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1. 发明申请

WO2014035505A2 LASER POWER SENSOR 审中-公开
标题翻译：激光功率传感器
公开(公告)号：WO2014035505A2
公开(公告)日：2014-03-06
申请号：PCT/US2013/043007
申请日：2013-05-29
申请人： IPG PHOTONICS CORPORATION , FOMIN, Valentin , ABRAMOV, Andrey , MASHKIN, Andrei
发明人： FOMIN, Valentin , ABRAMOV, Andrey , MASHKIN, Andrei
CPC分类号： G01J1/4257 , G01J1/0411 , G01J1/0422 , G01J1/0425
摘要： A sensor unit for detecting Rayleigh scattering of laser light, guided in a fiber along a light path, is configured with a holder. The holder has a U- shaped recess centered along an axis which extends transversely to the light path. The curved bottom of the recess has a matte reflective surface and is configured with such a radius of curvature that Rayleigh scattered light indicated on the bottom is collected in a focal plane of a light input window of a meter coaxial with the recess. The reflected amount of the Rayleigh scattering on the light input window is sufficient to provide a measurement data which deviates from a reference value at no more than about ±3%.
摘要翻译：用于检测沿着光路在光纤中引导的激光的瑞利散射的传感器单元配置有保持器。支架具有沿着横向于光路延伸的轴线居中的U形凹部。凹部的弯曲底部具有无光泽反射表面并且被构造成具有这样的曲率半径，使得在底部上指示的瑞利散射光被收集在与凹部同轴的仪表的光输入窗口的焦平面中。在光输入窗口上的瑞利散射的反射量足以提供不超过约±3％的偏离参考值的测量数据。

2. 发明申请

WO2013096367A1 PIGTAILED FIBER CONNECTOR SYSTEM 审中-公开
标题翻译：光纤连接器系统
公开(公告)号：WO2013096367A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/070461
申请日：2012-12-19
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , FOMIN, Valentin , YAGODKIN, Dimitri , MAKAGON, Alexander
发明人： GAPONTSEV, Valentin , FOMIN, Valentin , YAGODKIN, Dimitri , MAKAGON, Alexander
IPC分类号： G02B6/38
CPC分类号： G02B6/4296 , G02B3/04 , G02B6/25 , G02B6/2552 , G02B6/262 , G02B6/32 , G02B6/34 , G02B6/3853 , G02B2006/12166 , G02B2006/12192
摘要： A fiber connector system provides a pigtailed monolithic terminal block of a fiber connector configured to alter a space distribution of laser output radiation. The output facet of the pigtailed monolithic terminal block is configured to alter the divergence of an output beam allowing collimation, focusing, or any desired distribution without additional optical circuitry, The fiber connector system is operative to couple two fiber's from respective different fiber devices and allows positioning additional optical components there between.
摘要翻译：光纤连接器系统提供配置成改变激光输出辐射的空间分布的光纤连接器的尾纤单片端子块。尾纤单片端子块的输出端被配置为改变输出光束的发散度，允许准直，聚焦或任何期望的分布，而不需要额外的光学电路。光纤连接器系统可操作以从相应的不同光纤装置耦合两根光纤，并允许在其间定位其他光学元件。

3. 发明申请

WO2011159539A2 FIBER LASER SYSTEM CONFIGURED TO CONTROLLABY ALIGN BEAM 审中-公开
标题翻译：光纤激光系统配置为控制对准光束
公开(公告)号：WO2011159539A2
公开(公告)日：2011-12-22
申请号：PCT/US2011/039706
申请日：2011-06-09
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , FOMIN, Valentin
发明人： GAPONTSEV, Valentin , FOMIN, Valentin
IPC分类号： H01S3/067
CPC分类号： H01S3/005 , B23K26/043 , B23K26/066 , B23K26/705 , G02B6/4225 , G02B6/4296 , H01S3/067
摘要： The present disclosure relates to a modular fiber laser system operative to controllably guide a beam which is launched from a feeding fiber into a process fiber so that the high-aperture component is coupled and guided in cladding of the process fiber, and a low-aperture component is coupled into the core of the fiber. The laser system further has a reflective element configured with light-reflecting and light-transmitting portions. The high-aperture component at least partially decouples from the cladding into the core so that the core radiates the high- aperture and low-aperture components. The high-aperture component is incident upon the light-reflecting portion and backreflected into the process fiber so that a sensor array, which is located between the feeding and process fibers, detects the reflected light. The laser system further includes an adjustment system operatively connected to the sensor array and configured to displace the fibers relative to one another to an alignment position after the sensor array detects a maximum signal of the reflected high-aperture component.
摘要翻译：本公开涉及一种模块化光纤激光器系统，其可操作地将从馈电光纤发射的光束可控地引导到工艺光纤中，使得高孔径分量在工艺光纤的包层中耦合和引导，并且低孔径组件耦合到光纤的核心。激光系统还具有配置有光反射和透光部分的反射元件。高孔径部件至少部分地从包层去耦合到芯中，使得芯辐射高孔径和低孔径分量。高孔径分量入射到光反射部分并反射到工艺光纤中，使得位于进给光纤和处理光纤之间的传感器阵列检测反射光。激光系统还包括可操作地连接到传感器阵列并且被配置为在传感器阵列检测到反射的高孔径分量的最大信号之后将纤维相对于彼此移位到对准位置的调节系统。

4. 发明申请

WO2013096364A1 HIGH POWER FIBER LASER SYSTEM WITH DISTRIBUTIVE MODE ABSORBER 审中-公开
标题翻译：具有分布式模式吸收器的高功率光纤激光系统
公开(公告)号：WO2013096364A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/070458
申请日：2012-12-19
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , FOMIN, Valentin , ABRAMOV, Mikhail , FERIN, Anton
发明人： GAPONTSEV, Valentin , FOMIN, Valentin , ABRAMOV, Mikhail , FERIN, Anton
IPC分类号： H01S3/098 , G02B6/02
CPC分类号： G02B6/03694 , G02B6/14 , H01S3/042 , H01S3/06745 , H01S3/06754 , H01S3/08045
摘要： A clad absorber unit is provided on a passive fiber of a high power fiber laser system and operative to trap and remove modes propagating along the waveguide clad of the fiber. The mode absorber is configured with such an optimal length that the clad light may be removed in a localized manner, substantially uniformly removed over the entire length thereof. The absorber removing clad light in a unformed fashion includes a host material impregnated with diffusers.
摘要翻译：在高功率光纤激光器系统的无源光纤上设置包层吸收单元，用于捕获和去除沿着光纤的波导包层传播的模式。模式吸收器被配置有这样一个最佳长度，使得可以以局部方式去除包层光，在其整个长度上基本均匀地移除。吸收剂去除包覆光以未成型的方式包括浸渍有扩散器的主体材料。

5. 发明申请

WO2013096363A1 HIGH POWER METAL CLAD MODE ABSORBER 审中-公开
标题翻译：高功率金属压模模式吸收器
公开(公告)号：WO2013096363A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/070454
申请日：2012-12-19
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , FOMIN, Valentin , ABRAMOV, Mikhail , FERIN, Anton
发明人： GAPONTSEV, Valentin , FOMIN, Valentin , ABRAMOV, Mikhail , FERIN, Anton
IPC分类号： H01S3/098 , G02B6/02
CPC分类号： G02B6/03694 , G02B6/14 , H01S3/0405 , H01S3/042 , H01S3/067 , H01S3/06708 , H01S3/06733 , H01S3/08045 , H01S3/094007
摘要： A clad absorber unit is provided on a passive fiber of a high power fiber laser system and operative to trap and remove high order modes propagating along the clad of the passive fiber, The mode absorber has a composition made from one or more liquid metals and alloys thereof which are placed in the opening formed in the sheath of the passive fiber. The composition is configured to remove from the cladding the MM light having a predetermined light power which heats the composition at a temperature lower than a threshold temperature at which the absorber may be damaged.
摘要翻译：在大功率光纤激光器系统的无源光纤上设置一个包层吸收器单元，用于捕获和去除沿着被动光纤的包层传播的高阶模。模式吸收器具有由一种或多种液态金属和合金其被放置在形成在无源光纤的护套中的开口中。该组合物构造成从包层移除具有预定光功率的MM光，其在低于吸收器可能损坏的阈值温度的温度下加热组合物。

6. 发明申请

WO2011031704A2 MULTIMODE FIBER 审中-公开
标题翻译：多模光纤
公开(公告)号：WO2011031704A2
公开(公告)日：2011-03-17
申请号：PCT/US2010/048054
申请日：2010-09-08
申请人： IPG PHOTONICS CORPORATION , GAPONTSEV, Valentin , VYATKIN, Michael , FOMIN, Valentin , PLATANOV, Nikolai
发明人： GAPONTSEV, Valentin , VYATKIN, Michael , FOMIN, Valentin , PLATANOV, Nikolai
IPC分类号： G02B6/028 , G02B6/14
CPC分类号： H01S3/06729 , G02B6/03611 , G02B6/14 , H01S3/0672 , H01S3/06737 , H01S3/06745 , H01S3/094007
摘要： A monolithic fiber is configured with a double bottleneck-shaped multimode (MM) core capable of supporting substantially only a fundamental mode at a given wavelength and having opposite end regions, frustoconically shaped transformer regions, which run inwards from the respective end regions, and a central uniformly dimensioned region, which bridges the transformer regions. The MM core has a refractive step-index profile which is configured with a centrally positioned dip having a variable width along the length of the fiber. The width of the dip is relatively small at the end regions of the MM core so as to support only the fundamental mode with a Gaussian profile. As the dip becomes larger along the input transformer region, it gradually shapes the Gaussian profile into the ring profile of the fundamental mode, which is guided along the central region of the MM core. The dip gradually becomes smaller along the output transition region so as to shape the ring profile back into the substantially Gaussian profile of the fundamental mode radiated from the output end region of the MM core. The refractive index profile has a ring area doped with one or more rare-earth elements and configured to amplify substantially only the fundamental mode.
摘要翻译：单芯光纤配置有双瓶颈型多模（MM）芯，其能够基本上仅支持在给定波长处的基模，并且具有从相应端部区域向内延伸的相对端区域，截头圆锥形变压器区域，以及中心均匀尺寸的区域，桥接变压器区域。 MM芯具有折射阶梯折射率分布，该轮廓配置有沿着光纤的长度具有可变宽度的中心定位的倾角。在MM核的端部区域，浸渍的宽度相对较小，以便仅支持具有高斯分布的基模。随着沿着输入变压器区域的倾角变大，它逐渐将高斯分布形状形成为沿着MM芯的中心区域引导的基模的环形轮廓。沿着输出过渡区域的倾斜逐渐变小，以便将环形轮廓形状形成为从MM芯的输出端区域辐射的基本模式的基本高斯分布。折射率分布具有掺杂有一个或多个稀土元素的环形区域并且被配置为仅基本上放大基本模式。

7. 发明申请

WO2016200621A2 MULTIBEAM LASER SYSTEM AND METHODS FOR WELDING 审中-公开
标题翻译：多管激光系统及焊接方法
公开(公告)号：WO2016200621A2
公开(公告)日：2016-12-15
申请号：PCT/US2016/034354
申请日：2016-05-26
申请人： IPG PHOTONICS CORPORATION
发明人： SCHERBAKOV, Eugene , FOMIN, Valentin , ABRAMOV, Andrey , YAGODKIN, Dimitri , MAMEROW, Holger
IPC分类号： B23K26/21 , B23K26/067 , B23K26/70
CPC分类号： B23K26/067 , B23K26/0604 , B23K26/21 , B23K26/22 , B23K26/24 , B23K26/32 , B23K26/322 , B23K2201/006 , B23K2201/18 , B23K2201/34 , B23K2203/04 , B23K2203/10 , G02B6/26
摘要： The present invention provides a multi-fiber laser output system that delivers at least three fiber outputs arranged in a circumferential pattern or otherwise at least four distinct laser outputs from a single processing cable. The present invention allows for controlling the at least three laser modules and delivering their respective outputs in a pre-determined sequence in a single processing cable, thereby providing multiple processing steps on a work piece that heretofore required separate optics for each beam. The at least three laser outputs are optimized for use in creating spot welds, seam welds or virtual wobble welds when used for seam welding.
摘要翻译：本发明提供了一种多光纤激光输出系统，其传送以圆周图案布置的至少三个光纤输出或者从单个处理电缆输送至少四个不同的激光输出。本发明允许控制至少三个激光模块并且以预定的顺序在单个处理电缆中传送它们各自的输出，由此在工件上提供多个处理步骤，其迄今为每个光束需要单独的光学器件。当用于缝焊时，至少有三个激光输出被优化用于产生点焊，缝焊或虚拟摆动焊缝。

8. 发明申请

WO2015084854A1 HIGH POWER HIGH EFFICIENCY FIBER LASER AND METHOD FOR OPTIMIZING WALL PLUG EFFICIENCY THEREOF 审中-公开
标题翻译：高功率高效光纤激光器及其优化墙壁插拔效率的方法
公开(公告)号：WO2015084854A1
公开(公告)日：2015-06-11
申请号：PCT/US2014/068172
申请日：2014-12-02
申请人： IPG PHOTONICS CORPORATION
发明人： GAPONTSEV, Valentin , FOMIN, Valentin , SCHERBAKOV, Eugene , OVTCHINNIKOV, Alex , FERIN, Anton , ABRAMOV, Andrey
IPC分类号： H01S3/067
CPC分类号： H01S3/0675 , H01S3/094069 , H01S3/0941 , H01S3/1618
摘要： The inventive laser is configured with a plurality of pigtailed multimode (MM) diode lasers each receiving a direct input current at a room temperature which is maintained to be within a 20-25° C inside the housing of the laser. The diode lasers each are configured to operate at a desired wavelength in an optimal operational range, in which the diode laser operates with a WPE range between 63% and 75%. The direct current inputted in each diode laser is selected to be below a threshold at an efficiency curve of the diode laser after which the efficiency of the diode laser starts decreasing while an output power of the diode laser continues to increase. The laser is further configured with a fiber gain block having an active fiber medium which is pumped with the cumulative pump output and operative to emit a laser output in a power range between hundreds of watts and tens and even hundreds of kilowatts at the desired wavelength in an optimal operation range. The optimal operational ranges of respective MM diode lasers and fiber gain block are matched to achieve a superposition of respective efficiency maximums providing an overall maximum system efficiency up to 55%.
摘要翻译：本发明的激光器配置有多个尾纤多模（MM）二极管激光器，其每个都接收室温下的直接输入电流，该激光器保持在激光器壳体内的20-25℃内。二极管激光器被配置为在最佳工作范围内以期望的波长工作，其中二极管激光器以63％至75％之间的WPE范围工作。在二极管激光器的效率曲线下，输入到每个二极管激光器中的直流电流选择为低于阈值，之后二极管激光器的效率开始下降，同时二极管激光器的输出功率继续增加。激光器进一步配置有具有有源光纤介质的光纤增益块，该有源光纤介质利用累积泵浦输出被泵浦，并且可操作以在所需波长的数百瓦特和几十千瓦之间的功率范围内发射激光输出最佳操作范围。匹配相应MM二极管激光器和光纤增益块的最佳工作范围，以实现各自效率最大值的叠加，从而提供高达55％的总体最大系统效率。

9. 发明申请

WO2014138399A1 ULTRA HIGH POWER SINGLE MODE FIBER LASER SYSTEM WITH NON-UNIFORMLY CONFIGURED FIBER-TO FIBER ROD MULTIMODE AMPLIFIER 审中-公开
标题翻译：超高功率单模光纤激光系统，具有非均匀配置的光纤到多个光纤放大器
公开(公告)号：WO2014138399A1
公开(公告)日：2014-09-12
申请号：PCT/US2014/021206
申请日：2014-03-06
申请人： IPG PHOTONICS CORPORATION
发明人： FOMIN, Valentin , ABRAMOV, Mikhail , FERIN, Anton , SAMARTSEV, Igor , GAPONTSEV, Valentin
IPC分类号： H01S3/067 , H01S3/098 , H01S3/10
CPC分类号： H01S3/06708 , H01S3/005 , H01S3/0407 , H01S3/067 , H01S3/06745 , H01S3/06754 , H01S3/094007 , H01S3/094019 , H01S3/094053 , H01S3/094069 , H01S3/09408 , H01S3/09415 , H01S3/10
摘要： A high power fiber laser system includes a booster which is configured as a fiber amplifier extending over free space, pump source and laser head including a reflective element which receives pump light and. reflects toward the output end of the booster in a counter signal- propagating direction. The booster is configured with concentric and coextending frustoconically shaped multimode ("MM") core and cladding around the core. The core includes a mode transition region expanding between small diameter SM input and large diameter MM output core ends and configured so that amplification of high order modes is substantially suppressed as a single mode ("SM") signal light propagates from the input to output core ends. The laser head receives output, ends of respective pump light delivery fibers and signal fiber, respectively. The pump source is structured with a plurality of independent sub-pumps arranged around the booster. The laser head supports a segmented mirror configured to reflect pump lights from respective pump sub-sources to the output end of the booster in a counter propagating direction, wherein the booster is configured to emit the amplified signal light reaching up to MW power levels substantially in the SM.
摘要翻译：高功率光纤激光器系统包括被配置为在自由空间上延伸的光纤放大器的升压器，泵浦源和包括接收泵浦光的反射元件的激光头。在反向信号传播方向上向增强器的输出端反射。增强器配置有同心和共同延伸的截头圆锥形多模（“MM”）芯和围绕芯的包层。核心包括在小直径SM输入和大直径MM输出核心端之间扩展的模式转变区域，并且被配置为当单模（“SM”）信号光从输入到输出核心传播时基本上抑制高阶模式的放大结束。激光头分别接收输出，相应的泵浦光输送光纤和信号光纤的端部。泵源结构具有围绕增压器布置的多个独立子泵。激光头支撑分段反射镜，其配置成将来自相应泵子源的泵浦光以反向传播方向反射到升压器的输出端，其中，升压器被配置为发射达到MW功率水平的放大信号光， SM。

10. 发明申请

WO2014134173A1 ULTRA-HIGH POWER FIBER LASER SYSTEM WITH MULTIMODE-MULTIMODE FIBER COMBINER 审中-公开
标题翻译：具有多模多模光纤组合的超高功率光纤激光系统
公开(公告)号：WO2014134173A1
公开(公告)日：2014-09-04
申请号：PCT/US2014/018688
申请日：2014-02-26
申请人： IPG PHOTONICS CORPORATION
发明人： FOMIN, Valentin , MOCHALOV, Dmitry , ABRAMOV, Andrey
IPC分类号： G02B6/26 , G02B6/40
CPC分类号： G02B6/2856 , G02B6/4296
摘要： An ultra-high power fiber laser system includes a multimode combiner which is configured with a plurality of low mode fibers bundled together and tapering toward its downstream end. The system further includes a clad mode absorber extending along the tapered downstream end of the combiner and extending over a portion of the combiner's output fiber. The absorber is configured with sequentially located zones which are provided with respective refractive indices. In a forward propagating direction of light signal, the upstream zone includes polymeric material with the refractive index higher than that of the cladding of the combiner end fiber. This zone is configured to remove the back reflected core guided light bled into the cladding of the combiner through a splice between combiner end and output fibers. The intermediate zone includes polymeric material configured with a refractive index lower than that of the cladding of the combiner output fiber so it can prevent clad guided signal light from decoupling the cladding under the material. The downstream zone is configured with, polymeric material having a refractive index lower than that of the cladding of the combiner output fiber. The polymeric material of the downstream zone is impregnated with a plurality of light diffusers scattering high numerical aperture rays of the clad-guided signal light.
摘要翻译：超高功率光纤激光器系统包括多模组合器，其配置有多个低模式光纤，其捆绑在一起并朝着其下游端逐渐变细。该系统还包括沿着组合器的锥形下游端延伸并在组合器的输出光纤的一部分上延伸的包层模式吸收体。吸收器配置有具有相应折射率的顺序定位的区域。在光信号的向前传播方向上，上游区域包括折射率高于组合器端纤维包层的折射率的聚合材料。该区域被配置为通过组合器端部和输出光纤之间的接合将经反射的芯引导光移除到组合器的包层中。中间区域包括被配置为折射率低于组合器输出光纤的包层的折射率的聚合物材料，因此可以防止包层引导信号光使材料之下的包层解耦。下游区域配置有折射率低于组合器输出光纤的包层的折射率的聚合材料。下游区域的聚合物材料浸渍有散射包层引导信号光的高数值孔径光的多个光漫射器。

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