Patents by Inventor Chuangtian Chen
Chuangtian Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9774162Abstract: A potassium fluoroboratoberyllate crystal oblique-incidence laser frequency multiplier, comprising: a flake-like potassium fluoroboratoberyllate crystal having parallel front and back polished surfaces; a front antireflection film and a back antireflection film; a columnar crystal support provided with a square holding slot and a light through-hole; and external heating jackets; the crystal is disposed in the square holding slot, the front and back surfaces of the crystal conforming to a main surface of the square holding slot, a normal of the main surface of the holding slot forming an angle ? with the central axis of the crystal support; a laser at a fundamental frequency passes through the front antireflection film, and a frequency-multiplied laser generated in the crystal is transmitted out through the back antireflection film. The present invention has a simple structure and a low cost, and is suitable for medium- and high-power laser systems.Type: GrantFiled: September 30, 2014Date of Patent: September 26, 2017Assignee: TECHNICAL INSTITUTE OF PHYSICS AND CHEMISTRY, CHINESE ACADEMY OF SCIENCESInventors: Chuangtian Chen, Bo Xu, Xiaoyang Wang, Feidi Fan, Lijuan Liu, Rukang Li
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Publication number: 20170170623Abstract: A potassium fluoroboratoberyllate crystal oblique-incidence laser frequency multiplier, comprising: a flake-like potassium fluoroboratoberyllate crystal having parallel front and back polished surfaces; a front antireflection film and a back antireflection film; a columnar crystal support provided with a square holding slot and a light through-hole; and external heating jackets; the crystal is disposed in the square holding slot, the front and back surfaces of the crystal conforming to a main surface of the square holding slot, a normal of the main surface of the holding slot forming an angle ? with the central axis of the crystal support; a laser at a fundamental frequency passes through the front antireflection film, and a frequency-multiplied laser generated in the crystal is transmitted out through the back antireflection film. The present invention has a simple structure and a low cost, and is suitable for medium-and high-power laser systems.Type: ApplicationFiled: September 30, 2014Publication date: June 15, 2017Applicant: TECHNICAL INSTITUTE OF PHYSICS AND CHEMISTRY, CHINESE ACADEMY OF SCIENCESInventors: Chuangtian CHEN, Bo XU, Xiaoyang WANG, Feidi FAN, Lijuan LIU, Rukang LI
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Patent number: 8773750Abstract: The present invention relates to a KBBF family nonlinear optical crystal-prism coupler and its method of fabrication. The coupler comprises: a KBBF family crystal with two smooth surfaces; transition layers each of which is deposited on respective one of the two smooth surfaces of the KBBF family crystal; and a pair of prisms each of which optically contacts with respective one of the activated transition layers. The present invention further provides a KBBF family nonlinear optical crystal-prism coupler that comprises: a KBBF family crystal with two smooth surfaces; a pair of prisms each of which has a smooth surfaces; first transition layers each of which is deposited on respective one of the two smooth surfaces of the KBBF family crystal; and second transition layers each of which is deposited on a smooth surface of respective one of the pair of prisms, wherein the first and second transition layers are integral by optical contact.Type: GrantFiled: March 21, 2012Date of Patent: July 8, 2014Assignee: Technical Institute of Physics and Chemistry, Chinese Academy of SciencesInventors: Chuangtian Chen, Yong Zhu, Feidi Fan, Xiaoyang Wang, Rukang Li
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Publication number: 20140071519Abstract: The present invention relates to a KBBF family nonlinear optical crystal-prism coupler and its method of fabrication. The coupler comprises: a KBBF family crystal with two smooth surfaces; transition layers each of which is deposited on respective one of the two smooth surfaces of the KBBF family crystal; and a pair of prisms each of which optically contacts with respective one of the activated transition layers. The present invention further provides a KBBF family nonlinear optical crystal-prism coupler that comprises: a KBBF family crystal with two smooth surfaces; a pair of prisms each of which has a smooth surfaces; first transition layers each of which is deposited on respective one of the two smooth surfaces of the KBBF family crystal; and second transition layers each of which is deposited on a smooth surface of respective one of the pair of prisms, wherein the first and second transition layers are integral by optical contact.Type: ApplicationFiled: March 21, 2012Publication date: March 13, 2014Inventors: Chuangtian Chen, Yong Zhu, Feidi Fan, Xiaoyang Wang, Rukang Li
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Patent number: 8023180Abstract: A fluoroberyllium borate non-linear optical single crystal is represented by a molecular formula of MBe2BO3F2, wherein M is Rb or Cs. The crystal can be grown by the flux method comprising the steps of mixing a fluoroberyllium borate compound and a flux in proportion, heating the mixture up to 750-800° C., keeping at this temperature and then cooling it to the temperature of 2-10° C. above the saturating point to obtain a fluoroberyllium borate solution at high temperature; putting the seed crystal fixed on the end of a crystal hanging bar into the fluoroberyllium borate solution at high temperature, rotating the crystal hanging bar, cooling the melt solution to its saturating point, then cooling it again slowly, pulling the obtained crystal out of the solution surface, cooling it to room temperature, then obtaining the present fluoroberyllium borate non-linear optical crystal.Type: GrantFiled: September 15, 2006Date of Patent: September 20, 2011Assignee: Technical Institute of Physics and Chemistry Chinese Academy of SciencesInventors: Chuangtian Chen, Xiaohong Wen, Rukang Li, Chengqian Zhang
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Publication number: 20110222143Abstract: A fluoroberyllium borate non-linear optical single crystal is represented by a molecular formula of MBe2BO3F2, wherein M is Rb or Cs. The crystal can be grown by the flux method comprising the steps of mixing a fluoroberyllium borate compound and a flux in proportion, heating the mixture up to 750-800° C., keeping at this temperature and then cooling it to the temperature of 2-10° C. above the saturating point to obtain a fluoroberyllium borate solution at high temperature; putting the seed crystal fixed on the end of a crystal hanging bar into the fluoroberyllium borate solution at high temperature, rotating the crystal hanging bar, cooling the melt solution to its saturating point, then cooling it again slowly, pulling the obtained crystal out of the solution surface, cooling it to room temperature, then obtaining the present fluoroberyllium borate non-linear optical crystal.Type: ApplicationFiled: May 23, 2011Publication date: September 15, 2011Applicant: Technical Institute of Physics and Chemistry, Chinese Academy of SciencesInventors: Chuangtian Chen, Xiaohong Wen, Rukang Li, Chengqian Zhang
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Publication number: 20100142032Abstract: A beryllium borate fluoride salt nonlinear optical crystal is represented by molecule formula Mbe2BO3F2, wherein M is Rb or Cs. The crystal is grown by melt salt method, comprising the following step, mixing beryllium borate fluoride salt with flux at appropriate ratio, rising to 750-800° C., and keeping at constant temperature, then cooling to 2-10° C. higher than saturated temperature to obtain a elevated solution; putting seed crystal on seed crystal pole into the elevated solution, rotating the seed crystal pole, cooling to saturated temperature, and then cooling slowly; raising the obtained crystal above liquid level and cooling to room temperature, then obtaining the present nonlinear optical crystal. The crystal has nonlinear optical effect, broad transmittance wave, adsorption edge of ultraviolet lower to 150 nm, doesn't deliquesce, isn't soluble to diluted hydrochloric acid and nitric acid, and has good chemical resistance.Type: ApplicationFiled: September 15, 2006Publication date: June 10, 2010Inventors: Chuangtian Chen, Xiaohong Wen, Rukang Li, Chengqian Zhang
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Patent number: 7588743Abstract: The present invention provides a cesium-rubidium-borate nonlinear optical crystal, which is represented by the chemical formula CsxRb1?xB3O5 (0<x<1), and belongs to the P212121 space group with the unit cell parameters in the following range: a=8.202-8.514 ?, b=10.075-9.140 ?, c=5.375-6.207 ? and Z=4. A preparation method of the crystal is as follows: a cesium salt, a rubidium salt and a boron-containing compound are mixed pro rata, heated, kept at a temperature, and then cooled down to obtain the cesium-rubidium-borate. The cesium-rubidium-borate and a flux are mixed and heated to form a melt to obtain a mixing melt. Then a seed crystal attached to a seed rod is dipped into the mixing melt and the seed rod is rotated simultaneously. The melt is kept at 620-780° C., and then cooled down slowly at a rate of 0-5° C. per day. The obtained crystal is drawn out of the melt surface and cooled down to room temperature. Thereby, the cesium-rubidium-borate nonlinear optical crystal is obtained.Type: GrantFiled: June 23, 2005Date of Patent: September 15, 2009Assignee: Technical Institute of Physics and Chemistry, Chinese Academy of SciencesInventors: Rukang Li, Chuangtian Chen
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Publication number: 20050286572Abstract: The present invention provides a cesium-rubidium-borate nonlinear optical crystal, which is represented by the chemical formula CsxRb1-xB3O5 (0<x<1), and belongs to the P212121 space group with the unit cell parameters in the following range: a=8.202-8.514 ?, b=10.075-9.140 ?, c=5.375-6.207 ? and Z=4. A preparation method of the crystal is as follows: a cesium salt, a rubidium salt and a boron-containing compound are mixed pro rata, heated, kept at a temperature, and then cooled down to obtain the cesium-rubidium-borate. The cesium-rubidium-borate and a flux are mixed and heated to form a melt to obtain a mixing melt. Then a seed crystal attached to a seed rod is dipped into the mixing melt and the seed rod is rotated simultaneously. The melt is kept at 620-780° C., and then cooled down slowly at a rate of 0-5° C. per day. The obtained crystal is drawn out of the melt surface and cooled down to room temperature. Thereby, the cesium-rubidium-borate nonlinear optical crystal is obtained.Type: ApplicationFiled: June 23, 2005Publication date: December 29, 2005Applicant: Technical Institute of Physics and Chemistry, Chinese Academy of SciencesInventors: Rukang Li, Chuangtian Chen
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Patent number: 6921498Abstract: The present invention relates to nonlinear optical crystals of compound Na3La9B8O27 and producing method and uses thereof. From the Na3La9B8O27 compound, large size single crystal of Na3La9B8O27 could be prepared by flux method. Na3La9B8O27 crystals are non-hygroscopic, and possess stronger nonlinear optical effect and good mechanical properties. They meet the requirements for the frequency conversion of blue—green wavelength lasers and could be used to prepare nonlinear optical devices.Type: GrantFiled: October 28, 2002Date of Patent: July 26, 2005Assignee: Technical Institute of Physics and Chemistry, CASInventors: Yicheng Wu, Guochun Zhang, Peizhen Fu, Chuangtian Chen
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Patent number: 6859305Abstract: The present invention relates to prism-nonlinear optical crystal couplers for frequency conversion, including M pieces of nonlinear optical crystal and one coupling prism stuck to the incident surface or/and exit surface of the crystal by optical stick or a matching liquid. The coupling prisms are the same triangle prisms of right triangle prism, equilateral triangle prism, or inequlateral triangle prism, or are different triangle prisms. It is hopeful to obtain frequency 6th harmonic output.Type: GrantFiled: April 18, 2002Date of Patent: February 22, 2005Assignee: Technical Institute of Physics and ChemistryInventors: Chuangtian Chen, Zuyan Xu, Junhua Lu, Guiling Wang
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Patent number: 6625186Abstract: The present invention belongs to the field of optoectronics. The main content of the present invention is to determine the optimum cut-orientations of ReCOB crystal frequency-doubling devices. For an example, the cut-angles of the YCOB crystal for 1064 nm are &thgr;1=(65.9±5.0)°, &phgr;1=(36.9±5.0)° or &thgr;2=(66.3±5)°, &phgr;2=(143.5±5)°. The present invention has solved the problem of low frequency-doubling conversion efficiency in the prior technique. The frequency-doubling technique of the present invention has advantages of high frequency-doubling conversion efficiency and low energy dissipation, and is useful for the application of the ReCOB crystal.Type: GrantFiled: June 9, 2000Date of Patent: September 23, 2003Assignees: Shandong University, Cryogenic Laboratory, Chinese Academy of SciencesInventors: Jiyang Wang, Chuangtian Chen, Zongshu Shao, Jie Jiang, Xiaobo Hu, Jiao Lin, Yaogang Liu, Ning Ye, Baichang Wu, Minhua Jiang
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Publication number: 20030085378Abstract: The present invention relates to nonlinear optical crystals of compound Na3La9B8O27 and producing method and uses thereof. From the Na3La9B8O27 compound, large size single crystal of Na3La9B8O27 could be prepared by flux method. Na3La9B8O27 crystals are non-hygroscopic, and possess stronger nonlinear optical effect and good mechanical properties. They meet the requirements for the frequency conversion of blue—green wavelength lasers and could be used to prepare nonlinear optical devices.Type: ApplicationFiled: October 28, 2002Publication date: May 8, 2003Inventors: Yicheng Wu, Guochun Zhang, Peizhen Fu, Chuangtian Chen
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Publication number: 20020154384Abstract: The present invention relates to prism-nonlinear optical crystal couplers for frequency conversion, including M pieces of nonlinear optical crystal and one coupling prism stuck to the incident surface or/and exit surface of the crystal by optical stick or a matching liquid. The coupling prisms are the same triangle prisms of right triangle prism, equilateral triangle prism, or inequilateral triangle prism, or are different triangle prisms. It is hopeful to obtain frequency 6th harmonic output.Type: ApplicationFiled: April 18, 2002Publication date: October 24, 2002Inventors: Chuangtian Chen, Zuyan Xu, Junhua Lu, Guiling Wang
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Patent number: 5523026Abstract: The present invention relates to a new type NLO crystal Strontium Beryllatoborate (Chemical formula Sr.sub.2 Be.sub.2 B.sub.2 O.sub.7, abbr. SBBO). The SBBO compound is synthesized by chemical reaction of solid state in high temperature sintering, Its chemical reaction equation is:2SrCO.sub.3 +2BeO+2H.sub.3 BO.sub.3 .fwdarw.Sr.sub.2 Be.sub.2 B.sub.2 O.sub.7 +2CO.sub.2 +3H.sub.2 OA flux method is applied to the growth of single crystal of Strontium Beryllatoborate, in which SrB.sub.2 O.sub.4, NaF and other fluorides were used as flux solvents. The result of measurement indicated that this compound has following structural and physical characteristics: space group: P6.sub.3 (C.sub.6.sup.6) point group: C .sub.6, unit cell: a=4.663(3) .ANG., c=15.311(7) .ANG.,z=2, V=283.3(.ANG.).sup.3.Type: GrantFiled: April 17, 1995Date of Patent: June 4, 1996Inventors: Chuangtian Chen, Baichang Wu, Yebin Wang, Wenrong Zeng, Linhua Yu, Qun Zou