WO2019095573A1 - 化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途 - Google Patents

化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途 Download PDF

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WO2019095573A1
WO2019095573A1 PCT/CN2018/076210 CN2018076210W WO2019095573A1 WO 2019095573 A1 WO2019095573 A1 WO 2019095573A1 CN 2018076210 W CN2018076210 W CN 2018076210W WO 2019095573 A1 WO2019095573 A1 WO 2019095573A1
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temperature
srb
crystal
compound
quartz tube
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PCT/CN2018/076210
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French (fr)
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潘世烈
穆太力普•米日丁
张敏
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中国科学院新疆理化技术研究所
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
    • C01B35/10—Compounds containing boron and oxygen
    • C01B35/12—Borates
    • C01B35/127—Borates of heavy metals
    • 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
    • C30B1/00—Single-crystal growth directly from the solid state
    • C30B1/10—Single-crystal growth directly from the solid state by solid state reactions or multi-phase diffusion
    • 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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/002—Crucibles or containers for supporting the melt
    • 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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/003—Heating or cooling of the melt or the crystallised material
    • 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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/04—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
    • C30B11/06—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt at least one but not all components of the crystal composition being added
    • 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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/04—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
    • C30B11/08—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt every component of the crystal composition being added during the crystallisation
    • 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
    • C30B29/12—Halides
    • 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
    • C30B9/00—Single-crystal growth from melt solutions using molten solvents
    • C30B9/04—Single-crystal growth from melt solutions using molten solvents by cooling of the solution
    • C30B9/08—Single-crystal growth from melt solutions using molten solvents by cooling of the solution using other solvents
    • C30B9/12—Salt solvents, e.g. flux growth
    • 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

Definitions

  • the invention relates to a compound bismuth fluoroborate and bismuth fluoroborate nonlinear optical crystal, a preparation method and use thereof.
  • LBO LiB 3 O 5
  • CBO CsB 3 O 5
  • CsLiB 6 O 10 CsLiB 6 O 10
  • BBO BaB 2 O 4
  • KBBF F 2 (KBBF) crystal.
  • the LBO crystal has a wide range of light transmission, high optical uniformity, a large effective multiplication factor (3KDP) and a high damage threshold (18.9 GW/cm 2 ).
  • CBO and CLBO crystals Similar to LBO crystals, CBO and CLBO crystals also limit their use in the deep UV region due to their relatively small birefringence.
  • the BBO crystal has a large frequency multiplication factor and birefringence, its shortest frequency doubling wavelength is 204.8 nm due to its relatively high ultraviolet absorption cutoff edge (189 nm), which limits its application in the deep ultraviolet region.
  • KBBF can achieve direct six-frequency output of 1064nm fundamental light, but because KBBF has a layered growth habit, it is difficult to grow large-size crystals, which limits its application to some extent. Therefore, it is urgent to develop a new deep ultraviolet nonlinear optical crystal with excellent comprehensive performance.
  • An object of the present invention is to provide a compound bismuth borofluoride which has a chemical formula of SrB 5 O 7 F 3 and a molecular weight of 310.67. Prepared by solid phase reaction.
  • Another object of the present invention is to provide a bismuth borofluoride SrB 5 O 7 F 3 nonlinear optical crystal having a chemical formula of SrB 5 O 7 F 3 having a molecular weight of 310.67, a crystal belonging to an orthorhombic system, and a space group Ccm2 1 .
  • Still another object of the present invention is to provide a method for preparing a bismuth borofluoride nonlinear optical crystal by using a flux method, a ruthenium dropping method, a room temperature solution method, and a solvothermal method for growing a crystal.
  • Still another object of the present invention is to provide a use of a bismuth borofluoride SrB 5 O 7 F 3 nonlinear optical crystal.
  • the compound of the present invention has a chemical formula of SrB 5 O 7 F 3 and a molecular weight of 310.67, which is prepared by a solid phase reaction method.
  • the Sr-containing compound is Sr(BF 4 ) 2
  • the B-containing compound is H 3 BO 3 and B 2 O 3
  • the preparation method of the bismuth borofluoride nonlinear optical crystal adopts a flux method, a ruthenium lowering method, a room temperature solution method or a solvothermal method to grow a crystal:
  • the cosolvent method grows a bismuth borofluoride nonlinear optical crystal, and the specific operation is carried out as follows:
  • the Sr-containing compound is Sr(BF 4 ) 2
  • the B-containing compound is H 3 BO 3 and B 2 O 3
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace to The temperature is raised to 200-650 ° C at a temperature of 10-30 ° C / h, constant temperature for 12-60 hours, then reduced to 25 ° C at a rate of 1-5 ° C / h, open the quartz tube to obtain SrB 5 O 7 F 3 crystal Seed crystal
  • the SrB 5 O 7 F 3 seed crystal obtained in step b is placed in the bottom of the quartz tube, and then the compound SrB 5 O 7 F 3 obtained in step a and the flux are NaF, NaBF 4 , NaF-H 3 BO 3 , NaF-B 2 O 3 , H 3 BO 3 or B 2 O 3 are mixed in a molar ratio of 1:1-5, placed in a quartz tube, and the quartz tube is evacuated to a vacuum of 1 ⁇ 10 -3 Pa. , vacuum sealed with a flame gun;
  • the container in step c is sealed or added 10-100mL solvent as deionized water, anhydrous ethanol, or hydrofluoric acid resealed, placed in an electric resistance furnace, heated to a temperature of 20-40 ° C / h to 150 -650 ° C, constant temperature 12-60 hours, temperature 50 ° C at a temperature of 1-3 ° C / day, and then reduced to a temperature of 1-10 ° C / h to 25 ° C, open the container, you can get the size of 1- 20 mm SrB 5 O 7 F 3 crystal;
  • the bismuth borofluoride nonlinear optical crystal is grown by the enthalpy drop method, and the specific operation is performed as follows:
  • the Sr-containing compound is Sr(BF 4 ) 2
  • the B-containing compound is H 3 BO 3 and B 2 O 3
  • the obtained compound SrB 5 O 7 F 3 is sealed in a hydrothermal kettle, placed in a dry box, heated to 200 ° C at a temperature of 20 ° C / h, constant temperature for 10 hours, and then at a temperature of 1 ° C / h The rate is lowered to 25 ° C, and the hydrothermal kettle is opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the container in step c is sealed and placed in a crucible lowering furnace, heated to 300-600 ° C, kept for 10-20 hours, adjust the position of the container, so that the spontaneous nucleation temperature or inoculation temperature is 350-600 ° C, and then The temperature is slowly lowered at a rate of 0.05-2 mm/h, while keeping the growth temperature constant or slowly decreasing at a temperature of 0-3 ° C / h. After the growth is completed, the temperature of the growth furnace is lowered to 25 ° C, and the container is taken out. That is, a SrB 5 O 7 F 3 crystal having a size of 1-20 mm is obtained;
  • the room temperature solution method grows a bismuth borofluoride nonlinear optical crystal, and the specific operation is carried out according to the following steps:
  • the Sr-containing compound is Sr(BF 4 ) 2
  • the B-containing compound is H 3 BO 3 and B 2 O 3
  • step b The compound SrB 5 O 7 F 3 obtained in step a is sealed in a hydrothermal kettle, placed in a dry box, and heated to a temperature of 200-600 ° C at a temperature of 10-30 ° C / h, at a constant temperature of 10-48 hours. Then, at a rate of 1-5 ° C / h, the temperature is lowered to 25 ° C, and the hydrothermal kettle or quartz tube is opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • step b the seed crystal obtained in step b is placed at the bottom of the cleaned container, and then the obtained compound SrB 5 O 7 F 3 is placed in the container;
  • step d Add 10-100 mL of solvent to the vessel in step c as deionized water, absolute ethanol or hydrofluoric acid, then ultrasonically mix to dissolve and dissolve thoroughly, adjust the pH value of the solution to 1-11, filter with qualitative filter paper, and then Sealed with polyvinyl chloride film, placed in a static environment without shaking, no pollution, no air convection, seal a number of small holes to adjust the evaporation rate of the solvent in the solution, stand at room temperature, until the end of growth, That is, a SrB 5 O 7 F 3 crystal having a size of 1-20 mm is obtained;
  • the Sr-containing compound is Sr(BF 4 ) 2
  • the B-containing compound is H 3 BO 3 and B 2 O 3
  • step b the compound SrB 5 O 7 F 3 obtained in step a is sealed in a hydrothermal kettle, placed in a dry box, and heated to a temperature of 200-600 ° C at a temperature of 10-30 ° C / h, a constant temperature of 10-48 hours, Then, at a rate of 1-5 ° C / h, the temperature is lowered to 25 ° C, and the hydrothermal kettle or quartz tube is opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • step b The seed crystal obtained in step b is placed in the bottom of the clean, non-contaminated 23 mL hydrothermal kettle of the polytetrafluoroethylene liner, and then the obtained compound SrB 5 O 7 F 3 is placed in the polytetrafluoroethylene. Lining
  • the compound of the present invention relates to a bismuth fluoroborate and a bismuth fluoroborate nonlinear optical crystal, and a preparation method and application thereof, wherein the container in the method is platinum ruthenium, iridium, ceramic iridium, quartz tube, conical flask, beaker, inner A hydrothermal kettle lined with a Teflon liner or a stainless steel liner with a platinum sleeve.
  • a vacuum is required before sealing to prevent the gas from being released during the reaction to cause the quartz tube to burst.
  • the container is a conical flask or beaker, the container must be cleaned with acid, then rinsed with deionized water and allowed to dry.
  • the electric resistance furnace used was a muffle furnace or a drying oven.
  • the method for preparing a bismuth borofluoride nonlinear optical crystal according to the present invention wherein a SrB 5 O 7 F 3 nonlinear optical crystal having a size of centimeter is obtained by the method, and has no obvious layer growth habit, and a large size crucible or a container is used. And prolonging the growth period of the crystal, a correspondingly large-sized nonlinear optical crystal SrB 5 O 7 F 3 can be obtained, and in the growth of the SrB 5 O 7 F 3 nonlinear optical crystal, the crystal is easy to grow, transparent and unwrapped, and has The growth rate is fast, the cost is low, and the advantages of large-size crystals are easily obtained.
  • the large-sized SrB 5 O 7 F 3 nonlinear optical crystal obtained is oriented according to the crystallographic data of the crystal, according to the desired angle, The thickness and the cross-sectional size of the crystal are cut, and the light-passing surface of the crystal is polished to be used as a nonlinear optical device.
  • the SrB 5 O 7 F 3 nonlinear optical crystal has a wide light transmission band, stable physical and chemical properties, and high mechanical hardness. It is not easy to be broken and deliquescent, and it is easy to cut, polish and save.
  • Figure 1 is a powder XRD spectrum of the compound SrB 5 O 7 F 3 of the present invention, the spectrum is consistent with the theoretical XRD pattern, and the presence of the compound SrB 5 O 7 F 3 is demonstrated;
  • 2 is a schematic diagram showing the operation of a nonlinear optical device made of the SrB 5 O 7 F 3 crystal of the present invention, wherein 1 is a laser, 2 is a light beam, 3 is a SrB 5 O 7 F 3 crystal, 4 is an outgoing beam, and 5 is Filter.
  • the SrB 5 O 7 F 3 compound is synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ,, and the specific operation steps are carried out according to the embodiment 1;
  • the obtained compound SrB 5 O 7 F 3 was placed in a hydrothermal kettle and sealed, placed in a dry box, heated to 200 ° C at a temperature of 20 ° C / h, kept at a constant temperature for 10 hours, and then at a rate of 1 ° C / h. Dropped to 25 ° C, the hydrothermal kettle was opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed at the bottom of the cleaned beaker, and then the obtained compound SrB 5 O 7 F 3 is placed in a beaker;
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific procedure was carried out according to Example 1;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 40 The temperature of °C / h is raised to 600 ° C, constant temperature for 48 hours, then reduced to 25 ° C at a rate of 5 ° C / h, open the quartz tube to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed at the bottom of the container, and then the obtained compound SrB 5 O 7 F 3 is placed in an Erlenmeyer flask;
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a hydrothermal kettle and sealed, placed in a dry box, and heated to a temperature of 30 ° C / h to 280 ° C, constant temperature for 20 hours, and then at a rate of 2 ° C / h Dropped to 25 ° C, the hydrothermal kettle was opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed at the bottom of the beaker, and then the compound SrB 5 O 7 F 3 obtained in the step a is placed in a beaker;
  • the SrB 5 O 7 F 3 compound is synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ,, and the specific operation steps are carried out according to the embodiment 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 30 The temperature of °C / h is raised to 400 ° C, constant temperature for 30 hours, and then cooled to 25 ° C at a rate of 2 ° C / h, open the quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained SrB 5 O 7 F 3 seed crystal was placed at the bottom of the vessel, and then the obtained compound SrB 5 O 7 F 3 was mixed with the flux for NaF molar ratio 1:5, placed in a quartz tube, and the quartz tube was placed. Vacuuming, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and vacuum-wrapped with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 5 mm ⁇ 5 mm ⁇ 5 mm.
  • the SrB 5 O 7 F 3 compound is synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ,, and the specific operation steps are carried out according to the embodiment 1;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 20 The temperature of °C / h is raised to 300 ° C, constant temperature for 10 hours, then reduced to 25 ° C at a rate of 1 ° C / h, open the quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the seed crystal of SrB 5 O 7 F 3 crystal is placed at the bottom of a ⁇ 10 mm quartz tube, and then the compound SrB 5 O 7 F 3 is mixed with the flux NaF:H 3 BO 3 by a molar ratio of 1:1, wherein the solvent is assisted.
  • NaF: H 3 BO 3 molar ratio of NaF to H 3 BO 3 is 1:1, placed in a quartz tube, the quartz tube is evacuated, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and vacuum-wrapped with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 10 mm ⁇ 7 mm ⁇ 6 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 40 The temperature of °C / h is raised to 500 ° C, constant temperature for 40 hours, and then cooled to 25 ° C at a rate of 4 ° C / h, open the quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained SrB 5 O 7 F 3 seed crystal was placed at the bottom of the vessel, and then the obtained compound SrB 5 O 7 F 3 was mixed with a flux of NaF:B 2 O 3 in a molar ratio of 1:3, wherein NaF-B In the 2 O 3 system, the molar ratio of NaF to B 2 O 3 is 1:2, placed in a quartz tube, and the quartz tube is evacuated to a vacuum of 1 ⁇ 10 -3 Pa, and vacuum-packed with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 5 mm ⁇ 6 mm ⁇ 8 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific procedure was carried out according to Example 1;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, placed in a muffle furnace, and placed in a horse. In the furnace, the temperature is raised to 300 ° C at a temperature of 25 ° C / h, constant temperature for 30 hours, then reduced to 25 ° C at a rate of 3 ° C / h, open the quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal ;
  • the seed crystal of SrB 5 O 7 F 3 crystal is placed at the bottom of the ⁇ 10mm quartz tube, and then the SrB 5 O 7 F 3 compound is mixed with the flux NaBF 4 by a molar ratio of 1: 5 , and placed in a quartz tube.
  • the quartz tube is evacuated, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and is vacuum-packed with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 8 mm ⁇ 7 mm ⁇ 6 mm.
  • the SrB 5 O 7 F 3 compound is synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ,, and the specific operation steps are carried out according to the embodiment 1;
  • the obtained compound SrB 5 O 7 F 3 was placed in a hydrothermal kettle and sealed, placed in a dry box, and heated to 210 ° C at a temperature of 25 ° C / h, at a constant temperature for 15 hours, and then at a rate of 3 ° C / h. Dropped to 25 ° C, the hydrothermal kettle was opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the seed crystal of SrB 5 O 7 F 3 crystal is placed at the bottom of a ⁇ 10 mm quartz tube, and then the compound SrB 5 O 7 F 3 is mixed with the flux NaF:H 3 BO 3 by a molar ratio of 1:5, wherein the solvent is assisted.
  • NaF: H 3 BO 3 molar ratio of NaF to H 3 BO 3 is 2:3 into a quartz tube, the quartz tube is evacuated, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and vacuum-wrapped with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 5 mm ⁇ 5 mm ⁇ 4 mm.
  • the SrB 5 O 7 F 3 compound is synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ,, and the specific operation steps are carried out according to the embodiment 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 40 The temperature of °C / h is raised to 500 ° C, constant temperature for 46 hours, and then cooled to 25 ° C at a rate of 4 ° C / h, open the quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained SrB 5 O 7 F 3 seed crystal was placed at the bottom of the quartz tube, and then the obtained compound SrB 5 O 7 F 3 was mixed with a flux of NaF:B 2 O 3 by a molar ratio of 1:5, wherein NaF- The molar ratio of NaF to B 2 O 3 in the B 2 O 3 system is 1:4, placed in a quartz tube, and the quartz tube is evacuated to a vacuum of 1 ⁇ 10 -3 Pa, and vacuum-packed with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 5 mm ⁇ 4 mm ⁇ 7 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific procedure was carried out according to Example 1:
  • the obtained compound SrB 5 O 7 F 3 was sealed in a hydrothermal kettle, placed in a dry box, heated to 220 ° C at a temperature of 25 ° C / h, kept at a constant temperature for 30 hours, and then at a rate of 3 ° C / h. Dropped to 25 ° C, the hydrothermal kettle was opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the seed crystal of SrB 5 O 7 F 3 crystal is first placed at the bottom of a ⁇ 10 mm quartz tube, and then the SrB 5 O 7 F 3 compound is mixed with the flux H 3 BO 3 at a molar ratio of 1: 5 , and placed in a quartz tube.
  • the quartz tube is evacuated, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and is vacuum-packed with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 5 mm ⁇ 6 mm ⁇ 4 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 35 The temperature of °C / h is raised to 550 ° C, constant temperature for 40 hours, and then cooled to 25 ° C at a rate of 5 ° C / h, open the quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained SrB 5 O 7 F 3 seed crystal was placed at the bottom of the quartz tube, and then the obtained compound SrB 5 O 7 F 3 was mixed with a flux of NaF:B 2 O 3 by a molar ratio of 1:5, wherein NaF- The molar ratio of NaF to B 2 O 3 in the B 2 O 3 system is 2:3, placed in a quartz tube, and the quartz tube is evacuated to a vacuum of 1 ⁇ 10 -3 Pa, and vacuum-packed with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 6 mm ⁇ 7 mm ⁇ 4 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific procedure was carried out according to Example 1;
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 40 The temperature of °C / h is raised to 550 ° C, constant temperature for 25 hours, then reduced to 25 ° C at a rate of 4 ° C / h, the quartz tube is cut, to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the seed crystal of SrB 5 O 7 F 3 crystal is placed at the bottom of a ⁇ 10 mm quartz tube, and then the compound SrB 5 O 7 F 3 is mixed with the flux NaF:H 3 BO 3 by a molar ratio of 1:10, wherein the solvent is assisted.
  • NaF: H 3 BO 3 molar ratio of NaF to H 3 BO 3 is 3:5 into a quartz tube, the quartz tube is evacuated, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and vacuum-wrapped with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 9 mm ⁇ 7 mm ⁇ 6 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific procedure was carried out according to Example 1:
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 30 The temperature of °C / h is raised to 500 ° C, constant temperature for 15 hours, then reduced to 25 ° C at a rate of 5 ° C / h, open the hydrothermal kettle or quartz tube to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the seed crystal of SrB 5 O 7 F 3 crystal was placed at the bottom of a ⁇ 10 mm quartz tube, and then the SrB 5 O 7 F 3 compound was mixed with the flux B 2 O 3 at a molar ratio of 1:10, and placed in a quartz tube.
  • the quartz tube is evacuated, the degree of vacuum reaches 1 ⁇ 10 -3 Pa, and is vacuum-packed with a flame gun;
  • the quartz tube was cut to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 7 mm ⁇ 6 mm ⁇ 4 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 , and the specific procedure was carried out according to Example 1:
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 40 The temperature of °C / h is raised to 600 ° C, constant temperature for 60 hours, then reduced to 25 ° C at a rate of 5 ° C / h, open a hydrothermal kettle or quartz tube to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed on the bottom of the platinum crucible, and then the obtained compound SrB 5 O 7 F 3 is placed in a platinum crucible;
  • Platinum crucible is sealed and placed in a crucible lowering furnace, heated to 300 ° C, kept for 10 hours, the container position is adjusted, the spontaneous nucleation temperature is allowed, and the container is slowly lowered at a temperature of 0.05 mm / h, while maintaining the growth temperature After the end of the growth, the temperature of the growth furnace was lowered to 25 ° C, and the container was taken out to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 6 mm ⁇ 5 mm ⁇ 4 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 , and the specific procedure was carried out according to Example 1:
  • the obtained compound SrB 5 O 7 F 3 was placed in a hydrothermal kettle and sealed, placed in a dry box, heated to 200 ° C at a temperature of 20 ° C / h, kept at a constant temperature for 10 hours, and then at a rate of 1 ° C / h. Dropped to 25 ° C, the hydrothermal kettle was opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed at the bottom of the crucible, and then the obtained compound SrB 5 O 7 F 3 is placed in a crucible;
  • the crucible was sealed and placed in a crucible lowering furnace, heated to 650 ° C, kept for 20 hours, the crucible position was adjusted, the inoculation temperature was 350 ° C, and the vessel was slowly lowered at a temperature of 2 mm / h, while the temperature was 3 ° C. The rate of /h was slowly lowered. After the growth was completed, the temperature of the growth furnace was lowered to 25 ° C, and the crucible was taken out to obtain a crystal of SrB 5 O 7 F 3 having a size of ⁇ 7 mm ⁇ 6 mm ⁇ 5 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 , and the specific procedure was carried out according to Example 1:
  • the obtained compound SrB 5 O 7 F 3 was placed in a ⁇ 10 mm quartz tube, and the quartz tube was evacuated to a vacuum of 1 ⁇ 10 -3 Pa, vacuum-packed with a flame gun, and placed in a muffle furnace at a temperature of 30 The temperature of °C/h is raised to 400 ° C, the temperature is kept for 36 hours, then the temperature is lowered to 25 ° C at a rate of 3 ° C / h, and the quartz tube is cut to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed on the bottom of the ceramic crucible, and then the obtained compound SrB 5 O 7 F 3 is placed in a ceramic crucible;
  • the ceramic crucible is sealed and placed in a crucible lowering furnace, heated to 450 ° C, held for 15 hours, the ceramic crucible is adjusted, the inoculation temperature is 400 ° C, and the ceramic crucible is slowly lowered at a temperature of 0.5 mm / h, while maintaining growth The temperature was constant. After the growth was completed, the temperature of the growth furnace was lowered to 25 ° C, and the ceramic crucible was taken out to obtain a SrB 5 O 7 F 3 crystal having a size of ⁇ 6 mm ⁇ 8 mm ⁇ 12 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 , and the specific procedure was carried out according to Example 1:
  • the obtained compound SrB 5 O 7 F 3 was placed in a hydrothermal kettle and sealed, placed in a dry box, heated to 200 ° C at a temperature of 20 ° C / h, kept at a constant temperature for 10 hours, and then at a rate of 1 ° C / h. Dropped to 25 ° C, the hydrothermal kettle was opened to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed at the bottom of the quartz tube, and then the obtained compound SrB 5 O 7 F 3 is placed in a quartz tube;
  • 600 ° C slowly reduce the quartz tube at a temperature of 1 mm / h, while slowly cooling at a rate of 2 ° C / h, after the end of growth, the growth furnace temperature is reduced to 25 ° C, take out the quartz tube, that is SrB 5 O 7 F 3 crystal having a size of ⁇ 7 mm ⁇ 6 mm ⁇ 5 mm.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +7B 2 O 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 , and the specific procedure was carried out according to Example 2:
  • the obtained compound SrB 5 O 7 F 3 was sealed in a hydrothermal kettle, placed in a dry box, heated to 150 ° C at a rate of 20 ° C / h, kept at a constant temperature for 10 hours, and then lowered at a rate of 1 ° C / h. Open the hydrothermal kettle to 25 ° C to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal was placed in the bottom of the clean, non-contaminated 23 mL hydrothermal kettle of the polytetrafluoroethylene inner liner, and then the obtained compound SrB 5 O 7 F 3 was placed in the polytetrafluoroethylene inner liner;
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a clean, non-contaminated 23 mL hydrothermal kettle bottom of the polytetrafluoroethylene liner, placed in a dry box, and heated to a temperature of 20 ° C / h to 230 ° C, constant temperature for 10 hours, then reduced to 25 ° C at a rate of 1 ° C / h, open the hydrothermal kettle to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed on the bottom of the polytetrafluoroethylene inner liner of the hydrothermal kettle, and then the obtained compound SrB 5 O 7 F 3 is placed in the polytetrafluoroethylene inner liner of the hydrothermal kettle;
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a clean, non-contaminating bottom of a 50 mL stainless steel-lined hydrothermal kettle with a platinum sleeve and placed in a muffle furnace at a temperature of 30 ° C / h.
  • the rate is raised to 300 ° C, constant temperature for 15 hours, then reduced to 25 ° C at a rate of 2 ° C / h, open the hydrothermal kettle to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal was placed at the bottom of a stainless steel-lined hydrothermal kettle equipped with a platinum sleeve, and the obtained compound SrB 5 O 7 F 3 was placed in a stainless steel-lined hydrothermal kettle equipped with a platinum sleeve. ;
  • the hydrothermal kettle in the stainless steel lining with platinum sleeve was added to 50 mL of solvent as deionized water, and the hydrothermal kettle was tightly sealed, and the hydrothermal kettle was placed in a muffle furnace at a temperature of 30 ° C / h.
  • the temperature is raised to 250 ° C, constant temperature for 24 hours, then reduced to 200 ° C at a temperature drop rate of 2 ° C / day, and then reduced to 25 ° C at a temperature of 5 ° C / h, open the hydrothermal kettle, you can get the size of ⁇ 5mm ⁇ 4 mm ⁇ 3 mm SrB 5 O 7 F 3 crystal.
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in a clean, non-contaminating bottom of a 23 mL stainless steel-lined hydrothermal kettle with a platinum sleeve and placed in a muffle furnace at a temperature of 35 ° C / h.
  • the rate is raised to 500 ° C, constant temperature for 48 hours, then reduced to 25 ° C at a rate of 4 ° C / h, open the hydrothermal kettle to obtain the seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal was placed at the bottom of a stainless steel-lined hydrothermal kettle equipped with a platinum sleeve, and the obtained compound SrB 5 O 7 F 3 was placed in a stainless steel-lined hydrothermal kettle equipped with a platinum sleeve. ;
  • the SrB 5 O 7 F 3 compound was synthesized according to the reaction formula: 3Sr(BF 4 ) 2 +14H 3 BO 3 ⁇ 3SrB 5 O 7 F 3 +5BF 3 ⁇ +21H 2 O ⁇ , and the specific operation procedure was carried out according to Example 2;
  • the obtained compound SrB 5 O 7 F 3 was placed in the bottom of a clean, non-contaminated 23 mL hydrothermal kettle PTFE lining, placed in an electric resistance furnace, and heated at a temperature of 40 ° C / h to 220 ° C, constant temperature for 48 hours, then at a rate of 5 ° C / h down to 25 ° C, open the hydrothermal kettle to obtain a seed crystal of SrB 5 O 7 F 3 crystal;
  • the obtained seed crystal is placed on the bottom of the polytetrafluoroethylene inner liner of the hydrothermal kettle, and then the obtained compound SrB 5 O 7 F 3 is placed in the polytetrafluoroethylene inner liner of the hydrothermal kettle;
  • the arbitrary SrB 5 O 7 F 3 crystals obtained in Examples 1-24 were processed in the matching direction, placed at the position of 3 as shown in Fig. 2, and the Q-switched Nd:YAG laser was used as the light source at room temperature.
  • the wavelength is 1064 nm
  • the infrared beam 2 of the wavelength of 1064 nm is emitted from the Q-switched QDd:YAG laser 1 into the SrB 5 O 7 F 3 single crystal 3 to generate green double-frequency light with a wavelength of 532 nm, and the output intensity is about 1.5 of the same condition KDP. Times.
  • the arbitrary SrB 5 O 7 F 3 crystals obtained in Examples 1-24 were processed in the matching direction, placed at the position of 3 as shown in Fig. 2, and the Q-switched Nd:YAG laser was used as the light source at room temperature.
  • the wavelength is 532 nm
  • the infrared beam 2 with a wavelength of 532 nm emitted from the Q-switched Nd:YAG laser 1 is incident on the SrB 5 O 7 F 3 single crystal 3 to generate a double-frequency light having a wavelength of 266 nm, and the output intensity is about the same condition BBO. 0.3 times.
  • the arbitrary SrB 5 O 7 F 3 crystals obtained in Examples 1-24 were processed in the matching direction, placed at the position of 3 as shown in Fig. 2, and the Q-switched Nd:YAG laser was used as the light source at room temperature.
  • the Q-switched Nd:YAG laser was used as the light source at room temperature.
  • an infrared beam 2 having a wavelength of 355 nm emitted from a Q-switched QAd:YAG laser 1 is incident on the SrB 5 O 7 F 3 single crystal 3, and a deep ultraviolet double-frequency light output having a wavelength of 177.3 nm can be observed.

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Abstract

本发明涉及一种化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途，该化合物的化学式为SrB5O7F3，分子量为310.67，采用固相反应法制备；该晶体的化学式为SrB5O7F3，分子量为310.67，晶体属正交晶系，空间群Ccm21，晶胞参数为a=10.016(6)Å，b=8.654(6)(4)Å，c=8.103(5)Å，Z=4, V=702.4(8)Å3。通过该方法获得尺寸为厘米级的SrB5O7F3非线性光学晶体，在制备Nd:YAG激光器所输出的1064nm的基频光进行2倍频或3倍频或4倍频或5倍频或6倍频的谐波光输出或产生低于200nm的深紫外倍频光输出的用途或制备倍频发生器、上或下频率转换器或光参量振荡器中的用途。该SrB5O7F3非线性光学晶体具有较宽的透光波段，物化性能稳定，机械硬度大，不易碎裂和潮解，易于切割、抛光加工和保存等优点。

Description

化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途
相关申请
本申请要求名称为“化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途”、于2017年11月17日提交的中国专利申请号为201711142513.6的优先权，在此通过引用包括该件申请。
技术领域
本发明涉及一种化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途。
背景技术
随着193nm光刻技术、微纳米精细激光加工,以及超高能量分辨率光电子能谱仪和光电子发射显微镜等现代化仪器对深紫外激光源(一般指波长短于200nm)的强烈需求发展全固态深紫外激光光源已经成为国际激光科学界近期研究的一个热点。发展全固态深紫外激光光源，深紫外非线性光学晶体是十分关键的一个元件。
目前产业应用的紫外、深紫外非线性光学晶体主要包括LiB 3O 5(LBO)、CsB 3O 5(CBO)、CsLiB 6O 10(CLBO)、BaB 2O 4(BBO)和KBe 2BO 3F 2(KBBF)晶体。LBO晶体具有宽的透光范围，高的光学均匀性，具有较大的有效倍频系数(3KDP)和高的损伤阈值(18.9GW/cm 2)。但是由于其相对较小的双折射(Δn＝0.04-0.05)，使其不能在深紫外区实现相位匹配，最短倍频波长为276nm。与LBO晶体类似，CBO与CLBO晶体也是由于其相对较小的双折射，限制了在深紫外区的应用。BBO晶体虽然具有较大的倍频系数和双折射，但是由于其相对较高的紫外吸收截止边(189nm)，其最短倍频波长为204.8nm，从而限制了其在深紫外区的应用。KBBF可以实现对1064nm基频光直接六倍频输出，但是由于KBBF具有层状生长习性，生长大尺寸晶体难度大，在一定程度上限制了它的应用。因此迫切需要开发出综合性能优异的新型深紫外非线性光学晶体。
发明内容
本发明目的在于提供一种化合物氟硼酸锶，该化合物的化学式为SrB 5O 7F 3，分子量为310.67。采用固相反应法制备。
本发明的另一个目的在于提供氟硼酸锶SrB 5O 7F 3非线性光学晶，该晶体的化学式为SrB 5O 7F 3，分子量为310.67，晶体属正交晶系，空间群Ccm2 1，晶胞参数为
Figure PCTCN2018076210-appb-000001
Figure PCTCN2018076210-appb-000002
Z＝4，
Figure PCTCN2018076210-appb-000003
本发明又一个目的在于提供氟硼酸锶非线性光学晶体的制备方法，采用助熔剂法，坩埚下降法，室温溶液法和溶剂热法生长晶体。
本发明再一个目的是提供氟硼酸锶SrB 5O 7F 3非线性光学晶体的用途。
本发明所述的一种化合物氟硼酸锶，该化合物的化学式为SrB 5O 7F 3，分子量为310.67，采用固相反应法制备。
所述的化合物氟硼酸锶制备方法，按下列步骤进行：
将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3。
一种氟硼酸锶非线性光学晶体，该晶体的化学式为SrB 5O 7F 3，分子量为310.67，晶体属正交晶系，空间群Ccm2 1，晶胞参数为
Figure PCTCN2018076210-appb-000004
Figure PCTCN2018076210-appb-000005
Z＝4，
Figure PCTCN2018076210-appb-000006
所述氟硼酸锶非线性光学晶体的制备方法，采用助熔剂法，坩埚下降法，室温溶液法或溶剂热法生长晶体：
所述助溶剂法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
b、将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度10-30℃/h的速率升温至200-650℃，恒温12-60小时，然后以温度1-5℃/h的速率降至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
c、将步骤b得到的SrB 5O 7F 3籽晶放在容器为石英管的底部，然后将步骤a得到的化合物SrB 5O 7F 3与助熔剂为NaF、NaBF 4、NaF-H 3BO 3、NaF-B 2O 3、H 3BO 3或B 2O 3按摩尔比1∶1-5混合，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
d、将步骤c中的容器密封或加入10-100mL溶剂为去离子水，无水乙醇，或氢氟酸再密封，放到电阻炉中，以温度20-40℃/h的速率升温至150-650℃，恒温12-60小时，以温度1-3℃/天的速率降温50℃，再以温度1-10℃/h的速率降至25℃，打开容器，即可获得尺寸为1-20mm的SrB 5O 7F 3晶体；
所述坩埚下降法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
b、将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度20℃/h的速率升温至200℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
c、将得到的籽晶放在铱坩埚的底部，然后将得到的化合物SrB 5O 7F 3放入铱坩埚中；
d、将步骤c中的容器密封并置于坩埚下降炉中，升温至300-600℃，保温10-20小时，调整容器位置，使自发成核温度或接种温度在350-600℃，再以温度0.05-2mm/h的速度缓慢降低容器，同时，保持生长温度不变或以温度0-3℃/h的速率缓慢降温，待生长结束后，将生长炉温度降至25℃，取出容器，即得到尺寸为1-20mm的SrB 5O 7F 3晶体；
所述室温溶液法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
b、将步骤a得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度10-30℃/h的速率升温至200-600℃，恒温10-48小时，然后以温度1-5℃/h的速率降至25℃，打开水热釜或石英管，得到SrB 5O 7F 3晶体的籽晶；
c、将步骤b得到的籽晶放在洗干净的容器的底部，然后将得到的化合物SrB 5O 7F 3放入容器中；
d、将步骤c中的容器中加入10-100mL溶剂为去离子水，无水乙醇或氢氟酸，然后超声波处理使其充分混合溶解，调节溶液pH值1-11，用定性滤纸过滤，再用聚氯乙烯薄膜封口，放在无晃动、无污染、无空气对流的静态环境中，将封口扎若干个小孔用以调节溶液中溶剂的挥发速率，在室温下静置，待生长结束，即得到尺寸为1-20mm的SrB 5O 7F 3晶体；
所述溶剂热法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
b、将步骤a得到的化合物SrB 5O 7F 3装入水热釜密封，放到干燥箱中，以温度10-30℃/h的速率升温至200-600℃，恒温10-48小时，然后以温度1-5℃/h的速率降至25℃，打开水热釜或石英管，得到SrB 5O 7F 3晶体的籽晶；
c、将步骤b得到的籽晶放在干净、无污染的体积为23mL的水热釜的聚四氟乙烯内衬的底部，然后将得到的化合物SrB 5O 7F 3放入聚四氟乙烯内衬中；
d、将聚四氟乙烯内衬中加入溶剂为去离子水，并将水热釜旋紧密封；将水热釜放置在干燥箱内，按20℃/h的速率升温至150℃，恒温24小时，再以2℃/天的降温速率降至130℃；再以2℃/h的速率降至25℃，打开水热釜，即可获得SrB 5O 7F 3晶体。
步骤c中的助熔剂NaF-H 3BO 3体系中NaF与H 3BO 3的摩尔比为1-3∶1-5；NaF-B 2O 3体系中NaF与B 2O 3的摩尔比为1-2∶1-4。
所述氟硼酸锶非线性光学晶体在制备Nd:YAG激光器所输出的1064nm的基频光进行2倍频或3倍频或4倍频或5倍频或6倍频的谐波光输出的用途。
所述氟硼酸锶非线性光学晶体在制备产生低于200nm的深紫外倍频光输出中的用途。
所述氟硼酸锶非线性光学晶体在制备倍频发生器、上或下频率转换器或光参量振荡器中的用途。
本发明所述的化合物氟硼酸锶及氟硼酸锶非线性光学晶体及制备方法和用途，其中，所述方法中容器为铂金坩埚，铱坩埚，陶瓷坩埚，石英管，锥形瓶，烧杯，内衬为聚四氟乙烯内衬或装有铂金套管的不锈钢内衬的水热釜。当容器为石英管时，密封之前需要抽真空，避免反应过程中放出气体使石英管炸裂。当容器为锥形瓶或烧杯，须先用酸将容器清洗干净，再用去离子水润洗，晾干。
所用的电阻炉为马弗炉或干燥箱。
采用本发明所述的氟硼酸锶非线性光学晶体的制备方法，通过该方法获得尺寸为厘米级的SrB 5O 7F 3非线性光学晶体，无明显层状生长习性，使用大尺寸坩埚或容器，并延长晶体的生长周期，则可获得相应大尺寸的非线性光学晶体SrB 5O 7F 3，在该SrB 5O 7F 3非线性光学晶体的生长中晶体易长大透明无包裹，具有生长速度快，成本低，容易获得大尺寸晶体等优点。
采用本发明所述的氟硼酸锶非线性光学晶体的制备方法，获得的大尺寸SrB 5O 7F 3非线性光学晶体，根据晶体的结晶学数据，将晶体毛胚定向，按所需角度、厚度和截面尺寸切割晶体，将晶体的通光面抛光，即可作为非线性光学器件使用，该SrB 5O 7F 3非线性光学晶体具有较宽的透光波段，物化性能稳定，机械硬度大，不易碎裂和潮解，易于切割、抛光加工和保存等优点。
附图说明
图1为本发明化合物SrB 5O 7F 3的粉末XRD谱图，谱图与理论XRD图谱一致，证明了化合物SrB 5O 7F 3的存在；
图2为本发明SrB 5O 7F 3晶体制作的非线性光学器件的工作原理图，其中1为激光器，2为发出光束，3为SrB 5O 7F 3晶体，4为出射光束，5为滤波片。
具体实施方式
实施例1
制备化合物：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑，采用固相反应法合成化合物SrB 5O 7F 3：
将Sr(BF 4) 2，B 2O 3按摩尔比3:7混合均匀，装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度30℃/h的速率升温至600℃，恒温12小时，然后以温度6℃/h的速率降至25℃，打开石英管，即得到化合物SrB 5O 7F 3。
实施例2
制备化合物：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑，采用固相反应法合成化合物SrB 5O 7F 3：
将Sr(BF 4) 2，H 3BO 3按摩尔比3:14混合均匀，装入干净、无污染的体积为23mL的水热釜的聚四氟乙烯内衬中，并将水热釜旋紧密封，放置在干燥箱内，以温度35℃/h的速率升温至200℃，恒温60小时，然后以温度6℃/h的速率降至25℃，打开水热釜，即得到化合物SrB 5O 7F 3。
实施例3
室温溶液法合成SrB 5O 7F 3非线性光学晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行；
将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度20℃/h的速率升温至200℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在洗干净的烧杯的底部，然后将得到的化合物SrB 5O 7F 3放入烧杯中；
将烧杯中加入5mL的溶剂氢氟酸，然后超声波处理使其充分混合溶解，调节溶液pH值到4-6，用定性滤纸过滤，用聚氯乙烯薄膜封口，放在无晃动、无污染、无空气对流的静态环境中，将封口扎若干个小孔用以调节溶液中溶剂的挥发速率，在室温下静置，待生长结束，即得到尺寸为Φ3mm×4mm×5mm的SrB 5O 7F 3晶体。
实施例4
室温溶液法合成SrB 5O 7F 3非线性光学晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度40℃/h的速率升温至600℃，恒温48小时，然后以温度5℃/h的速率降至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在容器的底部，然后将得到的化合物SrB 5O 7F 3放入锥形瓶中；
将锥形瓶中加入100mL无水乙醇，然后超声波处理使其充分混合溶解，用定性滤纸过滤，用聚氯乙烯薄膜封口，放在无晃动、无污染、无空气对流的静态环境中，将封口扎若干个小孔用以调节溶液中溶剂的挥发速率，在室温下静置，待生长结束，即得到尺寸为Φ5mm×2mm×3mm的SrB 5O 7F 3晶体。
实施例5
采用室温溶液法生长SrB 5O 7F 3晶体
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度30℃/h的速率升温至280℃，恒温20小时，然后以温度2℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在烧杯的底部，然后将步骤a得到的化合物SrB 5O 7F 3放入烧杯中；
向烧杯中加入去离子水，然后超声波处理使其充分混合溶解，用定性滤纸过滤，用聚氯乙烯薄膜封口，放在无晃动、无污染、无空气对流的静态环境中，将封口扎若干个小孔用以调节溶液中溶剂的挥发速率，在室温下静置，待生长结束，即可得到尺寸为Φ6mm×6mm×5mm的SrB 5O 7F 3晶体。
实施例6
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度30℃/h的速率升温至400℃，恒温30小时，然后以温度2℃/h的速率降温至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的SrB 5O 7F 3籽晶放在容器的底部，然后将得到的化合物SrB 5O 7F 3与助熔剂为NaF按摩尔比1∶5混合，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度30℃/h的速率升温至500℃，恒温36小时，然后以温度1.5℃/天的速率降温至450℃，再以温度2℃/h的速率降至25℃，切开石英管，即获得尺寸为Φ5mm×5mm×5mm的SrB 5O 7F 3晶体。
实施例7
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度20℃/h的速率升温至300℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
先将SrB 5O 7F 3晶体的籽晶放在Φ10mm的石英管的底部，然后将化合物SrB 5O 7F 3与助熔剂NaF:H 3BO 3按摩尔比1∶1混合，其中助溶剂NaF:H 3BO 3中的NaF与H 3BO 3的摩尔比为1∶1，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度30℃/h的速率升温至450℃，恒温24小时，然后以温度1.5℃/天的速率降温至400℃，再以温度2℃/h的速率降至25℃，切开石英管，即可获得尺寸为Φ10mm×7mm×6mm的SrB 5O 7F 3晶体。
实施例8
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度40℃/h的速率升温至500℃，恒温40小时，然后以温度4℃/h的速率降温至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的SrB 5O 7F 3籽晶放在容器的底部，然后将得到的化合物SrB 5O 7F 3与助熔剂为NaF:B 2O 3按摩尔比1∶3混合，其中NaF-B 2O 3体系中NaF与B 2O 3的摩尔比为1∶2，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度40℃/h的速率升温至450℃，恒温20小时，然后以温度2℃/天的速率降温至400℃，再以温度3℃/h的速率降至25℃，切开石英管，即获得尺寸为Φ5mm×6mm×8mm的SrB 5O 7F 3晶体。
实施例9
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，放到马弗炉中，以温度25℃/h的速率升温至300℃，恒温30小时，然后以温度3℃/h的速率降至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
先将SrB 5O 7F 3晶体的籽晶放在Φ10mm的石英管的底部，然后按摩尔比1∶5将SrB 5O 7F 3化合物与助熔剂NaBF 4混合，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度40℃/h的速率升温至600℃，恒温48小时，然后以温度3℃/天的速率降温至550℃，再以温度10℃/h的速率降至25℃，切开石英管，即可获得尺寸为Φ8mm×7mm×6mm的SrB 5O 7F 3晶体。
实施例10
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行；
将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度25℃/h的速率升温至210℃，恒温15小时，然后以温度3℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
先将SrB 5O 7F 3晶体的籽晶放在Φ10mm的石英管的底部，然后将化合物SrB 5O 7F 3与助熔剂NaF:H 3BO 3按摩尔比1∶5混合，其中助溶剂NaF:H 3BO 3中的NaF与H 3BO 3的摩尔比为2∶3放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度30℃/h的速率升温至450℃，恒温24小时，然后以温度1.5℃/天的速率降温至400℃，再以温度2℃/h的速率降至25℃，切开石英管，即可获得尺寸为Φ5mm×5mm×4mm的SrB 5O 7F 3晶体。
实施例11
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度40℃/h的速率升温至500℃，恒温46小时，然后以温度4℃/h的速率降温至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的SrB 5O 7F 3籽晶放在石英管的底部，然后将得到的化合物SrB 5O 7F 3与助熔剂为NaF:B 2O 3按摩尔比1∶5混合，其中NaF-B 2O 3体系中NaF与B 2O 3的摩尔比为1∶4，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度40℃/h的速率升温至400℃，恒温20小时，然后以温度2℃/天的速率降温至350℃，再以温度3℃/h的速率降至25℃，切开石英管，即获得尺寸为Φ5mm×4mm×7mm的SrB 5O 7F 3晶体。
实施例12
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行：
将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度25℃/h的速率升温至220℃，恒温30小时，然后以温度3℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
先将SrB 5O 7F 3晶体的籽晶放在Φ10mm的石英管的底部，然后按摩尔比1∶5将SrB 5O 7F 3化合物与助熔剂H 3BO 3混合，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度40℃/h的速率升温至600℃，恒温48小时，然后以温度3℃/天的速率降温至550℃，再以温度10℃/h的速率降至25℃，切开石英管，即可获得尺寸为Φ5mm×6mm×4mm的SrB 5O 7F 3晶体。
实施例13
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度35℃/h的速率升温至550℃，恒温40小时，然后以温度5℃/h的速率降温至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的SrB 5O 7F 3籽晶放在石英管的底部，然后将得到的化合物SrB 5O 7F 3与助熔剂为NaF:B 2O 3按摩尔比1∶5混合，其中NaF-B 2O 3体系中NaF与B 2O 3的摩尔比为2∶3，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度35℃/h的速率升温至450℃，恒温36小时，然后以温度4℃/天的速率降温至400℃，再以温度10℃/h的速率降至30℃，切开石英管，即获得尺寸为Φ6mm×7mm×4mm的SrB 5O 7F 3晶体。
实施例14
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行；
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度40℃/h的速率升温至550℃，恒温25小时，然后以温度4℃/h的速率降至25℃，切开石英管，得到SrB 5O 7F 3晶体的籽晶；
先将SrB 5O 7F 3晶体的籽晶放在Φ10mm的石英管的底部，然后将化合物SrB 5O 7F 3与助熔剂NaF:H 3BO 3按摩尔比1∶10混合，其中助溶剂NaF:H 3BO 3中的NaF与H 3BO 3的摩尔比为3∶5放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度40℃/h的速率升温至550℃，恒温40小时，然后以温度3℃/天的速率降温至500℃，再以温度8℃/h的速率降至25℃，切开石英管，即可获得尺寸为Φ9mm×7mm×6mm的SrB 5O 7F 3晶体。
实施例15
助熔剂法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行：
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度30℃/h的速率升温至500℃，恒温15小时，然后以温度5℃/h的速率降至25℃，打开水热釜或石英管，得到SrB 5O 7F 3晶体的籽晶；
先将SrB 5O 7F 3晶体的籽晶放在Φ10mm的石英管的底部，然后按摩尔比1∶10将SrB 5O 7F 3化合物与助熔剂B 2O 3混合，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
然后放入马弗炉中，以温度40℃/h的速率升温至500℃，恒温45小时，然后以温度3℃/天的速率降温至450℃，再以温度6℃/h的速率降至25℃，切开石英管，即可获得尺寸为Φ7mm×6mm×4mm的SrB 5O 7F 3晶体。
实施例16
采用坩埚下降法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行：
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度40℃/h的速率升温至600℃，恒温60小时，然后以温度5℃/h的速率降至25℃，打开水热釜或石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在铂金坩埚的底部，然后将得到的化合物SrB 5O 7F 3放入铂金坩埚中；
将铂金坩埚密封并置于坩埚下降炉中，升温至300℃，保温10小时，调整容器位置，使自发成核温度，再以温度0.05mm/h的速度缓慢降低容器，同时，保持生长温度不变，待生长结束后，将生长炉温度降至25℃，取出容器，即得到尺寸为Φ6mm×5mm×4mm的SrB 5O 7F 3晶体。
实施例17
采用坩埚下降法生长SrB 5O 7F 3晶体
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行：
将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度20℃/h的速率升温至200℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在铱坩埚的底部，然后将得到的化合物SrB 5O 7F 3放入铱坩埚中；
将铱坩埚密封并置于坩埚下降炉中，升温至650℃，保温20小时，调整铱坩埚位置，接种温度在350℃，再以温度2mm/h的速度缓慢降低容器，同时，以温度3℃/h的速率缓慢降温，待生长结束后，将生长炉温度降至25℃，取出铱坩埚，即得到尺寸为Φ7mm×6mm×5mm的SrB 5O 7F 3晶体。
实施例18
采用坩埚下降法生长SrB 5O 7F 3晶体：
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行：
将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度30℃/h的速率升温至400℃，恒温36小时，然后以温度3℃/h的速率降至25℃，切开石英管，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在陶瓷坩埚的底部，然后将得到的化合物SrB 5O 7F 3放入陶瓷坩埚中；
将陶瓷坩埚密封并置于坩埚下降炉中，升温至450℃，保温15小时，调整陶瓷坩埚位置，接种温度在400℃，再以温度0.5mm/h的速度缓慢降低陶瓷坩埚，同时，保持生长温度不变，待生长结束后，将生长炉温度降至25℃，取出陶瓷坩埚，即得到尺寸为Φ6mm×8mm×12mm的SrB 5O 7F 3晶体。
实施例19
采用坩埚下降法生长SrB 5O 7F 3晶体
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例1进行：
将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度20℃/h的速率升温至200℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在石英管的底部，然后将得到的化合物SrB 5O 7F 3放入石英管中；
将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装密封，并将石英管置于坩埚下降炉中，升温至600℃，保温20小时，调整石英管位置，接种温度在600℃，再以温度1mm/h的速度缓慢降低石英管，同时，以温度2℃/h的速率缓慢降温，待生长结束后，将生长炉温度降至25℃，取出石英管，即得到尺寸为Φ7mm×6mm×5mm的SrB 5O 7F 3晶体。
实施例20
按反应式：3Sr(BF 4) 2+7B 2O 3→3SrB 5O 7F 3+5BF 3↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行：
采用溶剂热法生长SrB 5O 7F 3晶体
将得到的化合物SrB 5O 7F 3装入水热釜密封，放到干燥箱中，以温度20℃/h的速率升温至150℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在干净、无污染的体积为23mL的水热釜的聚四氟乙烯内衬的底部，然后将得到的化合物SrB 5O 7F 3放入聚四氟乙烯内衬中；
将聚四氟乙烯内衬中加入溶剂为去离子水，并将水热釜旋紧密封；将水热釜放置在干燥箱内，按20℃/h的速率升温至150℃，恒温24小时，再以2℃/天的降温速率降至130℃；再以2℃/h的速率降至25℃，打开水热釜，即可获得尺寸为Φ5mm×6mm×8mm的SrB 5O 7F 3晶体。
实施例21
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
采用溶剂热法生长SrB 5O 7F 3晶体
将得到的化合物SrB 5O 7F 3装入干净、无污染的体积为23mL的水热釜的聚四氟乙烯内衬的底部，放到干燥箱中，以温度20℃/h的速率升温至230℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在水热釜的聚四氟乙烯内衬的底部，然后将得到的化合物SrB 5O 7F 3放入水热釜的聚四氟乙烯内衬中；
将水热釜的聚四氟乙烯内衬中加入10mL溶剂为氢氟酸，并将水热釜旋紧密封；将水热釜放置在干燥箱内，以温度20℃/h的速率升温至200℃，恒温24小时，再以温度2℃/天的降温速率降至100℃，再以温度2℃/h的速率降至25℃，打开水热釜，即可获得尺寸为Φ5mm×6mm×4mm的SrB 5O 7F 3晶体。
实施例22
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
采用溶剂热法生长SrB 5O 7F 3晶体
将得到的化合物SrB 5O 7F 3装入干净、无污染的体积为50mL的装有铂金套管的不锈钢内衬的水热釜的底部，放到马弗炉中，以温度30℃/h的速率升温至300℃，恒温15小时，然后以温度2℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在装有铂金套管的不锈钢内衬的水热釜的底部，然后将得到的化合物SrB 5O 7F 3放入装有铂金套管的不锈钢内衬的水热釜中；
将装有铂金套管的不锈钢内衬中的水热釜加入50mL溶剂为去离子水，并将水热釜旋紧密封，将水热釜放置在马弗炉内，以温度30℃/h的速率升温至250℃，恒温24小时，再以温度2℃/天的降温速率降至200℃，再以温度5℃/h的速率降至25℃，打开水热釜，即可获得尺寸为Φ5mm×4mm×3mm的SrB 5O 7F 3晶体。
实施例23
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
采用溶剂热法生长SrB 5O 7F 3晶体
将得到的化合物SrB 5O 7F 3装入干净、无污染的体积为23mL的装有铂金套管的不锈钢内衬的水热釜的底部，放到马弗炉中，以温度35℃/h的速率升温至500℃，恒温48小时，然后以温度4℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在装有铂金套管的不锈钢内衬的水热釜的底部，然后将得到的化合物SrB 5O 7F 3放入装有铂金套管的不锈钢内衬的水热釜中；
将装有铂金套管的不锈钢内衬的水热釜中加入80mL溶剂为氢氟酸，并将水热釜旋紧密封，将水热釜放置在马弗炉内，以温度40℃/h的速率升温至600℃，恒温48小时，再以温度3℃/天的降温速率降至550℃，再以温度10℃/h的速率降至25℃，打开水热釜，即可获得尺寸为Φ5mm×6mm×8mm的SrB 5O 7F 3晶体。
实施例24
按反应式：3Sr(BF 4) 2+14H 3BO 3→3SrB 5O 7F 3+5BF 3↑+21H 2O↑合成SrB 5O 7F 3化合物，具体操作步骤依据实施例2进行；
采用溶剂热法生长SrB 5O 7F 3晶体
将得到的化合物SrB 5O 7F 3装入干净、无污染的体积为23mL的水热釜的聚四氟乙烯内衬的底部，放到电阻炉中，以温度40℃/h的速率升温至220℃，恒温48小时，然后以温度5℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
将得到的籽晶放在水热釜的聚四氟乙烯内衬的底部，然后将得到的化合物SrB 5O 7F 3放入水热釜的聚四氟乙烯内衬中；
将水热釜的聚四氟乙烯内衬中加入10mL溶剂为去离子水，并将水热釜旋紧密封，将水热釜放置在干燥箱内，以温度40℃/h的速率升温至210℃，恒温35小时，再以温度3℃/天的降温速率降至160℃，再以温度4℃/h的速率降至25℃，打开水热釜，即可获得尺寸为Φ5mm×6mm×3mm的SrB 5O 7F 3晶体。
实施例25
将实施例1-24所得的任意SrB 5O 7F 3晶体按相匹配方向加工，按附图2所示安置在3的位置上，在室温下，用调Q Nd:YAG激光器作光源，入射波长为1064nm，由调QNd:YAG激光器1发出波长为1064nm的红外光束2射入SrB 5O 7F 3单晶3，产生波长为532nm的绿色倍频光，输出强度约为同等条件KDP的1.5倍。
实施例26
将实施例1-24所得的任意SrB 5O 7F 3晶体按相匹配方向加工，按附图2所示安置在3的位置上，在室温下，用调Q Nd:YAG激光器作光源，入射波长为532nm，由调Q的Nd:YAG激光器1发出波长为532nm的红外光束2射入SrB 5O 7F 3单晶3，产生波长为266nm的倍频光，输出强度约为同等条件BBO的0.3倍。
实施例27
将实施例1-24所得的任意SrB 5O 7F 3晶体按相匹配方向加工，按附图2所示安置在3的位置上，在室温下，用调Q Nd:YAG激光器作光源，入射波长为355nm，由调QNd:YAG激光器1发出波长为355nm的红外光束2射入SrB 5O 7F 3单晶3，可观察到波长为177.3nm的深紫外倍频光输出。
当然，本发明还可以有多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员可根据本发明的公开做出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明权利要求的保护范围。

Claims (8)

  1. 一种化合物氟硼酸锶，其特征在于,该化合物的化学式为SrB 5O 7F 3，分子量为310.67，采用固相反应法制备。
  2. 根据权利要求1所述的化合物氟硼酸锶，其特征在于,按下列步骤制备：
    将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3。
  3. 一种氟硼酸锶非线性光学晶体，其特征在于,该晶体的化学式为SrB 5O 7F 3，分子量为310.67，晶体属正交晶系，空间群Ccm2 1，晶胞参数为
    Figure PCTCN2018076210-appb-100001
    Figure PCTCN2018076210-appb-100002
  4. 一种权利要求3所述的氟硼酸锶非线性光学晶体的制备方法，其特征在于，采用助熔剂法，坩埚下降法，室温溶液法或溶剂热法生长晶体；
    所述助溶剂法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
    a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
    b、将得到的化合物SrB 5O 7F 3装入Φ10mm的石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装，放入马弗炉中，以温度10-30℃/h的速率升温至200-650℃，恒温12-60小时，然后以温度1-5℃/h的速率降至25℃，打开石英管，得到SrB 5O 7F 3晶体的籽晶；
    c、将步骤b得到的SrB 5O 7F 3籽晶放在容器为石英管的底部，然后将步骤a得到的化合物SrB 5O 7F 3与助熔剂为NaF、NaBF 4、NaF-H 3BO 3、NaF-B 2O 3、H 3BO 3或B 2O 3按摩尔比1∶1-5混合，放入石英管中，将石英管抽真空，真空度达到1×10 -3Pa，用火焰枪真空封装；
    d、将步骤c中的容器密封或加入10-100mL溶剂为去离子水，无水乙醇，或氢氟酸再密封，放到电阻炉中，以温度20-40℃/h的速率升温至150-650℃，恒温12-60小时，以温度1-3℃/天的速率降温50℃，再以温度1-10℃/h的速率降至25℃，打开容器，即可获得尺寸为1-20mm的SrB 5O 7F 3晶体；
    所述坩埚下降法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
    a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
    b、将得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度20℃/h的速率升温至200℃，恒温10小时，然后以温度1℃/h的速率降至25℃，打开水热釜，得到SrB 5O 7F 3晶体的籽晶；
    c、将得到的籽晶放在铱坩埚的底部，然后将得到的化合物SrB 5O 7F 3放入铱坩埚中；
    d、将铱坩埚密封并置于坩埚下降炉中，升温至300-600℃，保温10-20小时，调整容器位置，使自发成核温度或接种温度在350-600℃，再以温度0.05-2mm/h的速度缓慢降低容器，同时，保持生长温度不变或以温度0-3℃/h的速率缓慢降温，待生长结束后，将生长炉温度降至25℃，取出容器，即得到尺寸为1-20mm的SrB 5O 7F 3晶体；
    所述室温溶液法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
    a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管，即得到化合物SrB 5O 7F 3；
    b、将步骤a得到的化合物SrB 5O 7F 3装入水热釜中密封，放到干燥箱中，以温度10-30℃/h的速率升温至200-600℃，恒温10-48小时，然后以温度1-5℃/h的速率降至25℃，打开水热釜或石英管，得到SrB 5O 7F 3晶体的籽晶；
    c、将步骤b得到的籽晶放在洗干净的容器的底部，然后将得到的化合物SrB 5O 7F 3放入容器中；
    d、将步骤c中的容器中加入10-100mL溶剂为去离子水，无水乙醇或氢氟酸，然后超声波处理使其充分混合溶解，调节溶液pH值1-11，用定性滤纸过滤，再用聚氯乙烯薄膜封口，放在无晃动、无污染、无空气对流的静态环境中，将封口扎若干个小孔用以调节溶液中溶剂的挥发速率，在室温下静置，待生长结束，即得到尺寸为1-20mm的SrB 5O 7F 3晶体；
    所述溶剂热法生长氟硼酸锶非线性光学晶体晶体，具体操作按下列步骤进行：
    a、将含Sr化合物为Sr(BF 4) 2，含B化合物为H 3BO 3和B 2O 3，含F化合物为Sr(BF 4) 2按摩尔比Sr∶B∶F＝0.5-2∶5-7∶2-4混合均匀，装入水热釜或石英管中密封，放到电阻炉中，以温度10-30℃/h的速率升温至180-620℃，恒温10-48小时，然后以温度1-10℃/h的速率降至25℃，打开水热釜或石英管得到化合物SrB 5O 7F 3；
    b、将步骤a得到的化合物SrB 5O 7F 3装入水热釜密封，放到干燥箱中，以温度10-30℃/h的速率升温至200-600℃，恒温10-48小时，然后以温度1-5℃/h的速率降至25℃，打开水热釜或石英管，得到SrB 5O 7F 3晶体的籽晶；
    c、将步骤b得到的籽晶放在干净、无污染的体积为23mL的水热釜的聚四氟乙烯内衬的底部，然后将得到的化合物SrB 5O 7F 3放入聚四氟乙烯内衬中；
    d、将聚四氟乙烯内衬中加入溶剂为去离子水，并将水热釜旋紧密封；将水热釜放置在干燥箱内，按20℃/h的速率升温至150℃，恒温24小时，再以2℃/天的降温速率降至130℃；再以2℃/h的速率降至25℃，打开水热釜，即可获得SrB 5O 7F 3晶体。
  5. 根据权利要求4所述的氟硼酸锶非线性光学晶体的制备方法，其特征在于，所述助溶剂法中的步骤c中的助熔剂NaF-H 3BO 3体系中NaF与H 3BO 3的摩尔比为1-3∶1-5；NaF-B 2O 3体系中NaF与B 2O 3的摩尔比为1-2∶1-4。
  6. 一种权利要求3所述的氟硼酸锶非线性光学晶体在制备Nd:YAG激光器所输出的1064nm的基频光进行2倍频或3倍频或4倍频或5倍频或6倍频的谐波光输出的用途。
  7. 一种权利要求3所述的氟硼酸锶非线性光学晶体在制备产生低于200nm的深紫外倍频光输出中的用途。
  8. 一种权利要求3所述的氟硼酸锶非线性光学晶体在制备倍频发生器、上或下频率转换器或光参量振荡器中的用途。
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