or alkaline earth metal and halogen fluorine atom are introduced in system to improve the band gap of compound, thus by material Expand to dark purple exterior domain through wave band.However be widely used in dark purple outskirt in the market and be able to achieve frequency-doubled effect, Only KBe at present2BO3F2(being abbreviated as KBBF) an example, most short output wavelength, which may be implemented, in KBBF crystalline material can reach 179.4nm.The preparation of these materials is largely high temperature process heat at present, and is had in raw materials of compound containing hypertoxic element Beryllium, and pure phase is difficult to prepare, nonlinear factor also needs to be further increased.
The application further widens the research of ternary borates system, for the first time will using the synthetic method of surfactant heat Alkaline-earth metal and F-Ion is introduced into borate salt system simultaneously, has obtained novel ternary borates Ba [BO (OH)2] F, preparation Method is simple, and synthesis temperature is low and has higher second order nonlinear coefficient, and preparation method is not reported so far with related work.Ba [BO(OH)2] F compound has second nonlinear performance and wide transparency range, it is a kind of novel second order there are application value Non-linear optical crystal material.
Summary of the invention
According to the one aspect of the application, a kind of new ultra-violet crystalline material is provided, which has biggish times Frequency effect, about the 0.8 of KDP crystal times.In addition, the crystalline material penetrates range with wider, UV transmission ends side About 330nm has wide practical use in fields such as nonlinear optics, electro-optical modulation, optic communication processing.
The crystalline material, which is characterized in that chemical formula is Ba [BO (OH)2] F, belong to tetragonal crystal system, space group P- 4m2, cell parameter are a=b=5.0~5.1C=13.0~13.1α=β=γ=90 °, Z=4.
Preferably, the cell parameter of the crystalline material is a=b=4.3101~4.314C=12.91~13.01Z=4, unit cell volume are V=239~241
Inorganic compound Ba [the BO (OH)2] F crystal structure it is as shown in Figure 1.Each Ba atom and 4 O and 4 F The BaO that atom connects into4F4Polyhedron, each B atom connect the BO to be formed with 3 O atoms3Planar delta structure, each BO3 Unit connects 3 Ba atoms, is connected with each other by total vertex, forms [Ba (BO (OH) in (001) plane2)]∞ +The honeycomb of composition Shape structure, F ion link [Ba (BO (OH) by Ba-F-Ba2)]∞ +Layer and then formation double-layer structure, can regard that F ion is pressed from both sides as In [Ba (BO (OH)2)]∞ +Between.The predominantly planar delta to work in this structure to compound second order nonlinear effect BO3Group.
According to the another aspect of the application, the preparation method of the crystalline material is provided, which is characterized in that use surface The preparation of activating agent thermal method, the initial gel mixture that barium source, boron source, Fluorine source, surfactant and water are mixed to form, in 160 Crystallization obtains at~240 DEG C.
Preferably, in the initial gel mixture, in the initial gel mixture, barium element, boron element, fluorine member Element, surfactant, water and acetonitrile molar ratio be Ba:B:F: surfactant: water: acetonitrile=0.5~10:1.0~20: 0.05~2:200~1000:200~1000.It is further preferred that in the initial gel mixture, barium element, boron element, The molar ratio of fluorine element, water and acetonitrile is Ba:B:F: water: acetonitrile=1~5:2.0~10:1.0~10:300~800:300~ 800.It is further preferred that in the initial gel mixture, the molar ratio of barium element, boron element, fluorine element, water and acetonitrile For Ba:B:F: water: acetonitrile=1~1.5:2~4:1.5~4:450~500:450~500.
Preferably, the crystallization temperature is 180~220 DEG C, and crystallization time is no less than 48 hours.
Preferably, the crystallization time is 48~240 hours.
Preferably, at least one of the optional barium carbonate of selected barium source, barium nitrate, barium monoxide, barium acetate, barium metaborate.
Preferably, the boron source optionally from boric acid, boric anhydride, lithium metaborate, kodalk, potassium metaborate, magnesium metaborate, At least one of calcium metaborate, barium metaborate, lead borate.
Preferably, the Fluorine source optionally from the fluorate such as hydrofluoric acid solution, sodium fluoride, potassium fluoride, magnesium fluoride at least It is a kind of.
Preferably, the surfactant isZwitterionic surfactantSuch as disodium ethylene diamine tetraacetate, glycine betaine, ammonia Base acid type, at least one of dodecyltriethanolamine sulfate (salt).
Preferably, the barium source and boron source come from same compound barium metaborate, i.e. barium metaborate is both barium source and boron Source.
According to the another aspect of the application, provide a kind of laser frequency converter, containing any of the above-described crystalline material or The crystalline material as prepared by any of the above-described method.
According to the another aspect of the application, the application method of the laser frequency converter is provided, for being by wavelength 1.064 μm and 532nm of laser beam is with two frequencys multiplication or frequency tripling harmonic wave.
The beneficial effect that the present invention can generate includes at least:
(1) this application provides a kind of novel crystal material, crystalline material has biggish frequency-doubled effect, and about KDP is brilliant 0.8 times of body.In addition, the crystalline material penetrates range with wider, it is about 190nm that UV transmission, which ends side, non-thread The fields such as property optics, Electro-optical Modulation, Preset grating information processing have wide practical use.
(2) this application provides the preparation methods of above-mentioned crystalline material, using the surfactant thermal synthesis of mild condition Method, in a low temperature of 160~240 DEG C, by hydrothermal crystallizing, can high yield obtain high-purity sample.Method is simple, item Part is mildly advantageously implemented large-scale industrial production.
(3) this application provides application above-mentioned material laser frequency converter, can be used for by wavelength be 1.064 μm and The laser beam of 532nm is with two frequencys multiplication or frequency tripling harmonic wave.
Detailed description of the invention
Fig. 1 is the inorganic compound Ba [BO (OH)2] F crystal structure schematic diagram.
Fig. 2 is the X ray diffracting spectrum of sample 1#；Wherein (a) is the crystal knot parsed according to single crystal X-ray diffraction Structure, the X ray diffracting spectrum being fitted；It (b) is that sample 1# pulverizes the map that last X-ray diffraction tests.
Fig. 3 is the ultra-violet absorption spectrum of sample 1#.
Fig. 4 is that the diffusing reflection of sample 1# is absorbed through spectrum.
Fig. 5 is the infrared through spectrum of sample 1#.
Specific embodiment
Below with reference to embodiment, the application is further described.It should be understood that these embodiments be merely to illustrate the application without For limiting scope of the present application.In the following examples, the experimental methods for specific conditions are not specified, usually according to normal condition or According to the normal condition proposed by manufacturer.
The preferred Ba of inorganic compound [BO (OH) is prepared as one2] F preferred embodiment, typical method is as follows: will Raw material Ba (NO3)2、H3BO3, NaF, disodium ethylene diamine tetraacetate (EDTA-Na), water and acetonitrile be sealed in hydrothermal reaction kettle into Row hydro-thermal reaction, reaction temperature are 180~240 DEG C, and the reaction time is 1~10 day, and then slow cooling is to 30 DEG C, cooling rate It is 0.5~30 DEG C/day, filtering cleaning can be obtained the Ba [BO (OH) of colorless plate2] F crystal.
1 sample preparation of embodiment
Barium source, boron source, Fluorine source, disodium ethylene diamine tetraacetate, water and acetonitrile are uniformly mixed according to a certain percentage and obtained just Initial gel mixture is sealed in the hydrothermal reaction kettle of the polytetrafluoroethyllining lining of 30mL, is put into case by beginning gel mixture In formula resistance furnace, under crystallization temperature crystallization for a period of time after, through filtering, cleaning, drying, obtain colorless plate Ba [BO (OH)2] F crystal prototype.The type and proportion of raw material, crystallization temperature, crystallization time and sample number into spectrum in initial gel mixture Relationship it is as shown in table 1.
The relationship of table 1 sample synthesis condition and sample number into spectrum
The crystallographic structural analysis of 2 sample of embodiment
Using single crystal X-ray diffraction and powder x-ray diffraction method, structure elucidation is carried out to sample 1#~10#.
Wherein single crystal X-ray diffraction is enterprising in U.S. Agilent company SuperNova CCD type X-ray single crystal diffractometer Row.Crystalline size is 0.12 × 0.05 × 0.02mm3；Data collection temperature is 293K, and diffraction light sources are graphite monochromatised Mo- K alpha ray (λ=0.71073), scanning mode is ω -2 θ；Data carry out absorption correction processing using Multi-Scan method. Structure elucidation is completed using SHELXTL-97 program bag；The position that heavy atom is determined with direct method is obtained with poor Fourier synthetic method To remaining atomic coordinates；With based on F2All atoms of complete matrix least square method refine coordinate and anisotropy thermal parameter.
Powder x-ray diffraction carries out on the x-ray powder diffraction instrument of Japanese RIGAKU company Miniflex II type, surveys Strip part is fixed target monochromatic source Cu-K α, wavelength 1.540598Voltage and current is 30kV/15A, slit DivSlit/ RecSlit/SctSlit is respectively 1.25deg/0.3mm/1.25deg, and 5-85 ° of scanning range, 0.02 ° of scanning step.
Wherein, single crystal X-ray diffraction is the results show that sample 1#~10# chemical structural formula having the same and crystal structure, Chemical formula is Ba [BO (OH)2] F, belong to tetragonal crystal system, space group P-4m2, cell parameter is a=b=5.0~5.1c =13.0~13.1α=β=γ=90 °, Z=4.
Using sample 1# as Typical Representative, crystal structural data is a=b=4.3104 ± 0.0005C=12.9504 ±0.002α=β=γ=90 °, Z=4, unit cell volume are V=240.61 ± 0.02Each atomic coordinates of sample 1# such as table Shown in 2, crystal structure is as shown in Figure 1.
Each atomic coordinates, equivalent thermal parameter and occupation rate in 2 sample 1# of table
Wherein, powder x-ray diffraction is the results show that sample 1#~10# is on XRD spectra, and peak position is essentially identical, various kinds Product peak intensity slightly has difference.
Using sample 1# as Typical Representative, as shown in Figure 2.The crystal parsed in Fig. 2 (a) according to its single crystal X-ray diffraction Structure, sample 1# pulverizes the figure that last X-ray diffraction is tested in the X ray diffracting spectrum being fitted and Fig. 2 (b) Spectrum, peak position are consistent with peak intensity.Illustrate that gained sample has very high-purity.
3 frequency multiplication test experiments of embodiment and result
The frequency multiplication test experiments of sample 1# are specific as follows: use adjust Q Nd:YAG solid state laser generate wavelength for The laser of 1064nm irradiates tested crystal powder as fundamental frequency light, detects the two of generated 532nm using photomultiplier tube Subharmonic, with oscilloscope display harmonic wave intensity.Crystal prototype to be measured and standard sample KDP crystal are ground, sifted out with standard screen The crystal of variable grain degree, granularity are respectively 25-45,45-53,53-75,75-105,105-150,150-210,210-300 μm.Frequency-doubled signal is observed with the variation tendency of granularity, judges whether it may be implemented phase matched.In same test condition Under, second harmonic intensity caused by the intensity and reference crystal KDP of second harmonic caused by comparative sample, to obtain sample The relative size of product frequency-doubled effect.
Test result shows compound Ba [BO (OH)2] F crystal have certain frequency-doubled effect, about KH2PO4(KDP) brilliant 0.8 times of body, and it is able to achieve phase matched.
The test of 4 absorption spectrum of embodiment
The diffusing reflection absorption spectrum test of sample 1# is close red in Shimadzu, Japan's UV-3600plus ultraviolet-visible- It is carried out on outer spectrophotometer.As a result as shown in figure 3, the compound 190 to 330nm has stronger absorption as seen from the figure.
Sample 1# grind into powder, with BaSO4As referring to substrate.In Shimadzu UV-3600plus type UV absorption Its diffusing reflection spectrum is tested on spectrometer.Test results are shown in figure 4, shows compound Ba [BO (OH)2] F have it is wider Range is crossed, there is biggish band gap, value Eg=5.35eV.
The infrared of sample 1# carries out on Magna 750FT-IR infrared spectrometer through spectroscopic assay, as a result such as Fig. 5 institute Show, as seen from the figure, there are BO in compound3With OH group, match with mono-crystalline structures.
The above is only several embodiments of the present invention, not any type of limitation is done to the present invention, although this hair It is bright to be disclosed as above with preferred embodiment, however be not intended to limit the invention, any person skilled in the art, it is not taking off In the range of technical solution of the present invention, a little variation or modification are made using the technology contents of the disclosure above and is equal to Case study on implementation is imitated, is belonged in technical proposal scope.

Claims (3)

1. a kind of crystalline material, which is characterized in that chemical formula is Ba [BO (OH)2] F, belong to tetragonal crystal system, space group P-4m2, Cell parameter is α=β=γ=90 °, Z=4.
2. a kind of laser frequency converter, which is characterized in that contain crystalline material described in claim 1.
3. the purposes of laser frequency converter as claimed in claim 2, which is characterized in that with the laser frequency converter by wave A length of 1.064 μm or 532nm of laser beam is with two frequencys multiplication or frequency tripling harmonic wave.
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CN107190318B (en) * 2017-05-09 2022-12-16 同济大学 Preparation and application of beryllium-sodium-free strontium hydroxyl borate deep ultraviolet second-order nonlinear optical crystal material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343327A (en) * 1993-11-05 1994-08-30 University Of Central Florida RbNbB2 O6 crystal and its nonlinear optical devices
CN101216656A (en) * 2008-01-14 2008-07-09 武汉大学 Inorganic infrared nonlinear optical crystal material and method for making same and uses
CN101702069A (en) * 2009-11-19 2010-05-05 中国科学院新疆理化技术研究所 Strontium rubidium tartrate tetrahydrate compound nonlinear optical crystal as well as preparation method and application thereof
CN101876772A (en) * 2009-11-19 2010-11-03 中国科学院新疆理化技术研究所 Compound potassium lead borophosphate nonlinear optical crystal as well as preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343327A (en) * 1993-11-05 1994-08-30 University Of Central Florida RbNbB2 O6 crystal and its nonlinear optical devices
CN101216656A (en) * 2008-01-14 2008-07-09 武汉大学 Inorganic infrared nonlinear optical crystal material and method for making same and uses
CN101702069A (en) * 2009-11-19 2010-05-05 中国科学院新疆理化技术研究所 Strontium rubidium tartrate tetrahydrate compound nonlinear optical crystal as well as preparation method and application thereof
CN101876772A (en) * 2009-11-19 2010-11-03 中国科学院新疆理化技术研究所 Compound potassium lead borophosphate nonlinear optical crystal as well as preparation method and application thereof

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