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1. 发明授权

US11133641B1 Terahertz laser device based on zinc oxide phonon vibration optically excited at room temperature 有权
公开(公告)号：US11133641B1
公开(公告)日：2021-09-28
申请号：US17335624
申请日：2021-06-01
申请人： Nanjing University
发明人： Xinglong Wu , Run Yang , Yixian Wang , Jiancang Shen
IPC分类号： H01S3/30 , H01S4/00 , H01S3/094 , H01S3/0943 , H01S3/08 , H01S3/091 , H01S3/108 , H01S5/22 , G01N21/65 , H01S3/09 , H01S5/042
摘要： Disclosed is a terahertz laser device based on phonon vibration excitation, including a resonant cavity composed of a hollow waveguide made of a composite film and optical lenses at both ends of the waveguide, where M represents nano-metal particles. A zinc oxide mesomorphic microsphere is used herein as a source, symmetric stretching vibration of nanosheets on the zinc oxide microsphere is excited and induced by a laser and is transmitted through elastic and electric coupling among the nanosheets, and a terahertz wave with a frequency of 0.36 THz is radiated by means of phonon vibration; moreover, the zinc oxide mesomorphic microspheres and the nano-metal particles are mixed evenly to produce a strong local electric field a few nanometers nearby a surface of the metal particle by taking advantage of a surface-enhanced Raman effect of the nano-metal particles, a nanocantilever of the ZnO mesomorphic microsphere is greatly changed in polarizability with ample contact of the nano-metal particles and the ZnO mesomorphic microspheres, and thus the terahertz radiation power thereof is enhanced.

2. 发明授权

US10170883B1 Method for direct compression of laser pulses with large temporal ratios 有权
公开(公告)号：US10170883B1
公开(公告)日：2019-01-01
申请号：US15851484
申请日：2017-12-21
申请人： Robert O. Hunter, Jr.
发明人： Robert O. Hunter, Jr.
IPC分类号： H01S3/10 , H01S3/00 , H01S3/102 , H01S3/30 , H01S3/22 , H01S3/094 , H01S3/0943 , H01S3/23 , H01S3/108 , H01S3/225
摘要： The present architecture utilizes a Nonlinear Scattering Aperture Combiner that does not need to be optically multiplexed and then drives a Direct Compressor stage that produces a large temporal compression ratio to pump a Fast Compressor. This eliminates the need for a separate array of ATDMs, multiplexing optical elements, and, at the approximate 107 joule energy output required for ICF, reduces the number of mechanical elements and gas interfaces from the order of 103 to about 10. In addition, this provides a large reduction of the volume of the gas containment region. In order to accomplish this, a technique for transversely segmenting by color and/or polarization of the optical extraction beams of the Direct Compressor has been invented. In particular, it emphasizes the simplicity and uniqueness of design of the Direct Compressor. The Direct Compressor is unique in terms of high fluence, high temporal compression ratios, and high stage gain, leading to a very large reduction in laser costs. It may separately have many other applications than ICF.

3. 发明授权

US5379315A Semiconductor laser pumped multiple molecular gas lasers 失效
标题翻译：半导体激光泵浦多分子气体激光器
公开(公告)号：US5379315A
公开(公告)日：1995-01-03
申请号：US980020
申请日：1992-11-23
申请人： Richard A. Meinzer
发明人： Richard A. Meinzer
IPC分类号： H01S3/0943 , H01S3/094 , H01S3/0941 , H01S3/223 , H01S5/40 , H01S3/22
CPC分类号： H01S3/223 , H01S3/0941 , H01S3/094053 , H01S5/4012 , H01S5/4025
摘要： A gas laser cavity 44 comprises a first (pumped) molecular gas 52 and a second (lasing) molecular gas 52, such as Hydrogen Halides. The first gas is pumped by a plurality of semiconductor lasers 20 which provide light carried along optical fibers 26 that provide divergent light 32 to a collimating lens 34 that provides collimated light 36 to a focussing lens 38 that provides pumping light 40 which propagates within the gas laser cavity 44 in a zig-zag pattern, thereby providing a homogeneously excited medium and providing sufficient pathlength to give adequate absorption of the pump light. The pump light 40 has a wavelength within the absorption frequency band of the first gas 52 and a wavelength capable of pumping the first gas molecules from the ground state to an excited state. The energy of the first gas transfers to the second gas and lasing occurs in the second gas. Thus, the pumped gas may be selected based on absorption of the pumping light and the lasing gas selected based on the desired output lasing wavelength.
摘要翻译：气体激光腔44包括第一（泵浦）分子气体52和第二（激光）分子气体52，例如卤化氢。第一气体被多个半导体激光器20泵送，这些半导体激光器20提供沿着光纤26携带的光，光纤26将发散光32提供给准直透镜34，准直透镜34将准直光36提供给聚焦透镜38，聚焦透镜38提供在气体内传播的泵浦光40 激光腔44以锯齿形图案，从而提供均匀激发的介质并提供足够的光程以给泵浦光充分吸收。泵浦光40具有在第一气体52的吸收频带内的波长和能够将第一气体分子从基态泵浦到激发态的波长。第一气体的能量转移到第二气体和激光发生在第二气体中。因此，抽吸气体可以基于基于期望的输出激光波长选择的泵浦光和激光气体的吸收来选择。

4. 发明申请

US20200274314A1 System and Method for Pumping Laser Sustained Plasma with Interlaced Pulsed Illumination Sources 审中-公开
公开(公告)号：US20200274314A1
公开(公告)日：2020-08-27
申请号：US16791488
申请日：2020-02-14
申请人： KLA Corporation
发明人： Ilya Bezel , Matthew Derstine , William Schumaker , Michael Friedmann
IPC分类号： H01S3/0943 , F21V9/06
摘要： A system for pumping laser sustained plasma is disclosed. The system includes a plurality of pump modules configured to generate respective pulses of pump illumination for the laser sustained plasma, wherein at least one pump module is configured to generate a train of pump pulses that is interlaced in time with another train of pump pulses generated by at least one other pump module of the plurality of pump modules. The system further includes a plurality of non-collinear illumination paths configured to direct the respective pulses of pump illumination from the plurality of pump modules into a collection volume of the laser sustained plasma.

5. 发明授权

US09673588B1 Techniques and apparatus for managing lasing gas concentrations 有权
公开(公告)号：US09673588B1
公开(公告)日：2017-06-06
申请号：US14063736
申请日：2013-10-25
申请人： Xemed LLC
发明人： F. William Hersman , David W. Watt
IPC分类号： H01S3/036 , H01S3/032 , H01S3/227 , H01S3/041 , H01S3/04 , H01S3/0941 , H01S3/0943
CPC分类号： H01S3/031 , H01S3/032 , H01S3/0346 , H01S3/036 , H01S3/0405 , H01S3/041 , H01S3/0941 , H01S3/0943 , H01S3/104 , H01S3/227
摘要： Techniques and architecture are disclosed for managing alkali vapor concentration in a lasing gas at non-condensing levels. In some instances, the disclosed techniques/architecture can be used to control and/or stabilize the concentration of alkali vapor in a lasing gas volume to any desired fraction of its saturation value under dynamically changing thermal loads. In some such instances, the concentration of alkali vapor in a given lasing gas volume can be maintained at a value which is sufficiently far from the saturation point to prevent or otherwise reduce condensation of the alkali vapor, for example, upon accelerating the lasing gas through a pressure drop into an optical pumping cavity of an alkali vapor laser system (e.g., such as a diode-pumped alkali laser, or DPAL, system). In some instances, the disclosed techniques/architecture can be used to establish a temperature gradient and/or an alkali vapor concentration gradient in the flowing lasing gas volume.

6. 发明授权

US09590380B2 Laser oscillator provided with blower 有权
标题翻译：激光振荡器配有鼓风机
公开(公告)号：US09590380B2
公开(公告)日：2017-03-07
申请号：US15040121
申请日：2016-02-10
申请人： FANUC CORPORATION
发明人： Akihiko Nishio
IPC分类号： H01S3/22 , H01S3/036 , H01S3/134 , H01S3/106 , H01S3/0943 , H01S3/104 , H01S3/041
CPC分类号： H01S3/036 , H01S3/041 , H01S3/0943 , H01S3/104 , H01S3/1067 , H01S3/134 , H01S3/22
摘要： There was the problem that the pressure of the laser medium rises from the target value by the heat when generating laser light. The laser oscillator includes a controller, laser medium flow path, resonator part, blower, pressure detecting part, laser medium supply-exhaust part, and temporary stop command part. The controller controls the resonator part to stop to generate laser light if a temporary stop is commanded, controls the blower 18 to slow the rotational speed of the blower from the first rotational speed to the second rotational speed, and controls the laser medium supply-exhaust part so that the pressure is the second target value lower than the pressure at the time when the rotational speed of the blower is the second rotational speed.
摘要翻译：存在当产生激光时激光介质的压力从目标值通过热量升高的问题。激光振荡器包括控制器，激光介质流路，谐振器部分，鼓风机，压力检测部分，激光介质供给排气部分和临时停止命令部分。如果命令临时停止，控制器控制谐振器部分停止产生激光，控制鼓风机18将鼓风机的旋转速度从第一转速减慢到第二转速，并控制激光介质供给排气使得压力是比鼓风机的转速为第二转速时的压力低的第二目标值。

7. 发明申请

US20160301182A1 Optically Pumped Microplasma Lasers 有权
标题翻译：光泵浦微型激光器
公开(公告)号：US20160301182A1
公开(公告)日：2016-10-13
申请号：US14168851
申请日：2014-01-30
申请人： Physical Sciences, Inc.
发明人： W. Terry Rawlins , Steven J. Davis
IPC分类号： H01S3/0943 , H01S3/22 , H01S3/16 , H01S3/23
CPC分类号： H01S3/0943 , H01S3/073 , H01S3/095 , H01S3/2207 , H01S3/2237
摘要： A laser and methods for providing a continuous wave output beam. The laser and method includes positioning a micro-plasma chip capable of creating micro-plasmas within a resonant cavity. A gas is input into the resonant cavity and flows around the micro-plasma chip. Micro-plasmas ignite and excite the gas to create metastables. The metastables are further excited by an optical pump having an energy sufficient to cause the metastables to lase.
摘要翻译：激光和提供连续波输出光束的方法。激光和方法包括定位能够在谐振腔内产生微等离子体的微等离子体芯片。气体被输入谐振腔并流过微等离子体芯片。微等离子体点燃并激发气体以产生亚稳态。亚稳态由具有足以引起亚稳态引起的能量的光泵进一步激发。

8. 发明申请

US20130003775A1 CO2 laser 有权
标题翻译： CO2激光器
公开(公告)号：US20130003775A1
公开(公告)日：2013-01-03
申请号：US13385698
申请日：2012-03-02
申请人： Robert Neil Campbell
发明人： Robert Neil Campbell
IPC分类号： H01S3/0943
CPC分类号： H01S3/1616 , H01S3/094003 , H01S3/094096 , H01S3/0941 , H01S3/2232 , H01S3/2308 , H01S3/2375 , H01S3/2391
摘要： Efficient laser diode excited Thulium (Tm) doped solid state systems, directly matched to a combination band pump transition of Carbon Dioxide (CO2), have matured to the point that utilization of such in combination with CO2 admits effectively a laser diode pumped CO2 laser. The laser diode excited Tm solid state pump permits Continuous Wave (CW) or pulsed energy application. Appropriate optical pumping admits catalyzer free near indefinite gas lifetime courtesy of the absence of significant discharge driven dissociation and contamination. As a direct consequence of the preceding arbitrary multi isotopologue CO2, symmetric and asymmetric, gas mixes may be utilized without significant degradation or departure from initial mix specifications. This would admit, at raised pressure, a system continuously tunable from ˜9 μm to ˜11.5 μm, or sub picosecond amplification. This methodology offers advantages in regards scalability, pulse energy and power over alternative non linear conversion techniques in access to this spectral region.
摘要翻译：激发二极管激光二极管激发的钍（Tm）掺杂的固态系统直接与二氧化碳（CO2）的组合带泵转换相匹配，已经成熟到与二氧化碳的结合使用有效地允许激光二极管泵浦CO2激光器。激光二极管激光Tm固态泵允许连续波（CW）或脉冲能量应用。适当的光泵浦允许在无限期气体寿命期间自由的催化剂，由于没有显着的放电驱动的解离和污染。作为上述任意多同位素二氧化碳的直接后果，可以使用对称和不对称气体混合物，而不会显着降低或偏离初始混合物规格。这将承认，在升高的压力下，系统可以从〜9μm连续调节到〜11.5μm，或者是皮秒级放大。该方法在可访问该光谱区域时在可扩展性，脉冲能量和功率方面提供了优于替代非线性转换技术的优点。

9. 发明申请

US20080279228A1 Optically Pumped Alkali Laser and Amplifier Using Helium-3 Buffer Gas 有权
标题翻译：使用氦-3缓冲气体的光泵浦碱性激光和放大器
公开(公告)号：US20080279228A1
公开(公告)日：2008-11-13
申请号：US12055408
申请日：2008-03-26
申请人： Raymond J. Beach , Ralph Page , Thomas Soules , Eddy Stappaerts , Sheldon Shao Quan Wu
发明人： Raymond J. Beach , Ralph Page , Thomas Soules , Eddy Stappaerts , Sheldon Shao Quan Wu
IPC分类号： H01S3/098 , H01S3/0943
CPC分类号： H01S3/227 , H01S3/036 , H01S3/06741 , H01S3/094057 , H01S3/109 , H01S3/1106 , H01S3/1317
摘要： In one embodiment, a laser oscillator is provided comprising an optical cavity, the optical cavity including a gain medium including an alkali vapor and a buffer gas, the buffer gas including 3He gas, wherein if 4He gas is also present in the buffer gas, the ratio of the concentration of the 3He gas to the 4He gas is greater than 1.37×10−6. Additionally, an optical excitation source is provided. Furthermore, the laser oscillator is capable of outputting radiation at a first frequency. In another embodiment, an apparatus is provided comprising a gain medium including an alkali vapor and a buffer gas including 3He gas, wherein if 4He gas is also present in the buffer gas, the ratio of the concentration of the 3He gas to the 4He gas is greater than 1.37×10−6. Other embodiments are also disclosed.
摘要翻译：在一个实施例中，提供了包括光学腔的激光振荡器，所述光学腔包括包括碱性蒸汽和缓冲气体的增益介质，所述缓冲气体包括3 H 3气体，其中如果< 在缓冲气体中也存在He气体，He气体浓度与He 3 He气体的比例大于1.37×10 3， SUP> -6 。另外，提供光激励源。此外，激光振荡器能够以第一频率输出辐射。在另一个实施方案中，提供了一种装置，其包括包含碱性蒸气和包括3 H 3 He气体的缓冲气体的增益介质，其中如果在缓冲液中还存在4 H 4气体气体中，3 H He气体与4 H He气体的浓度之比大于1.37×10 -6。还公开了其他实施例。

10. 发明申请

US20050271109A1 VERY NARROW BAND, TWO CHAMBER, HIGH REP-RATE GAS DISCHARGE LASER SYSTEM 有权
标题翻译：非常窄带，两个室，高倍率气体放电激光系统
公开(公告)号：US20050271109A1
公开(公告)日：2005-12-08
申请号：US11199691
申请日：2005-08-09
申请人： David Knowles , Daniel Brown , Herve Besaucele , David Myers , Alexander Ershov , William Partlo , Richard Sandstrom , Palash Das , Stuart Anderson , Igor Fomenkov , Richard Ujazdowski , Eckehard Onkels , Richard Ness , Scot Smith , William Hulburd , Jeffrey Oicles
发明人： David Knowles , Daniel Brown , Herve Besaucele , David Myers , Alexander Ershov , William Partlo , Richard Sandstrom , Palash Das , Stuart Anderson , Igor Fomenkov , Richard Ujazdowski , Eckehard Onkels , Richard Ness , Scot Smith , William Hulburd , Jeffrey Oicles
IPC分类号： H01S1/00 , G01J1/42 , G01J9/00 , G03F7/20 , H01S3/00 , H01S3/03 , H01S3/036 , H01S3/038 , H01S3/04 , H01S3/041 , H01S3/08 , H01S3/0943 , H01S3/097 , H01S3/0971 , H01S3/0975 , H01S3/102 , H01S3/104 , H01S3/105 , H01S3/1055 , H01S3/11 , H01S3/13 , H01S3/131 , H01S3/134 , H01S3/137 , H01S3/139 , H01S3/22 , H01S3/223 , H01S3/225 , H01S3/23
CPC分类号： G01J1/4257 , G03F7/70025 , G03F7/70041 , G03F7/70333 , G03F7/70483 , G03F7/70575 , G03F7/70933 , H01S3/005 , H01S3/0057 , H01S3/02 , H01S3/03 , H01S3/036 , H01S3/038 , H01S3/0385 , H01S3/0387 , H01S3/0404 , H01S3/041 , H01S3/08004 , H01S3/08009 , H01S3/08036 , H01S3/0943 , H01S3/097 , H01S3/09702 , H01S3/09705 , H01S3/0971 , H01S3/0975 , H01S3/104 , H01S3/105 , H01S3/1055 , H01S3/1305 , H01S3/134 , H01S3/137 , H01S3/139 , H01S3/22 , H01S3/2207 , H01S3/223 , H01S3/225 , H01S3/2251 , H01S3/2256 , H01S3/2258 , H01S3/2333 , H01S3/2366
摘要： An oscillator-amplifier gas discharge laser system and method is disclosed which may comprise a first laser unit which may comprise a first discharge region which may contain an excimer or molecular fluorine lasing gas medium; a first pair of electrodes defining the first discharge region containing the lasing gas medium, a line narrowing unit for narrowing a spectral bandwidth of output laser light pulse beam pulses produced in said first discharge region; a second laser unit which may comprise a second discharge chamber which may contain an excimer or molecular fluorine lasing gas medium; a second pair of electrodes defining the second discharge region containing the lasing gas medium; a pulse power system providing electrical pulses to the first pair of electrodes and to the second pair of electrodes producing gas discharges in the lasing gas medium between the respective first and second pair of electrodes, and laser parameter control mechanism modifying a selected parameter of a selected laser output light pulse beam pulse produced by said gas discharge laser system by controlling the timing of the occurrence of the gas discharge between the first pair of electrodes and the occurrence of the gas discharge between the second pair of electrodes.
摘要翻译：公开了一种振荡放大器气体放电激光器系统和方法，其可以包括第一激光器单元，该第一激光器单元可以包括可包含受激准分子或分子氟激光气体介质的第一放电区域; 限定含有激光气体介质的第一放电区域的第一对电极，用于使在所述第一放电区域中产生的输出激光脉冲光束脉冲的光谱带宽变窄的线窄化单元; 第二激光单元，其可以包括可包含受激准分子或分子氟激光气体介质的第二放电室; 限定包含所述激光气体介质的所述第二放电区域的第二对电极; 脉冲功率系统，其向所述第一对电极和所述第二对电极提供电脉冲，在所述相应的第一和第二对电极之间的所述激光气体介质中产生气体放电，以及激光参数控制机构修改所选择的所选择的参数通过控制第一对电极之间的气体放电的发生时间和第二对电极之间的气体放电的发生的时间，由所述气体放电激光系统产生的激光输出光脉冲束脉冲。

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