101results about How to "Nonlinear Optical Performance Improvement" patented technology

The invention relates to an inorganic nonlinear optical material lead iodo-borate crystal, and a preparation method and application thereof, belonging to the field of inorganic chemistry as well as the field of material science. The chemical formula of the lead iodo-borate crystal is Pb2B5O9I, and the molecular weight is 739.35; the lead iodo-borate crystal belongs to an orthorhombic crystal system and a space group Pnn2; and the unit cell parameters are as followings: alpha = 90 DEG, beta = 90 DEG, gamma = 90 DEG, and Z = 4. The lead iodo-borate crystal is synthesized by a one-step self fluxing method, which comprises the following steps: mixing lead raw materials consisting of oxide, lead iodide and boron oxide with self flux consisting of PbO and B2O3 which are 50-150% excess, wherein the molar ratio of of PbO:PbI:B2O3 is 3:1:5; adding the mixture to a vacuum sealed container; insulating heat at 700-900 DEG C for 5-48 hours; and slowly cooling to room temperature at the speed of lower than 10 DEG C / hour to obtain an end product lead iodo-borate crystal. The lead iodo-borate crystal has excellent nonlinear optical performance, and the second harmonic generation (SHG) coefficient of the crystal powder is 1.4 times that of KTP (kalium titanium phosphate).

The invention discloses a hemicyanine fluorescent dye and a preparation method and application of the hemicyanine fluorescent dye. The hemicyanine fluorescent dye is obtained through the steps of adding 4-methylpyridine and N, N-diethyl-benzaldehyde into n-butanol according to the mole ratio of one to one, enabling the mixture to react for 4 hours to 6 hours at the temperature ranging from 100 DEG C to 105 DEG C, then, adding 2-chloroethylaminehydrochloride with the molar weight same as the molar weight of the 4-methylpyridine to the solution, enabling the mixture to react at the temperature ranging from 75 DEG C to 80 DEG C, and conducting column chromatography isolation. The hemicyanine fluorescent dye is simple in preparation process and high in productivity, and has good linear optical performance and non-linear optical performance. The dye simultaneously contains cation dye functional groups N<+> and crosslinking dye functional groups NH[2], can be used for dyeing of acrylic fibers, cotton fibers, silk fibers and wool fibers, and is wide in application range. The produced obtained through dyeing is bright in color and good in fluorescence effect.

The invention discloses a crystal material. The crystal material is characterized in that a chemical formula of the crystal material is BaCdSnS4; the crystal material belongs to Fdd2 space groups of orthorhombic crystal systems. The crystal material has the advantages that the crystal material can be used as a nonlinear optical crystal, nonlinear effects of the crystal materials are 1-5 times nonlinear effects of commercial AgGaS2, a laser induced damage threshold of the crystal material is 1-8 times a laser induced damage threshold of the commercial AgGaS2, and the crystal material is a novel intermediate and far infrared nonlinear crystal material with a large nonlinear coefficient and the high laser induced damage threshold.

The invention relates to an infrared non-linear optical material Ba3AGa5Se10Cl2 and a preparation method thereof. The infrared non-linear optical material Ba3AGa5Se10Cl2 is synthesized by a high-temperature solid phase synthesis method by reacting at the temperature of 850 DEG C for 100 hours. In the invention, a novel infrared non-linear optical crystal Ba3AGa5Se10Cl2 (A=Cs, Rb and K) belongs to a tetragonal system space group; Ba3CsGa5Se10Cl2 has high non-linear performance; during primary measurement, the particle size of the material of 2.05 micrometers is between 46 and 74 micrometers, and the non-linear coefficient of the material is 13.6 times that of a commercial material AgGaS2; and the material can have potential non-linear optical application value.

The invention is a nonlinear optical crystal Se2B2O7, belonging to nonlinear optical material and its synthesis. And its chemical formula: molecular weight of Se2B2O7, 291.54, belonging to orthogonal crystal system, space group, P212121, and unit cell parameters: a= 7.4815(6),b=7.8984(5),c=9.0478(7), alpha=90degree, beta=90degree, gamma=90degree, V=534.65(7)3, and Z=4. And it is prepared by high temperature solid phase process. And it has excellent nonlinear optical performance, and SHG coefficient of its powder is 2.2 times greater than that of KDP and equivalent to that of LBO.

The invention relates to nonlinear optical crystal plumbum-lanthanum iodate which belongs to a nonlinear optical material and synthesis thereof. The plumbum-lanthanum iodate has a chemical formula of La3Pb3O(IO3)13 and the molecular weight of 3328, belongs to the trigonal system and has a space group of R3c and unit cell parameters that a is 22.234(2), b is 22.234(2), c is 13.702(1)*, Alpha and Beta are respectively 90 degrees, Gamma is 120 degrees, V is 5866(1)*3 and Z is 6. The plumbum-lanthanum iodate (La3Pb3O(IO3)13) is prepared by a hydrothermal method and has good nonlinear optical performance, and the SHG coefficient of plumbum-lanthanum iodate powder is two times of that of KDP and equivalent to that of LBO.

The invention relates to a porphyrin-structure-unit-containing porous network conjugated polymer and a preparation method thereof, belonging to the technical field of functional high-polymer materials. The invention aims to obtain a nonlinear optical material with higher chemical stability and heat resistance. The porous network conjugated polymer is formed by connecting a porphyrin structure unit to a high-polymer main chain framework. The preparation method comprises the following steps: carrying out polycondensation reaction on carboxyl porphyrin derivatives and small molecules containing diamido and dihydroxy groups to prepare the polymer. Compared with the porphyrin small molecules, the content of the pi-electron conjugated system is enhanced. When the porous network conjugated polymer is used as the nonlinear optical material, the macroscopic nonlinear coefficient and nonlinear optical properties of the material are greatly enhanced, and the porous network conjugated polymer has higher chemical stability and heat resistance. Therefore, the porphyrin-structure-unit-containing porous network conjugated polymer has wide application prospects in the fields of optoelectronic industry, micro-electronic industry, communication and the like when being used as the nonlinear optical material.

The invention relates to a non-linear optical crystal of iodic acid zinc potassium. The iodic acid zinc potassium has a chemical formula of K2Zn(IO3)4(H2O)2 and the molecular weight of 864.74 and belongs to a monoclinic system; and the iodic acid zinc potassium has a space group C2 and unit-cell parameters are as follows: a is equal to 13.936 (6), b is equal to 7.7609(18), alpha and gamma are both equal to 90 degrees, beta is 126.75(3) degrees and Z is 1. The iodic acid zinc potassium is prepared by using a hydrothermal method. The iodic acid zinc potassium (K2Zn(IO3)4(H2O)2) has excellent non-linear optical performance and the powder second harmonic generation (SHG) coefficient of the iodic acid zinc potassium is 2.3 times that of KDP (KH2PO4) and is equivalent to that of LBO (lithium triborate).

The invention discloses a non-linear optical material, namely a lead bismuth phosphate crystal, and relates to the field of non-linear optical materials. A chemical formula of lead bismuth phosphate is Pb3Bi (PO4)3; the molecular weight is 2230.98; the lead bismuth phosphate belongs to a cubic crystal system; the space group is I43d; and single-cell parameters, namely alpha, beta and gamma are 90.00 degrees, and Z is equal to 2. The lead bismuth phosphate crystal is prepared by adopting a high-temperature solid-state method. The lead bismuth phosphate has excellent non-linear optical performance; a powder secondary harmonic generation (SHG) coefficient of the lead bismuth phosphate is three times that of potassium dihydrogen phosphate (KDP); and the lead bismuth phosphate crystal can be used for deep water communication of submarines, laser blinding weapons, marine fish detection, optical disk recording, color laser printing, laser projection televisions, and optical computing or optical fiber communication.

The invention relates to nonlinear optical crystal caesium borogermanate which belongs to a nonlinear optical material and synthesis thereof. The crystal has a chemical formula of CsGeB3O7 and the molecular weight of 249.93, belongs to a rhombic system and has a space group of Pna21 and unit cell parameters that a is 9.542(3)*, b is 9.823(3)*, c is 7.009(2)*, V is 6557.0(3)*3, and Z is 4. The caesium borogermanate (CsGeB3O7) is prepared by a high-temperature solid phase method and has good nonlinear optical performance, and the SHG coefficient of e caesium borogermanate powder is 1.5 times of that of KDP.

The invention relates to a nonlinear optical crystal molybdenum manganese selenite which is characterized in that the chemical formula of the nonlinear optical crystal is Mn(MoO3)(SeO3)(H2O); the molecular weight is 342.85; the crystal belongs to the orthorhombic system; the space group is Pmc21; and the unit cell parameters as follows: a=7.054(3), b=6.480(2), c=12.735(5), alpha=90 degrees, beta=90 degrees, gamma=90 degrees, V=582.1(4) and Z=4. The crystal is prepared by the hydrothermal method. The molybdenum manganese selenite, namely Mn(MoO3)(SeO3)(H2O) has good nonlinear optical property; and the power second harmonic generation (SHG) coefficient is as triple as potassium dihydrogen phosphate (KDP).

The invention relates to infrared non-linear optical crystals Ln4GaSbS9, and belongs to the field of inorganic non-linear optical materials. The crystals are synthesized by an inorganic solid phase one-step synthesis method. The synthetic condition is that the reaction is performed for 5 days at the temperature of 950 DEG C. A molecular formula of the crystals is Ln4GaSbS9, wherein Ln is one of Pr, Nd, Sm, Gd, Tb, Dy and Ho; the crystals belong to an orthorhombic system; and the space group is Aba2. Sm4GaSbS9 has excellent nonlinear optical properties; and the powder second harmonic generation (SHG) coefficient of the Sm4GaSbS9 is 2 times that of potassium dihydrogen phosphate (KDP).

The present invention relates to one kind of polyurethane-imide (PUI) material and it preparation process and application. The PUI material is prepared in N, N-dimethyl formamide (DMF) solvent with TDI and DR-19 or DR-1 with active hydroxyl radical, and through pre-polymerization to form pre-polymer with non-linear chromogenic molecule and -NCO terminal, and the subsequent polycondensation reaction of the pre-polymer and maleic anhydride monomer first at 40-110 deg.c for 40 min to 4 hr and then reflux at 90-200 for 1-5 hr. The PUI material as one polymer material containing non-linear optical radical has non-linear optical property, high heat stability and great thermo-optical coefficient, and may find broad application in integrated optics, logic optics, thermo-optical switch, etc.

The invention relates to the technical field of perovskite material preparation, in particular to organic-inorganic hybrid perovskite and a preparation method and application thereof. The organic-inorganic hybrid perovskite material is smooth in surface, uniform in diameter distribution, and good in semiconductor performance and nonlinear optical performance, can be used for preparing nonlinear optical devices and energy storage materials, and is applied to the dielectric switch field. According the preparation method, metal halides or metal oxides are utilized; a composite crystal material is formed by self-assembly of organic small molecules and inorganic molecules by using 3-hydroxypyrrolidine as the raw material, such that the composite crystal material has the mechanical stability and the thermal stability of the inorganic components, and further has the workability and the photoelectric function of the organic components, and the preparation method has characteristics of simpleness and low cost, and can be used for large-scale preparation.

The invention relates to a high-damage-threshold laser film technological method, and belongs to the field of optical film plating. The invention aims to overcome the defect that the laser damage resistance threshold of a laser film plated in visible light and near-infrared bands by a conventional laser film plating technology is relatively low. Quartz or K9 is used as a coating substrate, sapphire is used as a substrate film material M, HfO2 is used as a high-refractive-index film material H, SiO2 is used as a low-refractive-index film material L, and TFC is used for giving geometric thicknesses and film system sequence calculation results of all layers of film systems; ultrasonic cleaning and heating baking are carried out on the coating substrate; in an optical film layer bonding bottoming process and a stress matching process, three film materials are sequentially put into an electronic gun evaporation source crucible boat, and then a coating process is completed according to the geometric thickness of each layer of film system and the sequence of the film systems; and the coating substrate is bombarded by using an ion source before coating and in the coating process. The filmlayer is hard, firm, excellent in laser damage resistance and good in permeability, and can be used for a long time in a severe field environment.

The invention provides an optical crystal bismuth cadmium borate compounded by three chromophores, and relates to the field of non-linear optical materials. The chemical formula of the bismuth cadmium borate is Cd3BiO(BO3)3, and the molecular weight is 851.05; the bismuth cadmium borate belongs to a monoclinic system, and the space group is Cm; the unit cell parameters are that: a is 8.044(2), b is 15.913(5), c is 3.4891(10) angstrom, alpha is 90.00 degrees, beta is 100.08(2) degrees, gamma is 90.00 degrees, V is 439.7(2) angstrom<3>, and Z is 2. The non-linear optical crystal bismuth cadmium borate is prepared by a high-temperature solid state method. The bismuth cadmium borate has excellent non-linear optical performance, and the second harmonic generation (SHG) coefficient of the bismuth cadmium borate powder is six times that of potassium dihydrogen phosphate (KDP).

The invention discloses a nonlinear optical crystal Rb4Ge3B6O17 and belongs to a nonlinear optical material and synthesis for the nonlinear optical material. The chemical formula of the crystal is Rb4Ge3B6O17, the molecular weight is 896.51, the crystal belongs to a monoclinic system, a space group is Cc, and unit cell parameters are that alpha is equal to 90 degrees, beta is equal to 103.723 (5) degrees, gama is equal to 90 degrees and Z is equal to 4. The crystal is prepared by a high-temperature solid-phase method. The Rb4Ge3B6O17 has excellent nonlinear optical performance, and a second harmonic generation (SHG) coefficient of crystal powder is 1.3 times that of potassium dihydrogen phosphate (KDP).

The invention discloses a nonlinear optical crystal vanadium thallium iodate. The invention discloses a nonlinear optical crystal vanadium thallium iodate. The nonlinear optical crystal vanadium thallium iodate has a chemical formula of Tl (VO2) 2 (IO3) 3 and molecular weight of 894.97, belongs to orthorhombic system and space group Ima2, and has unit cell parameters as follows: a = 14.1143 (17), Angstrom, b=10.2116 (12), Angstrom, C=8.0319 (9), Angstrom, alpha=beta=gamma=90 DEG C, V=1157.6 (2), and Angstrom<3>, Z=4. The nonlinear optical crystal vanadium thallium iodate is prepared by a hydrothermal method. The vanadium thallium iodate [Tl(VO2)2(IO3)3] has excellent nonlinear optical performance, and SHG coefficient of a vanadium thallium iodate powder is similar to that of KTP.

The invention relates to a preparation method and application of a nonlinear optical crystal Pb2NbO2(SeO3)2Cl. The compound belongs to a monoclinic system, its space group is P21, the cell parameters are a=8.5110(5) angstroms, b=5.4148(2) angstroms, c=10.7300(6) angstroms, beta=111.753(7)<o>, and Z=2, the crystal cell volume V is 459.28(4) angstrom<3>. The compound is prepared by a hydrothermal method. The powder second-harmonic-generation (SHG) coefficient of the Pb2NbO2(SeO3)2Cl is about 2.3 times of that of KDP(KH2PO4).

The invention provides a polymer film containing alkene telluride. The polymer film is used for a saturable absorber and comprises a polymer film base and the alkene telluride doped in the polymer film base, wherein the alkene telluride has excellent light absorption efficiency and saturated absorption characteristics. The alkene telluride and light are resonantly enhanced by the aid of quantum confinement effects and edge effects, so that laser in an energy band is strongly absorbed, the light absorption rate of the polymer film is one order of magnitudes higher than that of a conventional two-dimensional material, the alkene telluride distributed in the polymer film base can efficiently, uniformly and stably absorb the laser, the polymer film base is good in flexibility, the stability ofthe polymer film containing the alkene telluride is improved, the service life of the polymer film containing the alkene telluride is prolonged, and the polymer film can achieve an extensive application prospect in the saturable absorber and a passively mode-locked laser device.

There is provided an organic nonlinear optical material including a polymer binder and a compound represented by the following Formula (I):wherein, in Formula (I),R1 and R2 each independently represent a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group;R3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; andL represents a divalent linking group connecting a nitrogen atom and an oxopyrroline ring having a dicyanomethylidene group in a π-conjugated system containing an azo group (—N═N—).

The invention relates to non-linear optical crystal, in particular to tellurous acid vanadium cadmium, which belongs to the non-linear optical material and the synthesis thereof. The chemical formula of the crystal is Cd4V2Te3O15; the molecular weight is 1174.28; the crystal belongs to the orthohombic system; the space group is P212121; the unit cell parameters are: a is equal to 1174.28, b is equal to 16.0478(11), c is equal to 16.2349(11), alpha is equal to 90 DEG, beta is equal to 90 DEG, gamma is equal to 90 DEG, V is equal to 1406.70(17)3, and Z is equal to 4. The crystal is prepared by adopting a high temperature solid-state method. The tellurous acid vanadium cadmium (Cd4V2Te3O15) has excellent non-linear optical property, and the powder SHG coefficient is equivalent to KDP coefficient.

The invention discloses a nonlinear optical crystal, which has a crystal structure the same as that of a YCa4O(BO3)3 crystal, and belongs to the field of a Cm space group and an m point group. The nonlinear optical crystal is a samarium-yttrium-calcium-oxygen borate crystal; the chemical formula of the nonlinear optical crystal is SmxY1-xCa4O(BO3)3, wherein x is more than 0 and less than 1; and the nonlinear optical crystal is obtained through a pulling method by adopting CaCO3, Y2O3, Sm2O3 and H3BO3 in stoichiometric proportion. The samarium-yttrium-calcium-oxygen borate crystal disclosed by the invention has good nonlinear optical property, can be used for manufacturing a laser nonlinear optical device and can increase the transformation and amplification efficiency of the laser nonlinear optical device by absorbing idler-frequency light with a specific wavelength.

The invention discloses a lithium-containing crystalline material, and a preparation method and application thereof, and belongs to the technical field of second-order nonlinear optical materials and preparation. The lithium-containing crystal material has a chemical formula AxBayLiz(Ga4S7)n, wherein A is selected from at least one of K, Rb and Cs, x+2y+z=2n, and n is an integer among 2-7. The method comprises: reacting a raw material containing a barium element, a galium element, a sulfur element, a lithium element and AX under a vacuum condition at a reaction temperature, and cooling, wherein X in AX is selected from one of F, Cl, Br and I. The lithium-containing crystalline material disclosed by the invention has improved infrared nonlinear optical properties and can be applied to lasers. The method disclosed by the invention has the advantage of simple process steps, the obtained crystalline material is high in purity, good in crystallinity and high in yield, and is suitable for large-scale industrial production.

The invention relates to a method for preparing a lead fluoroborate single crystal by a microwave hydrothermal method. The method is a preparation method which can be implemented by one step in a liquid phase and used for growing lead fluoroborate nonlinear optical crystals by the microwave hydrothermal method by adoption of the microwave hydrothermal method and by use of a microwave quick and efficient heating mode. The lead fluoroborate single crystal prepared by the method is excellent in nonlinear optical performance; the powder frequency-doubled effect is four times better than that of KDP (KH2PO<-4>); the stop edge of an ultraviolet region is about 195nm. Furthermore, the lead fluoroborate single crystal prepared by the microwave hydrothermal method is complete in crystal form and uniform in size, is easy to cut, polish and store and can be widely applied to the preparation of nonlinear optical devices such as a frequency doubling generator, an upper or lower frequency doubling converter and an optical parameter amplifier. The method disclosed by the invention has the characteristics that the raw materials are readily available, the equipment cost is low, the operation is simple, and the experiment period is shorter.

The invention discloses a TeO2-SiO2 composite sol and a preparation method thereof, the molar percentage of all the component of the sol is: TeO2 is 2 percent to 80 percent; SiO2 is 20 percent to 98 percent, and a sol-gel method is used for firstly preparing precursor sols of TeO2 and SiO2 respectively, and then the TeO2 sol and the SiO2 sol are mixed, and the stable and transparent TeO2-SiO2 composite sols with different molar ratios are prepared after being stirred and added with acid. The preparation method of the invention can obtain the TeO2-SiO2 composite sol which has wide TeO2 doping concentration range, wherein, the high doped TeO2 sol is very important for preparing TeO2 based high performance nonlinear optical materials, such as TeO2 based films, TeO2 based glasses, etc. The sol-gel method of the invention is simple in technology, mild in reaction condition, even in product components, high in purity and low in consumption.

The invention relates to the field of nano photocatalysis materials, and discloses a photocatalyst. The photocatalyst comprises a nano wire KNb3O8 and silver nano particles covering the surface of the nano wire KNb3O8. The photocatalyst is prepared by covering the surface of the nano wire KNb3O8 with the silver nano particles by an oxidation-reduction method. The preparation method is easy to operate, high in repetitiveness and low in cost. The photocatalyst disclosed by the invention is high in photocatalysis and high in nonlinear optical coefficient and can be widely applied to dye sewage treatment, energy storage, light waveguide, frequency doubling and holographic storage equipment.

The invention relates to the field of inorganic nonlinear optical materials, in particular to lead-gallium-germanium-sulfur crystal and a preparing method and application thereof. The chemical formula of the lead-gallium-germanium-sulfur crystal is PbGa2GeS6, the lead-gallium-germanium-sulfur crystal belongs to the orthorhombic system, the space group is Fdd2, and the unit cell parameters are (the parameters are shown in the description). The crystal has good nonlinear optical performance, the powder frequency doubling strength of the crystal is half that of AgGaS2, and the laser-damaged threshold value of the crystal is 5 times that of AgGaS2.

The invention relates to a fluoro mixed metal salt nonlinear optical crystal material and preparation and application thereof. The chemical formula of the crystal material is Ba(MoO2F)2(XO3)2, and X is Se or Te. Compared with the prior art, the crystal material has excellent nonlinear optical performance, the frequency multiplication intensity of the powder can reach 3-4 times of that of KH2PO4 crystals with the same particle size under 1064nm laser irradiation, and the laser damage threshold measured under laser with the wavelength of 1064nm is 53-60 times of that of a commercialized infraredsecond-order nonlinear material AgGaS2. In addition, the crystal material is excellent in transmission performance in an ultraviolet-visible light region and an infrared region (0.3-10 [mu]m), and has a wide application prospect in the fields of laser frequency conversion, photoelectric modulation, laser signal holographic storage and the like.

The invention belongs to a nonlinear optical glass-ceramics material field, which relates to an environment-friendly type infrared frequency doubling chalcogenide glass ceramic, and the environment-friendly type infrared frequency doubling chalcogenide glass-ceramics is characterized in that the component of the glass-ceramics can be expressed as the chemical formula of (100 percent-x) GeS2.xAgGaS2, wherein, x stands for a molar percentage of AgGaS2, and x equals to 5 percent to 52 percent (molar), and (100 percent-x) stands for the molar percentage of GeS2. The environmental-friendly type infrared frequency doubling chalcogenide glass ceramic takes the chalcogenide glass as a fundamental glass, and the chalcogenide glass takes four high pure raw materials Ge, Ga, Ag and S as essential components and is obtained by melting in vacuum, and then the chalcogenide glass carries out nucleation under the condition of being slightly lower than the glass transition temperature and then the temperature is raised to carry out crystallization, and a large amount of environment-friendly type infrared frequency doubling chalcogenide glass ceramics with even-distributed submicron order size and excellent infrared frequency doubling performance are precipitated. The glass ceramic prepared by the invention which is stable in physicochemical performance, good in water resistance and high in glass transition temperature is non-toxic and environment friendly, and the glass ceramic which is provided with wide permeation windows and a frequency doubling performance can be applied for the technical field of an infrared wave band light variable frequency, such as frequency doubling, difference frequency, sum frequency and light parameter oscillation etc,.