Abstract

Provided are a gel and microemulsion gel prepared from a Vernonia anthelmintica extract, and a method for preparing same. The gel comprises Carbomer 2020, water, the Vernonia anthelmintica extract, polyoxyethylene 40 hydrogenated castor oil or polyoxyethylene 35 hydrogenated castor oil, diethylene glycol monoethyl ether, and a neutralizer, wherein the pH value of the gel is 4.3-5.5. The microemulsion gel comprises the Vernonia anthelmintica extract, diethylene glycol monoethyl ether, polyoxyethylene 40 hydrogenated castor oil or polyoxyethylene 35 hydrogenated castor oil, olive oil, almond oil, corn oil or soybean oil, water, and Carbomer 2020. The active ingredients of the Vernonia anthelmintica extract in the gel and the microemulsion gel are vernodalin and 3,5-O-dicaffeoylquinic acid. The major ingredients, vernodalin and 3,5-O-dicaffeoylquinic acid, in the gel and the microemulsion gel feature stable contents and high intradermal retention capability, thus providing the gel and the microemulsion gel with suitability for topical administration for treating vitiligo.

IPC Classes  ?

• A61K 36/28 - Asteraceae or Compositae (Aster or Sunflower family), e.g. chamomile, feverfew, yarrow or echinacea
• A61K 9/06 - OintmentsBases therefor
• A61K 9/107 - Emulsions
• A61K 47/32 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers
• A61K 47/02 - Inorganic compounds
• A61P 17/00 - Drugs for dermatological disorders

Abstract

The present invention relates to a method for preparing a highly conjugated tetraamino 6/6/6/5/7/5 octacyclic alkaloid compound having a unique 8,14,18,24-tetraazaoctacyclic [21.2.21,4.1.02,21.03,18.05,17.09,16.011,15] nonacosane ring system, and the anti-inflammatory and analgesic use of the compound. With regard to the tetraamino 6/6/6/5/7/5 octacyclic alkaloid compound, the root of Anacyclus pyrethrum (L.) DC is extracted using an organic solvent, the resulting extract is extracted, separation is then performed by means of two to three methods of normal-phase silica-gel column chromatography, reversed-phase silica-gel column chromatography and semi-preparative high-performance liquid chromatography to obtain four tetraamino 6/6/6/5/7/5 octacyclic alkaloid monomer compounds having a new skeleton, and the structures of the compounds are identified by means of methods such as high-resolution mass spectrometry, and nuclear magnetic resonance spectroscopy. Further provided in the present invention are the Nav1.2 inhibitory effect and NO inhibitory effect of the compounds.

IPC Classes  ?

• C07D 471/22 - Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups in which the condensed systems contains four or more hetero rings
• A61P 29/00 - Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agentsNon-steroidal antiinflammatory drugs [NSAID]
• A61K 31/55 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole

Abstract

The present invention relates to a use of a flavonoid compound quercetin-3-O-(6''-caffeoyl)-β-D-glucoside. Preliminary experiments of the compound prove that the flavonoid compound quercetin-3-O-(6''-caffeoyl)-β-D-glucoside of the present invention is useful in preparation of a drug for treating vitiligo. The compound can significantly promote melanin synthesis, is superior to a positive control drug 8-methoxypsoralan under the same dosage, provides a new pharmaceutically active compound for the treatment of vitiligo, and has good application prospects.

IPC Classes  ?

• A61K 31/7048 - Compounds having saccharide radicals and heterocyclic rings having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin
• A61P 17/00 - Drugs for dermatological disorders

Abstract

4 and a molecular weight of 146.89, belongs to the trigonal crystal system, has a space group of R3m; has lattice parameters of a=7.4634(10)Å, b=7.4634(10)Å, c=9.1216(19) (6)Å, and Z=3; has an ultraviolet cutoff edge of 200 nm; and has a frequency-multiplication response that is 4-5 times that of the commercialized nonlinear optical crystal KDP. A hydrothermal method, a room-temperature solution method, an evaporation method or a solvothermal method is used to grow the crystal in a centimeter-scaled size. The crystal can produce frequency-doubling, frequency-tripling, frequency-quadrupling, frequency-quintupling or frequency-sextupling harmonic light output from the fundamental frequency light of 1064 nm generated by a Nd:YAG laser, and/or can produce ultraviolet and deep-ultraviolet frequency-multiplication light output below 200 nm.

IPC Classes  ?

• G02F 1/355 - Non-linear optics characterised by the materials used
• C07C 279/02 - GuanidineSalts, complexes or addition compounds thereof
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes
• C30B 29/54 - Organic compounds
• G02F 1/35 - Non-linear optics

Abstract

A method for preparing high-purity granatin A: by means of a combination of low-temperature liquid phase chromatography and an isomerization conversion purification method, using pomegranate peel extract as a source material, granatin A of over 98% purity can be acquired, and can be used as a standard product for quality control of pomegranate peel, pomegranate flower, or other medicinal material with granatin A as the active ingredient.

IPC Classes  ?

• C07H 1/06 - SeparationPurification
• C07H 13/10 - Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals directly attached to heterocyclic rings

Abstract

A method for preparing perovskite nanopowder through a rheological phase reaction at low-temperature that can include: taking hydroxide and metallorganic compound as initial reactants; mixing and stirring the reaction raw materials to form a solid-liquid rheological phase mixture; and controlling the reaction temperature and period, under a low-temperature condition, to prepare perovskite nanopowder in nearly spherical shape and a size of 20-100 nm. This allows for advantages such as controllable product size, low cost, high yield per unit volume, environmental friendliness, high yield per unit volume, and high repeatability. The perovskite nanopowder obtained by this way is nearly spherical, are uniform in size distribution and have controllable granularity. This can be used as the ceramic substrate for electronic components such as high-end chip capacitors and PTC thermistors, etc., as well as the raw material for manufacturing ceramic 3D printing additives and electronic ceramic ink.

IPC Classes  ?

• C01G 23/00 - Compounds of titanium
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

355 and a molecular weight of 197.90, and are prepared by means of a solid-phase synthesis method or a vacuum packaging method. The crystal is monoclinic, has a space group of Cc and cell parameters of a=10.163(3) Å, b=8.391(2) Å, c=6.1222(16) Å, β=122.755(8), Z=4, and V=439.0(2) Å3244(KDP) and an ultraviolet cut-off edge lower than 300 nm. The crystal has excellent comprehensive properties and can be used as an ultraviolet nonlinear optical crystal in an all-solid-state laser.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• G02F 1/355 - Non-linear optics characterised by the materials used
• C01B 35/12 - Borates
• C30B 9/12 - Salt solvents, e.g. flux growth

Abstract

2322322 and a molecular weight of 288.44, and the crystal is an orthorhombic crystal system. The space group thereof is Aba2, and unit cell parameters thereof are a = 11.7579 (7) Å, b = 8.5721(4) Å, c = 4.9421(3) Å, and Z = 4, V = 498.11(5) Å3242322 nonlinear optical crystal having a size on the centimeter level is obtained, which is used to prepare harmonic light output obtained from multiplying the frequency of 1064-nm fundamental frequency light outputted by an Nd:YAG laser two times, three times or four times or to produce ultraviolet frequency-multiplied light output, or used in the preparation of a frequency multiplication generator, a frequency upconverter or downconverter, or an optical parametric oscillator.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C30B 9/00 - Single-crystal growth from melt solutions using molten solvents
• C01B 35/12 - Borates
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

An isomerization feature-based method for purifying and preparing punicalagin is provided, wherein pomegranate peel extract is used as a raw material. The isomerization feature-based method avoids impurities contained in the punicalagin based on structural characteristics, for example, the punicalagin in the pomegranate peel extract has two mutually convertible isomers. In the isomerization feature-based method, a pilot-scale preparative liquid chromatography is used to obtain a large amount of the punicalagin having a purity higher than 98% from a complex pomegranate peel extract. The isomerization feature-based method is simple, an obtained punicalagin has high purities and a preparation is in a massive scale. The isomerization feature-based has a strong reference value for purification and preparation of compounds with isomerization features.

IPC Classes  ?

• C07H 1/08 - SeparationPurification from natural products
• C07H 19/01 - Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radicalNucleosidesMononucleotidesAnhydro derivatives thereof sharing oxygen

Abstract

3; and a Mohs hardness of the nonlinear optical crystal is 4-5. The nonlinear optical crystal is grown by a flux method. The nonlinear optical crystal of the barium cesium borate obtained is used for a manufacture of non-linear optical devices. The nonlinear optical crystal has a large size of centimeter-scale at least and is prepared by fast, simple and low-cost operations. The nonlinear optical crystal prepared has a large size, a wide light transmission band and good mechanical properties.

IPC Classes  ?

• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 29/22 - Complex oxides
• G02F 1/355 - Non-linear optics characterised by the materials used
• G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves

Abstract

2344, and a molecular weight of 146.89, and belongs to a trigonal crystal system, a space group is R3m, a cell parameter is a=7.4634(10)Å, b=7.4634(10)Å, c=9.1216(19) (6)Å, and Z=3; an ultraviolet cutoff edge is 200 nm, a frequency doubling response is 4-5 times that of the commercialized nonlinear optical crystal KDP, and a crystal having a centimeter-level size is grown by using a hydrothermal method, a room temperature solution method, an evaporation method or a solvothermal method. The invention relates to an application of the crystal for preparing an Nd: YAG laser to output 1064 nm of fundamental frequency light to perform frequency doubled or frequency tripled or frequency quadrupled or frequency quintupled or frequency sextupled harmonic light output, or generating ultraviolet and deep ultraviolet frequency doubled light output lower than 200 nm, or an application for preparing a frequency doubling generator, an upper or lower frequency converter or an optical parametric oscillator.

IPC Classes  ?

• C30B 29/54 - Organic compounds
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

A lappaconitine derivative, a preparation method therefor, and a use thereof. The derivative is an enantiomer, a diastereomer, a racemate, and a mixture thereof, as well as a pharmaceutically acceptable inorganic or organic salt, a crystal form, and a solvate thereof; six preparation methods are utilized to obtain the lappaconitine derivative, diterpenoid alkaloid structures are enriched, the lappaconitine derivative is superior to lappaconitine in combating arrhythmia and in analgesic activity, and the toxicity is less than lappaconitine, and thus a synthesized lappaconitine derivative may be used to prepare a drug for treating a cardio-cerebrovascular disease and pain.

IPC Classes  ?

• C07D 221/22 - Bridged ring systems
• A61K 31/439 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom the ring forming part of a bridged ring system, e.g. quinuclidine
• A61K 31/506 - PyrimidinesHydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
• A61P 9/00 - Drugs for disorders of the cardiovascular system
• A61P 9/10 - Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
• A61P 9/06 - Antiarrhythmics
• A61P 9/04 - Inotropic agents, i.e. stimulants of cardiac contractionDrugs for heart failure
• A61P 25/04 - Centrally acting analgesics, e.g. opioids
• A61P 29/00 - Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agentsNon-steroidal antiinflammatory drugs [NSAID]

Abstract

A method for preparing high-purity granatin A: by means of a combination of low-temperature liquid phase chromatography and an isomerisation conversion purification method, using pomegranate peel extract as a source material, granatin A of over 98% purity can be acquired, and can be used as a standard product for quality control of pomegranate peel, pomegranate flower, or other medicinal material with granatin A as the active ingredient.

IPC Classes  ?

• C07H 1/08 - SeparationPurification from natural products
• C07H 13/10 - Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals directly attached to heterocyclic rings

Abstract

3112011 and the cell parameters being a = 19.011(7)Å, b = 10.837(4)Å, c = 8.578(3)Å, Z = 4, and V = 1767.4(11)Å3, and has a Mohs hardness of 4 to 5. The crystal is grown by using a flux method. Disclosed is the use of the cesium barium borate nonlinear optical crystal obtained by means of this method for preparing a nonlinear optical device. The crystal has a large size, which is at least on a centimeter scale, and has the advantages of a rapid preparation speed, easy operation, low costs, a large prepared crystal size, a wide light-transmittance waveband, good mechanical properties, being non-fragile, stable physico-chemical properties, good workability, etc.

IPC Classes  ?

• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 29/22 - Complex oxides
• G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves
• G02F 1/37 - Non-linear optics for second-harmonic generation

Abstract

The present invention relates to an isomerization feature-based purification and preparation method of punicalagin. The method uses a pomegranate peel extract as a raw material, avoids impurities contained in punicalagin on the basis of the structural characteristic of the punicalagin in the pomegranate peel extract having two mutually convertible isomers, and uses intermediate level preparative liquid chromatography to achieve acquisition of a large amount of punicalagin having a purity higher than 98% from a complex extract of pomegranate peel. The method is very simple, the obtained punicalagin has high purity and a large preparation quantity. The method has a strong reference value for the purification and preparation of compounds having isomerization features.

IPC Classes  ?

• C07H 13/08 - Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals directly attached to carbocyclic rings
• C07H 1/08 - SeparationPurification from natural products

Abstract

A compound strontium fluoroborate, nonlinear optical crystal of strontium fluoroborate, preparation method thereof; the chemical formula of the compound is SrB5O7F3, its molecular weight is 310.67, and it is prepared by solid-state reaction; the chemical formula of the crystal is SrB5O7F3, its molecular weight is 310.67, the crystal is of the orthorhombic series, the space group is Ccm21, and the crystal cell parameters are=10.016(6) Å, b=8.654(6)(4) Å, c=8.103(5) Å, Z=4, and V=702.4(8) Å3. A SrB5O7F3 nonlinear optical crystal has uses in the preparation of a harmonic light output when doubling, tripling, quadrupling, quintupling, or sextupling the frequency of a 1064-nm fundamental-frequency light outputted by a Nd:YAG laser, or the generation of a deep-ultraviolet frequency doubling light output lower than 200 nm, or in the preparation of a frequency multiplier, upper or lower frequency converter, or an optical parametric oscillator.

IPC Classes  ?

• C01B 35/12 - Borates
• C30B 1/10 - Single-crystal growth directly from the solid state by solid state reactions or multi-phase diffusion
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 11/08 - 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
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

4 and a molecular weight of 125.70, and belonging to the orthorhombic crystal system and space group Pbcn with unit-cell parameters a=11.60(4)Å, b=4.28(8)Å, c=6.21(6)Å, and Z=4, wherein the calcium metaborate birefringent crystal is a negative biaxial crystal with a transmission range of 165-3400 nm and a birefringence between 0.09-0.36; the crystal is applicable to infrared-visible-ultraviolet-deep ultraviolet bands, and is grown by a melt method, a flux method, a Bridgman method or a heat exchange method; the crystal obtained by the method of the present invention is easy to grow and easy to process; and can be used for making polarizing beam-splitting prisms.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C01B 35/12 - Borates
• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 11/02 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method without using solvents
• C30B 15/20 - Controlling or regulating
• C30B 17/00 - Single-crystal growth on to a seed which remains in the melt during growth, e.g. Nacken-Kyropoulos method
• G02B 1/08 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of polarising materials
• G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising

Abstract

3. The nonlinear optical crystal can be obtained by the method of the present invention. The present invention provides uses of the nonlinear optical crystal in producing harmonic light and a deep-ultraviolet frequency-multiplied light below 200 nm; and in making a frequency multiplication generator, a frequency up or down converter or an optical parametric oscillator.

IPC Classes  ?

• C01B 35/06 - Boron halogen compounds
• G02F 1/35 - Non-linear optics
• G02F 1/37 - Non-linear optics for second-harmonic generation
• G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves
• C30B 7/14 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 29/12 - Halides
• G02F 1/355 - Non-linear optics characterised by the materials used
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes

Abstract

6F.

IPC Classes  ?

• G02F 1/355 - Non-linear optics characterised by the materials used
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
• C30B 29/10 - Inorganic compounds or compositions
• C30B 7/04 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by evaporation of the solvent using aqueous solvents
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes
• C30B 17/00 - Single-crystal growth on to a seed which remains in the melt during growth, e.g. Nacken-Kyropoulos method
• C01B 35/12 - Borates
• G02F 1/35 - Non-linear optics
• G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves
• C30B 15/20 - Controlling or regulating
• C30B 9/12 - Salt solvents, e.g. flux growth
• G02F 1/37 - Non-linear optics for second-harmonic generation

Abstract

1/c space group and lattice constants of a=5.85(8) Å, b=4.35(7) Å, c=6.46(6) Å, β=115(5)°, and Z=4. The crystal can be applied in wavelengths of infrared-visible-deep ultraviolet, and is grown by utilizing a melt crystallization method or a flux method. The crystal obtained using the method described in the invention is easily grown and processed, and can be used in the manufacture of a polarizing beam splitting prism such as a Glan prism, a Wollaston prism, a Rochon prism or a beam-splitting polarizer, and other optical components, enabling crucial applications in the fields of optics and communication.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C01B 35/12 - Borates
• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 15/14 - Heating of the melt or the crystallised materials
• C30B 17/00 - Single-crystal growth on to a seed which remains in the melt during growth, e.g. Nacken-Kyropoulos method
• G02B 1/08 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of polarising materials

Abstract

The present invention relates to a calcium metaborate birefringent crystal, a preparation method therefor and use thereof. Said crystal has a chemical formula of CaB2O4 and a molecular weight of 125.70, and belongs to the orthorhombic system. The space group is Pbcn, the lattice parameters are a = 11.60(4)A, b = 4.28(8)A, c = 6.21(6)A, and Z = 4. The calcium metaborate birefringent crystal is a negative biaxial crystal with a transmission range of 165 - 3400 nm and a birefringence between 0.09 - 0.36. The crystal can be used in the infrared-visible-ultraviolet-deep ultraviolet band. The crystal is grown by means of a melt method, a flux method, Bridgman method or a heat exchange method. The crystal obtained by the method of the present invention is easy to grow and easy to be processed, and can be used for fabricating polarizing beam splitting prism such as Glan prism, Wollaston prism and Rochon prism and optical components such as an optical isolator, a circulator and a beam shifter, having important applications in the fields of optics, laser lithography and communication.

IPC Classes  ?

• C30B 29/16 - Oxides
• C30B 11/02 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method without using solvents
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method

Abstract

57357311, and the crystal cell parameters are a = 10.016(6) Å, b = 8.654(6)(4) Å, c = 8.103(5) Å, Z = 4, and V = 702.4(8) Å35735733 nonlinear optical crystal has the advantages of a relatively wide light transmittance band, stable physical and chemical properties, and high mechanical hardness, not being prone to breaking and deliquescence, being easy to cut, polish, and store.

IPC Classes  ?

• C30B 29/12 - Halides
• C30B 1/10 - Single-crystal growth directly from the solid state by solid state reactions or multi-phase diffusion
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

A compound cesium fluoroborate, a non-linear optical crystal of cesium fluoroborate, a preparation method therefor and use thereof. Said compound, represented by the chemical formula CsB4O6F, has a molecular weight of 291.15 and a crystal structure, and is prepared by using solid phase synthesis or vacuum encapsulation. Said crystal, represented by the chemical formula CsB4O6F, has a molecular weight of 291.15, is an orthorhombic system, belongs to a space group Pna21, and has the cell parameters of a = 7. 9241 Å, b = 11. 3996 Å, c = 6. 6638 Å and α = β = γ = 90°, and the unit cell volume of 601. 95 Å3. The frequency doubling effect of the crystal is about twice that of KH2PO4(KDP), and the ultraviolet absorption edge is less than 190 nm. Growth of the crystal CsB4O6F is performed by using a melt method, high temperature solution method, vacuum encapsulation, hydrothermal method or room temperature solution method. Said crystal does not deliquesce in air and has good chemical stability, and thus can be used in all solid state lasers as an ultraviolet or deep ultraviolet non-linear optical crystal.

IPC Classes  ?

• C30B 29/10 - Inorganic compounds or compositions
• C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
• C30B 17/00 - Single-crystal growth on to a seed which remains in the melt during growth, e.g. Nacken-Kyropoulos method
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes
• C30B 7/04 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by evaporation of the solvent using aqueous solvents
• C01B 35/12 - Borates
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

2. No crystalline water exists in lead oxychloride, and it is stable in the air and has good thermal stability.

IPC Classes  ?

• C30B 29/12 - Halides
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
• C30B 29/22 - Complex oxides
• C01G 21/00 - Compounds of lead
• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 19/12 - Liquid-phase epitaxial-layer growth characterised by the substrate
• C30B 15/20 - Controlling or regulating
• C30B 19/04 - Liquid-phase epitaxial-layer growth using molten solvents, e.g. flux the solvent being a component of the crystal composition
• C30B 19/02 - Liquid-phase epitaxial-layer growth using molten solvents, e.g. flux
• C30B 9/06 - Single-crystal growth from melt solutions using molten solvents by cooling of the solution using as solvent a component of the crystal composition
• C30B 9/08 - Single-crystal growth from melt solutions using molten solvents by cooling of the solution using other solvents
• C30B 11/14 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method characterised by the seed, e.g. its crystallographic orientation
• C30B 15/36 - Single-crystal growth by pulling from a melt, e.g. Czochralski method characterised by the seed, e.g. its crystallographic orientation
• C30B 17/00 - Single-crystal growth on to a seed which remains in the melt during growth, e.g. Nacken-Kyropoulos method
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

Disclosed are an ammonium borofluoride compound, an ammonium borofluoride non-linear optical crystal and a preparation method and use thereof. The compound has a chemical formula of NH4B4O6F, a molecular weight of 176.28, and is prepared by a solid-phase reaction method; the crystal has a chemical formula of NH4B4O6F, a molecular weight of 176.28, and belongs to an orthorhombic system, wherein the space group is Pna21, and the lattice parameters are a = 7.615(3)Å, b = 11.207(4)Å, c = 6.604(3)Å, Z = 4 and V = 563.6Å3. By means of the method, the NH4B4O6F non-linear optical crystal with a size on a centimeter scale is obtained; the non-linear optical crystal can be used for preparing doubling frequency or tripling frequency or quadruplicating frequency or quintupling frequency or sextupling frequency harmonic wave light output of 1064 nm fundamental frequency laser output by a Nd:YAG laser or producing output of deep ultraviolet frequency doubling light lower than 200 nm or preparing a frequency doubling generator, an upper or lower frequency converter or an optical parametric oscillator. The NH4B4O6F non-linear optical crystal has the advantages of a wider light transmittance wave band, stable physical and chemical properties, a large mechanical hardness, is not easy to fracture and deliquesce, and easy for cutting, polishing and storage, etc.

IPC Classes  ?

• C01B 35/06 - Boron halogen compounds
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes
• C30B 7/14 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
• C30B 9/12 - Salt solvents, e.g. flux growth
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 29/12 - Halides
• G02F 1/35 - Non-linear optics
• G02F 1/355 - Non-linear optics characterised by the materials used
• G02F 1/37 - Non-linear optics for second-harmonic generation
• G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves

Abstract

The present invention relates to a lithium metaborate crystal and a preparation method and use thereof. The crystal has a chemical formula of LiBO2, a molecular weight of 49.75, and is a member of the monoclinic crystal system. The crystal has a P21/c space group and lattice constants of a = 5.85(8) Å, b = 4.35(7) Å, c = 6.46(6) Å, β = 115(5)°, and Z = 4. The crystal can be applied in wavelengths of infrared-visible-deep UV, and is grown utilizing a melt crystallization method or a flux method. The crystal obtained by using the method described in the present invention is easily grown and processed, and can be used in the fabrication of a polarizing beam splitting prism such as a Glan prism, a Wollaston prism, a Rochon prism or a beam-splitting polarizer, and other optical components such as an optical isolator, an optical circulator, and a beam displacer, enabling crucial applications in the fields of optics and communication.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method

Abstract

The present invention relates to a lead chlorate infrared nonlinear optical material, and the preparation method and use thereof. The general formula of the optical material is Pb2+xOCl2+2x, wherein 0＜x＜0.139 or 0.141＜x＜0.159 or 0.161＜x≤0.6. The optical crystal has no symmetrical centre and belongs to an orthorhombic crystal system, with the space group being Fmm2. The unit cell parameters comprise a=33.4963(14)±0.05Å, b=5.8320(2)±0.05Å and c=16.0912(6)±0.05Å. The crystals are grown by using a compound melt method or a co-solvent. The crystals obtained by the present invention have a relatively strong phase-matched second harmonic generation (SHG). The Kurtz powder SHG testing results show that the powder SHG of the crystals is 4 times the SHG of potassium dihydrogen phosphate (KDP), the phase matching can be achieved, and the transmission waveband is 0.34-7 μm. The laser damage threshold is 9-10 times the laser damage threshold of the current commercial infrared nonlinear optical crystal material AgGaS2. The crystals contain no crystal water, are stable in air and have a relatively good thermal stability.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method

Abstract

The present invention relates to a cesium boric silicon compound, a nonlinear optical crystal of cesium boric silicon, and a preparation method therefor and a use thereof. The cesium boric silicon compound has a chemical formula of Cs2B4SiO9 and a molecular weight of 481.15, and is prepared using a solid phase method. The nonlinear optical crystal of the cesium boric silicon compound has a chemical formula of Cs2B4SiO9 and a molecular weight of 481.15, does not have a center of symmetry, belongs to the tetragonal system with space group I4̅ and unit-cell parameters a=6.731(3)Å, c=9.871(9)Å and V=447.2(5)Å3, and has a wide transmittance range. The shortest ultraviolet cutoff edge is smaller than 190 nm, the frequency doubling effect of the crystal is 4.6 KDP, and the crystal is grown by a high-temperature solution spontaneous crystallization method and a flux method. The crystal has advantages of high growth rate, being transparent and inclusion free, low cost, having a wide transmittance range, high hardness, good mechanical property, being crack resistant and not prone to deliquescence, being easy to process and store, and the like. The crystal is widely applied to manufacturing of nonlinear optical devices such as frequency doubling generators, frequency up-converters, frequency down-converters or optical parametric oscillators.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C30B 9/12 - Salt solvents, e.g. flux growth

Abstract

4). The ultraviolet cutoff wavelength is about 170 nm. The barium fluoroborate compound is prepared by a solid-state reaction. The barium fluoroborate nonlinear optical crystal prepared by a high temperature melting liquid method has large hardness and is easy to be cut, polished and stored. This crystal can be used widely in preparing the nonlinear optical devices of the second harmonic generator, the up frequency converter, the down frequency converter or the optical parametric oscillator or the like.

IPC Classes  ?

• C01B 35/10 - Compounds containing boron and oxygen
• G02B 26/02 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light

Abstract

Disclosed are a nonlinear optical crystal of potassium chloroborate, and the production methods and uses thereof. The chemical formula of the crystal is K3B6O10Cl. The crystal without a symmetric center belongs to trigonal system with a space group of R3m and crystal lattice parameters including a=10.0624(14)Å，b=10.0624(14)Å，c=8.8361(18)Å，Z=3，V=774.8（2）Å3. The crystal exhibits a powder frequency-doubling effect 3 times as much as that of KDP (KH2PO4) and Mohs hardness of 4-5 as well as light transmission wave ranges of 165nm-3460nm. The compound of potassium chloroborate is prepared by solid phase reaction, and its nonlinear optical crystal is grown by flux method. The production method of crystal is simple and economical. The resulting crystal exhibits big size, short growth period, few wrappage and relatively high mechanical hardness, and it is apt to cut, machine, polish and store. Therefore, it can be used to produce resonant light wave outputs of duple, triple, quadruple or quintuple double-frequencies with regard to a laser beam with 1064nm wavelength.

IPC Classes  ?

• C30B 29/10 - Inorganic compounds or compositions
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

Disclosed are a barium fluoroborate compound, its nonlinear optical crystal, and the production methods and uses thereof. The chemical formula of both the compound and the crystal is Ba4B11O20F. The crystal belongs to orthorhombic system with a space group of Cmc21 and crystal lattice parameters including a=18.802(3) Å, b=10.7143(19) Å, c=8.6113(14) Å, and V=1734.7(5) Å. The crystal exhibits a powder frequency-doubling effect 10 times as much as that of KDP (KH2PO4) and an UV cut-off edge of about 170nm. The barium fluoroborate compound is prepared by solid phase reaction, and the nonlinear optical crystal of barium fluoroborate is grown by high temperature solution method. The crystal exhibits high mechanical hardness and is apt to cut, machine polish and store. Therefore, it can be used in the majority of preparation of nonlinear optical devices such as frequency-doubling generators, upper or lower frequency converters or optical parameter oscillators, or the like.

IPC Classes  ?

• C30B 29/22 - Complex oxides
• C30B 11/04 - 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
• C01F 11/02 - Oxides or hydroxides