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1. 发明授权

US5726795A Compact phase-conjugate mirror utilizing four-wave mixing in a loop configuration 失效
标题翻译：紧凑型相位共轭反射镜采用四波混频的环形结构
公开(公告)号：US5726795A
公开(公告)日：1998-03-10
申请号：US741274
申请日：1996-10-30
申请人： Alexander A. Betin , Metin S. Mangir , David A. Rockwell
发明人： Alexander A. Betin , Metin S. Mangir , David A. Rockwell
IPC分类号： G02F1/35 , H01S3/083 , H01S3/10 , H01S3/108 , G02B26/08
CPC分类号： G02F1/3538 , H01S3/083 , H01S3/10076
摘要： A compact loop four-wave mixing phase conjugator that can be used in practical optical applications comprises a reflective nonlinear cell, relay optics, an optical gain medium, and an optical diode that together form a unidirectional ring laser resonator. In operation, a signal beam .epsilon..sub.1 is directed to the nonlinear cell, where it passes through a nonlinear medium contained within the cell and is reflected out of the cell as loop beam .epsilon..sub.2. The relay optics direct loop beam .epsilon..sub.2 through the optical diode, optical gain medium, and back to the nonlinear cell, where it intersects and optically interferes with the signal beam .epsilon..sub.1 to form a refractive index grating in the nonlinear medium. The optical diode and gain medium are positioned in the loop so that an oscillation beam .epsilon..sub.3 builds up from optical noise in the resonator and oscillates in a direction counter to the propagation direction of loop beam .epsilon..sub.2. A portion of oscillation beam .epsilon..sub.3 is transmitted by the refractive index grating, reflects off the reflective portion of the nonlinear cell and emerges from the cell as phase conjugate output beam .epsilon..sub.4.
摘要翻译：可用于实际光学应用的紧凑型环路四波混频相位共轭器包括一起形成单向环形激光谐振器的反射非线性单元，中继光学器件，光学增益介质和光二极管。在操作中，信号束ε1被引导到非线性单元，其中它穿过包含在单元内的非线性介质，并且被作为环形波束ε2从单元反射出来。中继光学器件通过光学器件直接环形光束二极管，光学增益介质，并且返回到非线性单元，其中它与信号光束ε1相交并光学地干涉以在非线性介质中形成折射率光栅。光二极管和增益介质定位在环路中，使得振荡光束ε3从谐振器中的光噪声构成，并且在与环形光束ε2的传播方向相反的方向上振荡。振荡光束ε3的一部分是由折射率光栅透射，反射出非线性单元的反射部分，并从单元中作为相位共轭输出光束ε4出射。

2. 发明授权

US06346686B1 Apparatus and method for enhanced laser machining by optimization of pulse duration and spacing 有权
标题翻译：通过优化脉冲持续时间和间距来增强激光加工的装置和方法
公开(公告)号：US06346686B1
公开(公告)日：2002-02-12
申请号：US09421032
申请日：1999-10-20
申请人： Alexander A. Betin , Hans W. Bruesselbach , Metin S. Mangir
发明人： Alexander A. Betin , Hans W. Bruesselbach , Metin S. Mangir
IPC分类号： B23K2638
CPC分类号： B23K26/0622 , B23K26/382 , B23K26/40 , B23K2103/04 , B23K2103/05 , B23K2103/08 , B23K2103/10 , B23K2103/12 , B23K2103/50 , H01S3/10076 , H01S3/2316 , H01S3/2333
摘要： A laser comprising a master oscillator and a loop phase conjugate mirror (Loop-PCM) for substantially eliminating transient relaxation oscillations to instead form controlled sustained pulsations. In a preferred embodiment suitable for material processing applications with high power requirements, the master oscillator is part of a Phase Conjugate Master Oscillator Power Amplifier (PC-MOPA). A method for processing a material using a Loop-PCM by determining and using an optimal pulse fluence, duration and spacing is provided. Using pulses of the kind which are produced by the transient, and normally not desirable, relaxation oscillations common to Nd:YAG and other lasers, relaxation oscillations with controllable pulse duration, repetition rate and duty cycle are generated, making it ideal for materials processing.
摘要翻译：包括主振荡器和环路相位共轭反射镜（Loop-PCM）的激光器，用于基本上消除瞬时弛豫振荡，从而形成受控的持续脉动。在适用于具有高功率要求的材料处理应用的优选实施例中，主振荡器是相位共轭主振荡器功率放大器（PC-MOPA）的一部分。提供了一种通过确定和使用最佳脉冲注量，持续时间和间距来使用Loop-PCM处理材料的方法。使用由Nd：YAG和其他激光器共同的瞬态和通常不期望的弛豫振荡产生的脉冲，产生具有可控脉冲持续时间，重复率和占空比的弛豫振荡，使其成为材料处理的理想选择。

3. 发明授权

US5729380A Loop phase-conjugate mirror for depolarized beams 失效
标题翻译：用于去极化光束的环路相位共轭反射镜
公开(公告)号：US5729380A
公开(公告)日：1998-03-17
申请号：US741275
申请日：1996-10-30
申请人： Alexander A. Betin , Metin S. Mangir
发明人： Alexander A. Betin , Metin S. Mangir
IPC分类号： G02F1/35 , H01S3/083 , H01S3/10 , H01S3/108 , G02B26/08
CPC分类号： G02F1/3538 , H01S3/083 , H01S3/10076
摘要： A loop four-wave mixing phase conjugator that can be used with depolarized signal beams comprises a polarization separator, a polarization mixer, an optical diode, a gain medium and relay optics that together form a unidirectional laser resonator. In operation, the polarization separator separates a signal beam .epsilon..sub.1 into orthogonally polarized signal beam components .epsilon..sub.11 and .epsilon..sub.12 and directs them to a nonlinear medium. The components propagate through the nonlinear medium and emerge as loop beam .epsilon..sub.2, with orthogonally polarized components .epsilon..sub.2 and .epsilon..sub.22. The polarization mixer mixes the energy from the two orthogonally polarized loop beam components, and relay optics direct the loop beam components back to the nonlinear medium at an angle with respect to the input beam. The loop beam components intersect and optically interfere with signal beam components .epsilon..sub.11 and .epsilon..sub.22 in the nonlinear medium to form gratings. The optical diode and gain medium are positioned in the optical loop so that an oscillation beam .epsilon..sub.3 builds up from optical noise in the resonator and oscillates in a direction counter to the propagation direction of loop beam components .epsilon..sub.21 and .epsilon..sub.22. A portion of oscillation beam .epsilon..sub.3 is transmitted by the gratings, and exits the optical loop as an output beam .epsilon..sub.4. .epsilon..sub.3 is phase conjugate to the input beam .epsilon..sub.1 in both the spatial and polarization senses.
摘要翻译：可以与去极化信号光束一起使用的环路四波混频相位共轭器包括一起形成单向激光谐振器的偏振分离器，偏振混频器，光二极管，增益介质和中继光学器件。在操作中，偏振分离器将信号光束ε1分离成正交偏振信号光束分量ε11和ε12，并将它们引导到非线性介质。这些分量通过非线性介质传播并出现为环形光束ε2，具有正交极化分量ε2和ε22。偏振混频器混合来自两个正交极化环形光束分量的能量，并且中继光学器将环形光束分量反馈回非线性介质相对于输入光束成一定角度。环路光束分量与非线性介质中的信号光束分量ε11和ε22相交并光学地干扰以形成光栅。光二极管和增益介质被定位在光环路中，使得振荡光束ε3从谐振器中的光噪声构成，并且在与环形光束分量ε21和ε22的传播方向相反的方向上振荡。振荡光束ε3由光栅传输，并作为输出光束ε4离开光环路.ε3在空间和极化感测中都与输入光束epsilon 1相位共轭。

4. 发明授权

US08565272B2 Method and apparatus for generation and amplification of light in a semi-guiding high aspect ratio core fiber 有权
公开(公告)号：US08565272B2
公开(公告)日：2013-10-22
申请号：US13534410
申请日：2012-06-27
申请人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
发明人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
IPC分类号： H01S3/30
CPC分类号： H01S3/06704 , H01S3/06708 , H01S3/06729 , H01S3/094019
摘要： A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings adapted to form reflective boundaries at fast-axis boundaries of the core, and a material adapted to minimize reflections at slow-axis boundaries of the core. In an illustrative embodiment, the laser gain medium is an optical fiber. The core and claddings form a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium is employed as a laser oscillator, a high reflectivity mirror and an outcoupler are positioned at opposite ends of the core to form a laser resonator adapted to control modes in the slow-axis direction.

5. 发明申请

US20090041061A1 Method and apparatus for generation and amplification of light in a semi-guiding high aspect ratio core fiber 有权
标题翻译：用于在半导向高纵横比芯纤维中产生和放大光的方法和装置
公开(公告)号：US20090041061A1
公开(公告)日：2009-02-12
申请号：US11891328
申请日：2007-08-09
申请人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
发明人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
IPC分类号： H01S3/063 , G02B6/036 , C03B37/07 , G02B6/26
CPC分类号： H01S3/06704 , H01S3/06708 , H01S3/06729 , H01S3/094019
摘要： A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings adapted to form reflective boundaries at fast-axis boundaries of the core, and a material adapted to minimize reflections at slow-axis boundaries of the core. In an illustrative embodiment, the laser gain medium is an optical fiber. The core and claddings form a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium is employed as a laser oscillator, a high reflectivity mirror and an outcoupler are positioned at opposite ends of the core to form a laser resonator adapted to control modes in the slow-axis direction.
摘要翻译：平面激光增益介质和激光系统。新颖的激光增益介质包括具有快轴尺寸和慢轴尺寸的高纵横比横截面的活性芯，适于在芯的快轴边界处形成反射边界的信号包层，以及适于以使芯的慢轴边界处的反射最小化。在说明性实施例中，激光增益介质是光纤。芯和包层形成适于控制在快轴方向上传播的模式的波导。当激光增益介质用作激光振荡器时，高反射镜和外耦合器位于芯的相对端，以形成适于控制慢轴方向的激光谐振器。

6. 发明授权

US07983312B2 Method and apparatus for generation and amplification of light in a semi-guiding high aspect ratio core fiber 有权
标题翻译：用于在半导向高纵横比芯纤维中产生和放大光的方法和装置
公开(公告)号：US07983312B2
公开(公告)日：2011-07-19
申请号：US11891328
申请日：2007-08-09
申请人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
发明人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
IPC分类号： H01S3/30 , H01S3/098
CPC分类号： H01S3/06704 , H01S3/06708 , H01S3/06729 , H01S3/094019
摘要： A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings adapted to form reflective boundaries at fast-axis boundaries of the core, and a material adapted to minimize reflections at slow-axis boundaries of the core. In an illustrative embodiment, the laser gain medium is an optical fiber. The core and claddings form a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium is employed as a laser oscillator, a high reflectivity mirror and an outcoupler are positioned at opposite ends of the core to form a laser resonator adapted to control modes in the slow-axis direction.
摘要翻译：平面激光增益介质和激光系统。新颖的激光增益介质包括具有快轴尺寸和慢轴尺寸的高纵横比横截面的活性芯，适于在芯的快轴边界处形成反射边界的信号包层，以及适于以使芯的慢轴边界处的反射最小化。在说明性实施例中，激光增益介质是光纤。芯和包层形成适于控制在快轴方向上传播的模式的波导。当激光增益介质用作激光振荡器时，高反射镜和外耦合器位于芯的相对端，以形成适于控制慢轴方向的激光谐振器。

7. 发明授权

US08705918B2 Multi-sectional fiber laser system with mode selection 有权
标题翻译：多模光纤激光系统，具有模式选择
公开(公告)号：US08705918B2
公开(公告)日：2014-04-22
申请号：US13308400
申请日：2011-11-30
申请人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
发明人： Vladimir V. Shkunov , Alexander A. Betin , David A. Rockwell
IPC分类号： G02B6/42 , G02B6/43
CPC分类号： H01S3/06704 , H01S3/06708 , H01S3/06729 , H01S3/094019
摘要： A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings adapted to form reflective boundaries at fast-axis boundaries of the core, and a material adapted to minimize reflections at slow-axis boundaries of the core. In an illustrative embodiment, the laser gain medium is an optical fiber. The core and claddings for a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium is employed as a laser oscillator, a high reflectivity mirror and an outcoupler are positioned at opposite ends of the core to form a laser resonator adapted to control modes in the slow-axis direction.
摘要翻译：平面激光增益介质和激光系统。新颖的激光增益介质包括具有快轴尺寸和慢轴尺寸的高纵横比横截面的活性芯，适于在芯的快轴边界处形成反射边界的信号包层，以及适于以使芯的慢轴边界处的反射最小化。在说明性实施例中，激光增益介质是光纤。适用于控制在快轴方向传播的模式的波导的核心和包层。当激光增益介质用作激光振荡器时，高反射镜和外耦合器位于芯的相对端，以形成适于控制慢轴方向的激光谐振器。

8. 发明授权

US08284480B2 Laser amplified power extraction enhancement system and method 有权
标题翻译：激光放大功率提取增强系统及方法
公开(公告)号：US08284480B2
公开(公告)日：2012-10-09
申请号：US12860615
申请日：2010-08-20
申请人： Alexander A. Betin , Vladimir V. Shkunov
发明人： Alexander A. Betin , Vladimir V. Shkunov
IPC分类号： H01S3/06
CPC分类号： H01S3/2333 , H01S3/005 , H01S3/0085 , H01S3/08095 , H01S3/10076
摘要： A high extraction efficiency laser system. The novel laser system includes a laser amplifier and a laser source adapted to provide a laser beam to the amplifier such that polarization states for incident and reflected light within the amplifier are perpendicular one to another. In an illustrative embodiment, the laser beam is input to the amplifier such that the beam reflects back and forth between the side walls of the amplifier with an angle of incidence of about 45 degrees, and the laser beam is linearly polarized in the plane of incidence. This arrangement reduces interference fringes in the amplifier. In an alternative embodiment, the system includes an aberrator adapted to add time-varying aberrations in the laser beam at a rate exceeding an inversed lifetime of an inverted population in the amplifier to increase spatial homogenization of saturation and extraction patterns in the amplifier.
摘要翻译：高提取效率激光系统。新颖的激光系统包括激光放大器和适于向放大器提供激光束的激光源，使得放大器内的入射和反射光的偏振状态彼此垂直。在说明性实施例中，激光束被输入到放大器，使得光束以大约45度的入射角在放大器的侧壁之间来回反射，并且激光束在入射平面中线性偏振。这种布置减少了放大器中的干扰条纹。在替代实施例中，系统包括像差器，其适于以超过放大器中的反相群体的反相寿命的速率在激光束中增加时变像差，以增加放大器中的饱和度和提取模式的空间均匀化。

9. 发明授权

US07760789B2 High energy solid-state laser with offset pump and extraction geometry 有权
标题翻译：具有偏移泵和提取几何形状的高能固态激光器
公开(公告)号：US07760789B2
公开(公告)日：2010-07-20
申请号：US12004193
申请日：2007-12-20
申请人： Kalin Spariosu , Alexander A. Betin
发明人： Kalin Spariosu , Alexander A. Betin
IPC分类号： H01S3/09
CPC分类号： H01S3/0941 , F41H13/00 , H01S3/0404 , H01S3/042 , H01S3/0604 , H01S3/0608 , H01S3/0612 , H01S3/0625 , H01S3/07 , H01S3/094053 , H01S3/094057 , H01S3/094084 , H01S3/102 , H01S3/1026 , H01S3/1608 , H01S3/1643
摘要： A laser system and method. The inventive laser includes an annular gain medium; a source of pump energy; and an arrangement for concentrating energy from the source on the gain medium. In a more specific implementation, a mechanism is included for rotating the gain medium to effect extraction of pump energy and cooling. In the illustrative embodiment, the pump source is a diode array. Energy from the array is coupled to the medium via an array of optical fibers. The outputs of the fibers are input to a concentrator that directs the pump energy onto a pump region of the medium. In the best mode, plural disks of gain media are arranged in an offset manner to provide a single resonator architecture. First and second mirrors are added to complete the resonator. In accordance with the inventive teachings, a method for pumping and cooling a laser is taught. In the illustrative embodiment, the inventive method includes the steps of providing a gain medium; pumping energy into a region of the gain medium; moving the medium; extracting energy from the region of the medium; and cooling region of the medium.
摘要翻译：激光系统和方法。本发明的激光器包括环形增益介质; 泵能源; 以及用于将来自源的能量集中在增益介质上的布置。在更具体的实施方案中，包括用于旋转增益介质以实现泵能量和冷却的提取的机制。在说明性实施例中，泵浦源是二极管阵列。来自阵列的能量通过光纤阵列耦合到介质。纤维的输出被输入到将泵浦能量引导到介质的泵区域上的浓缩器。在最佳模式中，增益介质的多个磁盘以偏移方式排列以提供单个谐振器结构。添加第一和第二反射镜以完成谐振器。根据本发明的教导，教导了用于泵送和冷却激光器的方法。在说明性实施例中，本发明的方法包括提供增益介质的步骤; 将能量泵入增益介质的区域; 移动媒体; 从介质区域提取能量; 和介质的冷却区域。

10. 发明申请

US20100150191A1 Solid-state suspension laser 有权
标题翻译：固态悬浮激光
公开(公告)号：US20100150191A1
公开(公告)日：2010-06-17
申请号：US12592232
申请日：2009-11-20
申请人： Alexander A. Betin , Kalin Spariosu
发明人： Alexander A. Betin , Kalin Spariosu
IPC分类号： H01S3/00
CPC分类号： H01S3/0602 , H01S3/02 , H01S3/0612 , H01S3/1603 , H01S3/169 , H01S3/20
摘要： A solid-state suspension laser. The novel laser includes a gain medium comprised of a plurality of solid-state gain particles suspended in a fluid. The laser also includes a pump source for pumping the gain particles and a resonator for amplifying and outputting laser light generated by the gain medium. In an illustrative embodiment, the gain medium is adapted to flow, and the pumping of the gain medium occurs outside of the resonator. The flow velocities and the densities of the gain particles in the gain medium can be optimized for optimal absorption efficiency during the pumping and/or for optimal extraction efficiency in the resonator as well as for overall laser performance optimization, including power, efficiency and beam quality scalability.
摘要翻译：固态悬浮激光器。新型激光器包括由悬浮在流体中的多个固态增益粒子组成的增益介质。激光器还包括用于泵浦增益粒子的泵浦源和用于放大和输出由增益介质产生的激光的谐振器。在说明性实施例中，增益介质适于流动，并且增益介质的泵浦发生在谐振器外部。可以优化增益介质中增益粒子的流速和密度，以实现在泵浦期间的最佳吸收效率和/或谐振器中的最佳提取效率以及整体激光性能优化，包括功率，效率和光束质量可扩展性。

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