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21. 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。

22. 发明授权

US5963574A Compact diode pumped solid state laser 失效
标题翻译：紧凑型二极管泵浦固体激光器
公开(公告)号：US5963574A
公开(公告)日：1999-10-05
申请号：US63082
申请日：1998-04-21
申请人： Eduard Gregor , Tzeng Chen , Hans W. Bruesselbach
发明人： Eduard Gregor , Tzeng Chen , Hans W. Bruesselbach
IPC分类号： H01S3/02 , H01S3/042 , H01S3/06 , H01S3/08 , H01S3/0941 , H01S3/091
CPC分类号： H01S3/0941 , H01S3/025 , H01S3/042 , H01S3/061 , H01S3/0612 , H01S3/0625 , H01S3/08059 , H01S3/08072 , H01S3/094084
摘要： A compact diode pumped laser including a nonuniform, single-or double-sided diode pumped laser head and a polarization output coupled (POC) resonator. The POC resonator employs reflections from two opposing uncrossed roof prism mirrors to produce a uniform near field and far field beam with diffraction or near diffraction limited quality. The single laser head particularly includes a laser rod, a sapphire envelope located about the rod, an area of antireflection coating located on the sapphire envelope between the rod and the diode array, and a high reflectivity nickel-plated indium layer located on the sapphire envelope on the surface thereof outside of the area of antireflection coating.
摘要翻译：一种紧凑型二极管泵浦激光器，包括不均匀，单面或双面二极管泵浦激光头和极化输出耦合（POC）谐振器。 POC谐振器采用来自两个相对的未交叉屋顶棱镜镜的反射，以产生具有衍射或近衍射限制质量的均匀近场和远场光束。单个激光头特别包括激光棒，位于棒周围的蓝宝石外壳，位于棒和二极管阵列之间的蓝宝石外壳上的防反射涂层区域和位于蓝宝石外壳上的高反射率镀镍铟层在防反射涂层区域外的表面上。

23. 发明授权

US5208881A Method and apparatus for optical beam combination and cleanup using stimulated scattering 失效
标题翻译：用于光束组合和使用受激散射的清理的方法和装置
公开(公告)号：US5208881A
公开(公告)日：1993-05-04
申请号：US810980
申请日：1991-12-20
申请人： Hans W. Bruesselbach
发明人： Hans W. Bruesselbach
IPC分类号： G02B6/34 , H01S3/00 , H01S3/30
CPC分类号： H01S3/302 , H01S3/005
摘要： An optical beam is made closer to diffraction limited by coupling it into a multi-mode guide, such as an optical fiber, of sufficient length to generate a stimulated Brillouin scattering (SBS) return beam with improved divergence. For this purpose the term .DELTA.kL is made substantially greater than .pi., where .DELTA.k is the difference in propagation vectors between the input and SBS beams, and L is the mutual interaction length of the input and SBS beams within the fiber. Beam amplification can also be provided by coupling a plurality of low power input beams that have respective wavelengths within the fiber's SBS linewidth into the fiber so that each of the input beams transfers energy into the SBS beam, which emerges with a power greater than that of any of its inputs. The beam cleanup and amplification functions are capable of operating with continuous wave or pulsed inputs.
摘要翻译：通过将光束耦合到具有足够长度的多模引导件（例如光纤）中，使光束更接近衍射，以产生具有改善的发散的受激布里渊散射（SBS）返回光束。为此，术语DELTA kL基本上大于pi，其中ΔTAk是输入和SBS波束之间的传播矢量的差，L是光纤内的输入和SBS波束的相互作用长度。光束放大还可以通过将具有光纤SBS线宽内的各个波长的多个低功率输入光束耦合到光纤中来提供，使得每个输入光束将能量传递到SBS光束中，SBS光束的功率大于其任何投入。光束清除和放大功能能够连续波或脉冲输入。

24. 发明授权

US08120843B1 Dark channel array with scattering centers 失效
标题翻译：具有散射中心的暗沟道阵列
公开(公告)号：US08120843B1
公开(公告)日：2012-02-21
申请号：US12413465
申请日：2009-03-27
申请人： Monica L. Minden , Hans W. Bruesselbach , Oleg M. Efimov , Shuoqin Wang , Daniel Yap
发明人： Monica L. Minden , Hans W. Bruesselbach , Oleg M. Efimov , Shuoqin Wang , Daniel Yap
IPC分类号： H01S5/00 , H01S3/00
CPC分类号： H01S5/4068 , H01S5/405 , H01S5/423
摘要： In one of the embodiments, a dark channel array is provided which includes gain channels, each configured to emit an output beam from an output surface and to have a light wave propagating therethrough. It further includes a dark channel configured to emit an output beam from the output surface of the dark channel array and to have a light wave propagating in the dark channel, such that output beams from the plurality of gain channels are coherently coupled in phase with each other. The dark channel array is configured such that the dark channel captures a portion of the output beam from at least two of the plurality of gain channels by radiant coupling.
摘要翻译：在其中一个实施例中，提供了一个暗通道阵列，其包括增益通道，每个通道被配置为从输出表面发射输出光束并且具有通过其传播的光波。它还包括配置成从暗通道阵列的输出表面发射输出光束并且具有在暗通道中传播的光波的暗通道，使得来自多个增益通道的输出光束与每个其他。暗通道阵列被配置为使得暗通道通过辐射耦合捕获来自多个增益通道中的至少两个的输出光束的一部分。

25. 发明授权

US07532392B1 Dark channel array 失效
标题翻译：暗渠道阵列
公开(公告)号：US07532392B1
公开(公告)日：2009-05-12
申请号：US11392140
申请日：2006-03-29
申请人： Monica L. Minden , Hans W. Bruesselbach , Oleg M. Efimov , Shuoqin Wang , Daniel Yap
发明人： Monica L. Minden , Hans W. Bruesselbach , Oleg M. Efimov , Shuoqin Wang , Daniel Yap
IPC分类号： H01S5/00 , H01S3/00
CPC分类号： H01S5/4068 , H01S5/405 , H01S5/423
摘要： In one embodiment, a dark channel array is provided which includes gain channels, each gain channel being configured to emit an output beam, and which includes a dark channel configured to cause output beams from the gain channels to be coherently couple in phase with each other.
摘要翻译：在一个实施例中，提供了包括增益通道的暗通道阵列，每个增益通道被配置为发射输出光束，并且其包括配置成使来自增益通道的输出光束相互相互耦合的暗通道。

26. 发明授权

US4734911A Efficient phase conjugate laser 失效
标题翻译：高效相位共轭激光器
公开(公告)号：US4734911A
公开(公告)日：1988-03-29
申请号：US839475
申请日：1986-03-14
申请人： Hans W. Bruesselbach
发明人： Hans W. Bruesselbach
IPC分类号： H01S3/10 , H01S3/23 , H01S3/30 , H01S3/13
CPC分类号： H01S3/2333 , H01S3/10076
摘要： A laser apparatus (10) utilizing a master oscillator power amplifier configuration wherein a master oscillator (12) provides a source of low energy, high phase front quality, and high spectral purity radiation, injected into at least one lasing medium gain element (14) disposed along an optical path. Coupling means (16) is positioned to selectively couple a predetermined percentage of the master oscillator (12) radiation into the gain element (14) medium while preventing all but a predetermined percentage of any amplified radiation exiting the gain element (14) from re-entering the master oscillator (12). Phase conjugation means (20) is disposed along the optical path on the opposite side of the gain element (14) as the coupling means (16), for reflecting the phase conjugate of laser radiation incident thereon. Delay means (26) positioned between the gain element (14) and the phase conjugation means (16) assures that radiation pulses coupled along the optical path traverse and substantially exit from the gain element (14), toward the phase conjugation means (20), before any reflected radiation from the phase conjugation means (20) enters the gain element (14). In a further aspect of the invention the laser apparatus (100) further comprises imaging means (132) disposed along the optical path between said phase conjugation means (120) and said gain element (114) so as to provide maximum transfer of phase information from the lasing medium of said gain element (114) to said phase conjugate reflector (120) and back.
摘要翻译：一种利用主振荡器功率放大器配置的激光装置（10），其中主振荡器（12）提供注入到至少一个激光介质增益元件（14）中的低能量，高相位前质量和高光谱纯度辐射源，沿光路设置。耦合装置（16）被定位成选择性地将预定百分比的主振荡器（12）辐射耦合到增益元件（14）介质中，同时防止离开增益元件（14）的任何放大的放射线的预定百分比除以重新进入主振荡器（12）。相位共轭装置（20）沿着作为耦合装置（16）的增益元件（14）的相反侧的光路布置，用于反射入射在其上的激光辐射的相位共轭。位于增益元件（14）和相位共轭装置（16）之间的延迟装置（26）确保沿着光路耦合的辐射脉冲朝向相位共轭装置（20）大体上从增益元件（14）退出，在来自相位共轭装置（20）的反射辐射进入增益元件（14）之前。在本发明的另一方面，激光装置（100）还包括沿着所述相位共轭装置（120）和所述增益元件（114）之间的光路布置的成像装置（132），以便提供相位信息从所述增益元件（114）的激光介质到达所述相位共轭反射器（120）并返回。

27. 发明授权

US07460755B2 Method and apparatus for combining laser light 失效
标题翻译：用于组合激光的方法和装置
公开(公告)号：US07460755B2
公开(公告)日：2008-12-02
申请号：US10759511
申请日：2004-01-15
申请人： Hans W. Bruesselbach , Monica Minden , Cris Jones , Dave Hammon
发明人： Hans W. Bruesselbach , Monica Minden , Cris Jones , Dave Hammon
IPC分类号： G02B6/06 , G02B6/04 , G02B6/26 , G02B6/42
CPC分类号： G02B6/2808 , G02B6/04 , G02B19/0028 , G02B19/0057 , G02B27/09
摘要： A fiber optic apparatus formed by fusing together multiple optical fibers and stretching the fused optical fibers to form a tapered portion. The tapered portion is cleaved or cut and polished to form a facet at which an optical beam is received or transmitted.
摘要翻译：通过将多根光纤融合在一起并拉伸融合的光纤以形成锥形部分而形成的光纤设备。锥形部分被切割或切割和抛光以形成光束被接收或传输的小平面。

28. 发明授权

US5636239A Solid state optically pumped laser head 失效
标题翻译：固态光泵浦激光头
公开(公告)号：US5636239A
公开(公告)日：1997-06-03
申请号：US441352
申请日：1995-05-15
申请人： Hans W. Bruesselbach , Robert W. Byren , Eric C. Fest , Steven C. Matthews , Stephen R. Klinger
发明人： Hans W. Bruesselbach , Robert W. Byren , Eric C. Fest , Steven C. Matthews , Stephen R. Klinger
IPC分类号： H01S3/04 , H01S3/042 , H01S3/06 , H01S3/091 , H01S3/093 , H01S3/0941 , H01S3/16 , H01S3/092
CPC分类号： H01S3/0941 , H01S3/042 , H01S3/0602 , H01S3/025 , H01S3/0407 , H01S3/061 , H01S3/0612 , H01S3/0617 , H01S3/0625 , H01S3/094084
摘要： A laser pump cavity assembly having a laser rod with a ground outer surface positioned concentrically within an annular jet sleeve which is, in turn, positioned concentrically within an annular outer sleeve. The outer sleeve is coated with a dielectric coating having slits therein arranged to receive focused optical pump radiation from respective laser diode arrays, the pump radiation being transmitted through the outer sleeve and jet sleeve to excite the laser rod. The jet sleeve is positioned to define cooling fluid chambers between the outer sleeve and the jet sleeve, and between the jet sleeve and the laser rod, and is provided with a series of jet holes for directing cooling fluid to impinge perpendicularly on the laser rod. The end faces of the jet sleeve and outer sleeve are further coated with dielectric material to enhance the efficiency of the device. The cooperating end caps which mount the outer sleeve, jet sleeve, and laser rod employ a number of advantageous self-aligning and sealing features.
摘要翻译：一种激光泵腔体组件，其具有激光棒，该激光棒具有同心地定位在环形喷射套筒内的接地外表面，该环形射流套筒又一个同心地定位在环形外套筒内。外套筒涂覆有其中布置有狭缝的电介质涂层，以从相应的激光二极管阵列接收聚焦光泵浦辐射，泵浦辐射通过外套管和射流套筒传递以激励激光棒。喷射套筒定位成在外套筒和射流套筒之间以及射流套筒和激光棒之间限定冷却流体室，并且设置有一系列喷射孔，用于引导冷却流体垂直地照射在激光棒上。喷射套管和外套筒的端面进一步涂覆介电材料，以提高装置的效率。安装外套筒，喷射套筒和激光棒的协作端盖采用许多有利的自对准和密封特征。

29. 发明授权

US4968121A Hermetically sealed apparatus and method for maintaining crystals at a controlled operating temperature 失效
标题翻译：密封装置和在受控工作温度下保持晶体的方法
公开(公告)号：US4968121A
公开(公告)日：1990-11-06
申请号：US281134
申请日：1988-12-07
申请人： Hans W. Bruesselbach , Robert H. Sipman
发明人： Hans W. Bruesselbach , Robert H. Sipman
IPC分类号： G02F1/35 , G02F1/37 , G05D23/20
CPC分类号： G02F1/3501 , G05D23/1919 , G05D23/20 , G02F1/37 , G02F2001/3505
摘要： An apparatus for maintaining a crystal at a precisely controlled operating temperature over extended periods of time without significant thermal degradation of the crystal. The apparatus has thermally conducting walls. The walls define an inner hermetically sealed chamber for the crystal. Input and output windows are hermetically sealed to the input and output ends of the chamber. The inner surfaces of these windows are maintained at the operating temperature of the crystal to prevent fogging of the windows. Flexible thermal conducting layers are used between the crystal surfaces and the walls of the chamber to achieve uniform and continuous thermal contact therebetween, without mechanical stress to the crystal. The structure provides fast thermal response, controlled temperature in the crystal interaction region and stability of operation over extended periods of time. In one preferred embodiment, the crystal is held in suspended position within the chamber between a pair of spring-loaded plungers. Other embodiments and options are also disclosed.
摘要翻译：一种用于在晶体长时间内将晶体保持在精确控制的工作温度下而不会明显的热降解的装置。该装置具有导热壁。这些墙壁为水晶界定了一个内部密封的室。输入和输出窗口密封到腔室的输入和输出端。这些窗口的内表面保持在晶体的工作温度，以防止窗户起雾。在晶体表面和室壁之间使用柔性导热层，以在其间实现均匀且连续的热接触，而不会对晶体造成机械应力。该结构提供快速的热响应，晶体相互作用区域中的受控温度和长时间的操作稳定性。在一个优选实施例中，晶体在一对弹簧加载柱塞之间的室内被保持在悬挂位置。还公开了其它实施例和选项。

30. 发明授权

US4821272A Single mirror integral raman laser 失效
标题翻译：单镜组合拉曼激光
公开(公告)号：US4821272A
公开(公告)日：1989-04-11
申请号：US924108
申请日：1986-10-31
申请人： Hans W. Bruesselbach , Donald R. Dewhirst
发明人： Hans W. Bruesselbach , Donald R. Dewhirst
IPC分类号： H01S3/30
CPC分类号： H01S3/305
摘要： A Raman laser (10) is provided using a pump laser (22) as a source of radiation at a first wavelength and a Raman cell (30) for converting the first wavelength radiation to a second wavelength. The pump laser (20) provides polarized radiation at a predetermined first wavelength which is focused by a focusing means (40) into a Raman medium (32) which converts radiation at the first wavelength to a predetermined second wavelength by Raman scattering processes. A reflection means (50) which is aligned normal to the first wavelength radiation is disposed between the pump laser (20) and focusing means (40). The reflection means is substantially 100% reflective of radiation at the second wavelength and substantially non-reflective of radiation at the first wavelength. A polarizing means (70) and quarter-wave plate (60) are disposed along the optical path between the Raman medium (32) and the pump laser (20) for allowing propagation of the first wavelength to the Raman medium (32) but preventing SBS radiation from entering the pump laser (20) from the Raman medium.Alternatively, the pump laser includes an output reflection means (124) that is substantially 100% reflective of radiation at the second wavelength and partially reflective of radiation at the first wavelength. This embodiment achieves automatic alignment of the pump laser and the Raman medium (32) and does not use additional reflection means, polarization means, or a quarter-wave plate.
摘要翻译：使用泵浦激光器（22）作为第一波长的辐射源和用于将第一波长辐射转换为第二波长的拉曼单元（30）提供拉曼激光器（10）。泵浦激光器（20）以预定的第一波长提供偏振辐射，该预定的第一波长由聚焦装置（40）聚焦成通过拉曼散射方法将第一波长的辐射转换成预定的第二波长的拉曼介质（32）。与泵浦激光器（20）和聚焦装置（40）之间设置与第一波长辐射垂直对准的反射装置（50）。反射装置基本上100％反射第二波长处的辐射，并且基本上不反射第一波长处的辐射。沿着拉曼介质（32）和泵浦激光器（20）之间的光路设置偏振装置（70）和四分之一波片（60），用于允许第一波长传播到拉曼介质（32），但防止 SBS辐射从拉曼介质进入泵激光器（20）。或者，泵浦激光器包括输出反射装置（124），其基本上100％反射第二波长处的辐射并部分地反射第一波长的辐射。该实施例实现了泵浦激光器和拉曼介质（32）的自动对准，并且不使用附加的反射装置，偏振装置或四分之一波片。

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