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1. 发明申请

US20090022201A1 Alkali-Vapor Laser with Transverse Pumping 审中-公开
标题翻译：碱性蒸汽激光与横向泵送
公开(公告)号：US20090022201A1
公开(公告)日：2009-01-22
申请号：US12122524
申请日：2008-05-16
申请人： William F. Krupke , Jason Stuart Zweiback , Alexander A. Betin
发明人： William F. Krupke , Jason Stuart Zweiback , Alexander A. Betin
IPC分类号： H01S3/0933 , H01S3/09
CPC分类号： H01S3/031 , H01S3/0941 , H01S3/227
摘要： Alkali-vapor laser and related methods of lasing are described herein. In some embodiments, a diode-pumped gas-vapor laser is provided that can be scaled to high power. For example, in one embodiment, a triply-transverse configuration of a diode-pumped-alkali-laser (DPAL) is disclosed in which alkali-buffer gain medium is flowed through an laser chamber (for example, configured as an optical resonator or amplifier) whose optical axis is nominally transverse to the flow direction, and whose pump array radiation is propagated into the alkali-buffer gain medium in a direction nominally transverse to both the direction of gain medium flow and the direction of the optical axis.
摘要翻译：这里描述了碱蒸气激光器和相关的激光方法。在一些实施例中，提供二极管泵浦的气体 - 蒸汽激光器，其可以被缩放到高功率。例如，在一个实施例中，公开了二极管泵浦碱激光器（DPAL）的三重横向配置，其中碱缓冲增益介质流过激光室（例如，配置为光学谐振器或放大器），其光轴标称横向于流动方向，并且其泵阵列辐射沿着标称横向于增益介质流的方向和光轴方向的方向传播到碱缓冲增益介质中。

2. 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.

3. 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。

4. 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。

5. 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。

6. 发明授权

US07626759B2 Outcoupler with Bragg grating and system and method using same 有权
标题翻译：带有布拉格光栅的外耦合器及其使用的系统和方法
公开(公告)号：US07626759B2
公开(公告)日：2009-12-01
申请号：US11405199
申请日：2006-04-17
申请人： Alexander A. Betin , Oleg M. Efimov
发明人： Alexander A. Betin , Oleg M. Efimov
IPC分类号： H01S3/00
CPC分类号： H01S3/235 , H01S3/08009 , H01S3/083 , H01S3/10076 , H01S3/2316 , H01S5/50
摘要： An outcoupler having a wavelength selective, angle sensitive element or Bragg grating and an arrangement for maintaining the element in a predetermined orientation relative to an incident beam of electromagnetic energy. The Bragg grating may be reflective or transmissive. The inventive outcoupler may be used to implement a phase conjugate master oscillator power amplifier with an oscillator; a resonator in operational alignment with the oscillator; and an outcoupler in alignment with the oscillator. In the best mode, second and third Bragg gratings are included within the oscillator and the resonator, respectively.
摘要翻译：具有波长选择性，角度敏感元件或布拉格光栅的输出耦合器和用于将元件相对于电磁能的入射光束保持在预定取向的布置。布拉格光栅可以是反射的或透射的。本发明的输出耦合器可用于实现具有振荡器的相位共轭主振荡器功率放大器; 与振荡器工作对准的谐振器; 以及与振荡器对准的输出耦合器。在最佳模式下，第二和第三布拉格光栅分别包括在振荡器和谐振器内。

7. 发明授权

US06965472B2 Nonreciprocal optical element with independent control of transmission opposite directions 有权
标题翻译：不可逆光学元件，独立控制传输方向相反
公开(公告)号：US06965472B2
公开(公告)日：2005-11-15
申请号：US10806717
申请日：2004-03-22
申请人： Oleg M. Efimov , Alexander A. Betin
发明人： Oleg M. Efimov , Alexander A. Betin
IPC分类号： G02B6/26 , G02F1/09 , G02F1/095 , H04B10/18 , G02B5/30 , G02B27/28
CPC分类号： G02F1/093 , G02B6/2746 , Y10S359/90
摘要： A nonreciprocal optical element and method for operating it to effect separate control of intensity and phase (or optical path length) of counter propagating beams over a very wide range. The nonreciprocal optical element includes a circulator for routing a first signal from a first port to a second port and a second signal from the second port to a third port, a third signal from the third port to a fourth port and a fourth signal from the fourth port to the first port; a first mirror for reflecting a signal output by the second port back into the second port; and second mirror for reflecting a signal output by the fourth port back into the fourth port. Polarization rotation elements such as quarter-wave plates are disposed between the mirrors and the second and fourth ports to preserve the polarization of the input beams. Filters are disposed between these ports and mirrors to adjust the transmittance of the input and output signals. An arrangement is included for translating the positions of the mirrors relative to the ports to adjust the phase of the output signals. Independent spectral control is effected by providing a Bragg grating, interference filter or other spectral filter between the second or fourth ports and the mirror associated therewith.
摘要翻译：一种不可逆光学元件和方法，用于对非常宽的范围内的反向传播光束的强度和相位（或光程长度）进行单独的控制。不可逆光学元件包括用于将第一信号从第一端口路由到第二端口的循环器和从第二端口到第三端口的第二信号，从第三端口到第四端口的第三信号和来自第二端口的第四信号第一口港口; 用于将由第二端口输出的信号反射回第二端口的第一反射镜; 以及用于将由第四端口输出的信号反射回第四端口的第二反射镜。诸如四分之一波片的偏振旋转元件设置在反射镜和第二和第四端口之间以保持输入光束的偏振。过滤器设置在这些端口和反射镜之间，以调节输入和输出信号的透射率。包括用于平移反射镜相对于端口的位置以调整输出信号的相位的布置。独立的光谱控制通过在第二或第四端口和与之相关联的反射镜之间提供布拉格光栅，干涉滤光片或其他光谱滤光片来实现。

8. 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。

9. 发明授权

US07742512B2 Scalable laser with robust phase locking 有权
标题翻译：具有坚固相位锁定功能的可扩展激光器
公开(公告)号：US07742512B2
公开(公告)日：2010-06-22
申请号：US10771047
申请日：2004-02-02
申请人： Kalin Spariosu , Alexander A. Betin
发明人： Kalin Spariosu , Alexander A. Betin
IPC分类号： H01S3/13 , H01S3/10 , H01S3/091 , H01S3/08
CPC分类号： H01S3/067 , H01S3/0675 , H01S3/08045 , H01S3/0805 , H01S3/09415 , H01S3/1608 , H01S3/1643 , H01S3/2383
摘要： A robust scalable laser. The laser includes plural fiber laser resonators. A cavity that is external to the fiber laser resonators combines plural laser beams output from the plural fiber laser resonators into a single output laser beam. In a specific embodiment, the plural fiber laser resonators are eye-safe double-clad Er:YAG laser resonators that are pumped via laser diode arrays.
摘要翻译：强大的可扩展激光。激光器包括多个光纤激光谐振器。在光纤激光谐振器外部的空腔将从多个光纤激光谐振器输出的多个激光束组合成单个输出激光束。在具体实施例中，多个光纤激光谐振器是通过激光二极管阵列泵浦的眼睛安全的双包层Er：YAG激光谐振器。

10. 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。

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