115results about How to "Wide band of light transmission" patented technology

The invention relates to a BaCa4Se7 compound, a BaCa4Se7 nonlinear optical crystal, a preparation method and application. The BaCa4Se7 compound is prepared by adopting a solid-phase reaction, and the BaCa4Se7 nonlinear optical crystal is grown by adopting a high-temperature melt spontaneous crystallization method, a flux growth method or a Bridgman method. In the growth of the BaCa4Se7 nonlinear optical crystal, the crystal is easy to grow and transparent and has no package and the advantages of higher growing speed, low cost, easy obtaining of a crystal in a larger size, and the like. The obtained BaCa4Se7 nonlinear optical crystal has the advantages of wider optical transparency range, larger hardness, good mechanical property, difficult cracking and deliquescence, easy processing and storage, and the like. The BaCa4Se7 nonlinear optical crystal can be used for preparing a nonlinear optical device.

The invention provides a compound cesium fluoborate, a nonlinear optical crystal with the cesium fluoborate, methods for preparing the compound cesium fluoborate and the nonlinear optical crystal and application of the compound cesium fluoborate and the nonlinear optical crystal. A chemical formula of the compound is CsB<4>O<6>F, the molecular weight of the compound is 291.15, and the compound is of a crystal structure and is prepared by the aid of solid-phase synthesis processes or vacuum packaging processes. A chemical formula of the nonlinear optical crystal is CsB<4>O<6>F, the molecular weight of the nonlinear optical crystal is 291.15, the nonlinear optical crystal belongs to orthorhombic crystal systems, space groups of the nonlinear optical crystal are Pna2<1>, crystal cell parameters of the nonlinear optical crystal include that an a is equal to 7.9241 , a b is equal to 11.3996 , a c is equal to 6.6638 and an alpha, a beta and a gamma are equal to 90 degrees, and the unit cell volumes of the nonlinear optical crystal are 601.95 <3>. Frequency doubling effects of the nonlinear optical crystal is approximately two times frequency doubling effects of KH<2>PO<4> [KDP (potassium dihydrogen phosphate)], and ultrasonic absorption edges of the nonlinear optical crystal are shorter than 190 nm. The nonlinear optical crystal is grown from the CsB<4>O<6>F by the aid of melt processes, high-temperature solution processes, vacuum packaging processes, hydrothermal processes or room-temperature solution processes. The compound cesium fluoborate, the nonlinear optical crystal, the methods and the application have the advantages that the nonlinear optical crystal is free of deliquescence in air, is good in chemical stability and can be applied to all-solid-state laser devices as an ultraviolet nonlinear optical crystal or deep ultraviolet nonlinear optical crystal.

The invention relates to a BaGa2GeS6 compound, a BaGa2GeS6 nonlinear optical crystal, and a preparation method and application thereof. The BaGa2GeS6 compound is prepared by a solid reaction; and the BaGa2GeS6 nonlinear optical crystal is grown through a high-temperature melt spontaneous crystallization method or a Bridgman-Stockbarger method. In the growth of the BaGa2GeS6 nonlinear optical crystal, the crystal grows easily and is transparent without packaging; and the method has advantages of fast growth, cost low and easiness to obtain large size crystal, etc. The obtained BaGa2GeS6 nonlinear optical crystal has advantages of wide transmitting band, large hardness, good mechanical performance, invulnerability to break and deliquescence, and easiness to processing and preservation, and can be used in the production of nonlinear optical devices.

The invention relates to a compound strontium fluoborate and a strontium fluoborate nonlinear optical crystal, and preparation methods and uses thereof. The chemical formula of the compound is SrB5O7F3, the molecular weight is 310.67, and the compound is prepared by a solid phase reaction technology; and the chemical formula of the crystal is SrB5O7F3, the molecular weight is 310.67, the crystal belongs to an orthorhombic system, the space group is Ccm21, and cell parameters are as follows: a = 1.0016(6) nm, b = 0.8654(6) (4) nm, c = 0.8103(5) nm, Z = 4, and V = 0.7024(8) nm<3>. The inventionalso discloses the use of the SrB5O7F3 nonlinear optical crystal with the size being in the centimeter grade through the preparation method in the preparation of harmonic wave light output with the frequency being 2 or 3 or 4 or 5 or 6 times the frequency of 1064 nm fundamental frequency lights output by a Nd:YAG laser device or 200 nm or less deep ultraviolet frequency-doubled light output, or the use in the preparation of a frequency multiplier generator, an frequency up-converter or a frequency down-converter, or an optical parametric oscillator. The SrB5O7F3 nonlinear optical crystal has the advantages of wide light transmission band, stable physical and chemical properties, large mechanical hardness, no fragmentation or deliquescence, and easiness in cut, polishing processing and preserving.

The invention relates to lithium rubidium barium aluminum boron oxygen fluoride and lithium rubidium barium aluminum boron oxygen fluoride nonlinear optical crystal and a preparation method and use thereof. The lithium rubidium barium aluminum boron oxygen fluoride has a chemical formula of Rb3Ba3Li2Al4B6O20F and molecular weight of 1194.09 and is prepared through a solid reaction method. The lithium rubidium barium aluminum boron oxygen fluoride nonlinear optical crystal has a chemical formula of Rb3Ba3Li2Al4B6O20F, molecular weight of 905.82, belongs to a hexagonal system and a space group P-62c and has cell parameters of a=8.7017 (2) A, c=16.9807 (8) A and V=1113.51 (6) A<3>. The lithium rubidium barium aluminum boron oxygen fluoride is prepared through a solid reaction method. The lithium rubidium barium aluminum boron oxygen fluoride nonlinear optical crystal grows through a high temperature melt method, has powder frequency-doubling effect 1.5 times that of KDP(KH2PO4), has a UV cut-off edge of 190nm, has large mechanical hardness, can be cut, polished and stored easily, and can be widely used in nonlinear optical devices such as a frequency multiplication generator, an upper frequency converter, a lower frequency converter or an optical parametric oscillator.

A Na2In2GeSe6 nonlinear optical crystal and a preparation method and use thereof are disclosed; the Na2In2GeSe6 nonlinear optical crystal does not have the center of symmetry, belongs to monoclinic system, the space group is Cc, the unit cell parameters are as follows: alpha = gamma =90 degree, beta =108.70 degree, and Z= 4; the Na2In2GeSe6 can be grown by high-temperature melt spontaneous crystallization or crucible descending method; by the growth method of the Na2In2GeSe6 nonlinear optical crystal, the crystal is faster in growth rate and low in cost, a larger size crystal is easy to obtain; the resulting Na2In2GeSe6 nonlinear optical crystal has the advantages of large nonlinear optical effect, wide optical transparency band, large hardness, good mechanical properties, easy processing and the like; the Na2In2GeSe6 nonlinear optical crystal can be used to make non-linear optical components.

The invention relates to a KYSiS4 compound, a KYSiS4 nonlinear optical crystal, a preparation method and an application. The KYSiS4 compound is prepared by adopting a solid-phase reaction; the KYSiS4 nonlinear optical crystal grows by adopting a high-temperature flux spontaneous crystallization method; during the growth of the KYSiS4 nonlinear optical crystal, crystal parts grow up easily, are transparent without being packaged, and have the advantages that the growth rate is higher, the cost is low, and the crystal in larger in size can be acquired easily; and the obtained KYSiS4 nonlinear optical crystal has the advantages of wider light-transmission wave band, higher hardness, good mechanical property, uneasiness in breaking or air-slaking, easiness in processing and storage, and can be used for manufacturing nonlinear optical devices.

The invention relates to a guanidine tetrafluoroborate nonlinear optical crystal and a preparation method and application thereof. The chemical formula of the crystal is [C (NH2) 3] BF4, the molecular weight is 146.89, the crystal belongs to a trigonal system, the space group is R3m, and the cell parameters are as follows: a = 7.4634 (10) angstroms, b = 7.4634 (10) angstroms, c = 9.1216 (19) (6) angstroms and Z = 3. The ultraviolet cut-off edge is 200 nm, the frequency doubling response is 4-5 times that of a commercial nonlinear optical crystal KDP, and the crystal with the centimeter-level size is grown by adopting a hydrothermal method, a room-temperature solution method, an evaporation method or a solvothermal method; the invention relates to the application of the crystal for preparing harmonic light output with frequency doubled or frequency tripled or frequency quadrupled or frequency quintupled or frequency sextupled of 1064 nm fundamental frequency light outputted by an Nd: YAG laser, or generating ultraviolet and deep ultraviolet frequency doubled light output lower than 200 nm, or for preparing a frequency doubled generator, an upper or lower frequency converter or an optical parametric oscillator. The crystal has the advantages of wide light-transmitting wave band, stable physical and chemical properties, high mechanical hardness, difficulty in fragmentation and deliquescence, easiness in cutting, polishing, processing and storage and the like, and has important application in the fields of optics, laser lithography and communication.