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1. 发明申请

US20140305910A1 System and Method Utilizing Fiber Lasers for Titanium Welding Using an Argon Cover Gas 审中-公开
标题翻译：使用氩气覆盖气体进行钛焊接的光纤激光器的系统和方法
公开(公告)号：US20140305910A1
公开(公告)日：2014-10-16
申请号：US13851230
申请日：2013-03-27
申请人： Valentin P. Gapontsev , Chartie Bridge , Michael Lyons , Oleg Shkurikhin , Roberto Alzaga , Darrell Colman , Sebastian Favre
发明人： Valentin P. Gapontsev , Chartie Bridge , Michael Lyons , Oleg Shkurikhin , Roberto Alzaga , Darrell Colman , Sebastian Favre
IPC分类号： B23K26/32 , B23K26/12 , B23K26/20
CPC分类号： B23K26/123 , B23K26/0608 , B23K26/0622 , B23K26/14 , B23K26/20 , B23K26/22 , B23K26/244 , B23K26/32 , B23K2101/20 , B23K2103/14
摘要： The present invention is a method and system for reducing contamination in the resulting plasma of a weld produced by a fiber laser. The invention establishes the fiber laser in an optimal configuration for applying a high density beam to a weld material that eliminates spectral interference. The beam is applied in a narrow bandwidth of 1064 nm+/−0.5 nm in one operative condition using an inert shielding gas, preferably argon, in a cross-flow or controlled environment around the welding region to prevent contamination of the plasma forming in the weld region. The method is optimized by determining and avoiding the emission spectrum for the fiber laser and the cover gas or gasses as well as any particular excitation spectra for the weld material. The system can utilize a single laser input, or can utilize multiple lasers joined by coupling means and utilizing a switch to select one or more of the fiber lasers.
摘要翻译：本发明是一种减少由光纤激光器产生的焊缝产生的等离子体污染的方法和系统。本发明将光纤激光器建立在将高密度光束施加到消除光谱干扰的焊接材料的最佳构造中。在一个操作条件下，使用惰性保护气体，优选氩气，在焊接区域周围的交叉流动或受控环境中，将光束施加在1064nm +/- 0.5nm的窄带宽内，以防止焊接中等离子体形成的污染地区。该方法通过确定和避免光纤激光器和覆盖气体或气体的发射光谱以及焊接材料的任何特定激发光谱来优化。该系统可以利用单个激光输入，或者可以利用通过耦合装置连接的多个激光器，并利用开关来选择一个或多个光纤激光器。

2. 发明授权

US08724945B2 High power fiber laser system with integrated termination block 有权
标题翻译：具有集成端接块的大功率光纤激光系统
公开(公告)号：US08724945B2
公开(公告)日：2014-05-13
申请号：US12833126
申请日：2010-07-09
申请人： Valentin P. Gapontsev , Alexander Makagon , Dimitri Yagodkin
发明人： Valentin P. Gapontsev , Alexander Makagon , Dimitri Yagodkin
IPC分类号： G02B6/26 , G02B6/42
CPC分类号： H01S3/06704 , G02B6/30 , G02B6/4296 , H01S3/042
摘要： The present disclosure is a system for the protection of a fiber within a laser system. The system has a water-cooled housing supporting a termination block, which is operative to shield a protective layer of a delivery fiber from back-reflected beams of light. The termination block is manufactured from quartz and is frustconical in configuration and fuseable to the delivery fiber. The delivery fiber has a polymeric protective layer with an acceptance end and a delivery end, and passes through a washer contained within the housing; the washer has a dielectric reflective coating. The system has at least one terminal block connector which further comprises a cone termination block, a reflector, and a set of light guards. The cone termination block is spliced to an output end of the delivery fiber and produces an angle λ so as to reduce propagation of back-reflected light. The reflector is positioned so as to block additional back-reflected light from the protective layer of the delivery fiber.
摘要翻译：本公开是用于保护激光系统内的光纤的系统。该系统具有支撑端接块的水冷式壳体，该终端块可操作以将输送纤维的保护层与后反射光束屏蔽。端接块由石英制成，在结构上截头锥形，并与输送纤维相融合。输送纤维具有聚合物保护层，其具有接受端和输送端，并穿过包含在壳体内的垫圈; 垫圈具有介电反射涂层。该系统具有至少一个端子块连接器，其还包括锥形端接块，反射器和一组光保护器。锥形端接块被拼接到输送光纤的输出端，并产生角度λ，以便减少背反射光的传播。反射器被定位成阻挡来自输送纤维的保护层的附加的反射光。

3. 发明授权

US08068705B2 Single-mode high-power fiber laser system 有权
标题翻译：单模大功率光纤激光系统
公开(公告)号：US08068705B2
公开(公告)日：2011-11-29
申请号：US12559284
申请日：2009-09-14
申请人： Valentin P. Gapontsev , Valentin Fomin , Nikolai Platonov , Mikhall Vyatkin
发明人： Valentin P. Gapontsev , Valentin Fomin , Nikolai Platonov , Mikhall Vyatkin
IPC分类号： G02B6/26
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，其能够在给定波长处基本上仅支持基模，并且具有相对的端部区域，从相应端部区域向内延伸的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，其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芯的端部区域，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变形成沿着MM芯的中心区域引导的基模的环形轮廓。沿着输出过渡区逐渐变小，从而将环形轮廓形状形成为从MM核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。

4. 发明申请

US20110051755A1 Frequency Conversion Laser Head 审中-公开
标题翻译：变频激光头
公开(公告)号：US20110051755A1
公开(公告)日：2011-03-03
申请号：US12943387
申请日：2010-11-10
申请人： Denis Gapontsev , Valentin P. Gapontsev , Alexey Avdokhin
发明人： Denis Gapontsev , Valentin P. Gapontsev , Alexey Avdokhin
IPC分类号： H01S3/10 , H01S3/30
CPC分类号： H01S3/025 , G02F1/353 , G02F1/37 , H01S5/0092 , H01S5/02
摘要： A laser assembly is configured with a frequency conversion laser head operative to shift a fundamental frequency of input light to the desired frequency of an output light. The frequency conversion laser head includes a dump means operative to guide an unconverted output light at the fundamental frequency outside the case of the frequency conversion laser head. The dump means is configured with a guide optics operative to couple the output light at the fundamental frequency to a fiber terminating outside the case of the frequency conversion laser head.
摘要翻译：激光组件配置有频率转换激光头，其可操作以将输入光的基频移动到输出光的期望频率。变频激光头包括转储装置，可操作以引导频率转换激光头外部的基频处的未转换的输出光。倾卸装置配置有导向光学器件，其可操作以将基频输出光耦合到终止于变频激光头外壳外部的光纤。

5. 发明申请

US20100247912A1 Method for Manufacturing LMA Optical Preforms and Fibers 审中-公开
标题翻译：制造LMA光学预制件和纤维的方法
公开(公告)号：US20100247912A1
公开(公告)日：2010-09-30
申请号：US12409565
申请日：2009-03-24
申请人： Valentin P. Gapontsev , Volodia Sergueev , Nikolai Platonov
发明人： Valentin P. Gapontsev , Volodia Sergueev , Nikolai Platonov
IPC分类号： D02G3/18 , C03B37/025 , C03C13/04
CPC分类号： C03B37/01245 , C03B37/02754 , C03B2203/23 , C03B2205/14 , C03B2205/16 , Y10T428/298
摘要： A method of producing a large mode area optical preform includes selecting a preexisting rod and at least one preexisting outer tube. The rod and tube are selected so that a difference between respective indices of refraction is uniform and lies within the desired range, and a ratio between respective rod and tube diameters is within the desired range after the rod is inserted into the tube and both are thermally treated. The predetermined ranges are selected to provide mass production of a large mode area fiber with the desired physical and geometrical characteristics.
摘要翻译：一种生产大面积光学预型件的方法包括选择预先存在的杆和至少一个预先存在的外管。选择杆和管，使得折射率之间的差异是均匀的并且处于期望的范围内，并且杆和管之间的比例在杆插入管中之后在期望的范围内，并且都是热的治疗。选择预定范围以提供具有期望的物理和几何特征的大模式区域光纤的批量生产。

6. 发明申请

US20120008648A1 High Power Processing Fiber Cable with Integrated Beam Expander and Method of Use 有权
标题翻译：具有集成光束扩展器的高功率处理光缆和使用方法
公开(公告)号：US20120008648A1
公开(公告)日：2012-01-12
申请号：US12833126
申请日：2010-07-09
申请人： Valentin P. Gapontsev , Alexander Makagon , Dimitri Yagodkin
发明人： Valentin P. Gapontsev , Alexander Makagon , Dimitri Yagodkin
IPC分类号： H01S3/30
CPC分类号： H01S3/06704 , G02B6/30 , G02B6/4296 , H01S3/042
摘要： The present disclosure is a system for the protection of a fiber within a laser system. The system has a water-cooled housing supporting a termination block, which is operative to shield a protective layer of a delivery fiber from back-reflected beams of light. The termination block is manufactured from quartz and is frustconical in configuration and fuseable to the delivery fiber. The delivery fiber has a polymeric protective layer with an acceptance end and a delivery end, and passes through a washer contained within the housing; the washer has a dielectric reflective coating. The system has at least one terminal block connector which further comprises a cone termination block, a reflector, and a set of light guards. The cone termination block is spliced to an output end of the delivery fiber and produces an angle λ so as to reduce propagation of back-reflected light. The reflector is positioned so as to block additional back-reflected light from the protective layer of the delivery fiber.
摘要翻译：本公开是用于保护激光系统内的光纤的系统。该系统具有支撑端接块的水冷式壳体，该终端块可操作以将输送纤维的保护层与后反射光束屏蔽。端接块由石英制成，在结构上截头锥形，并与输送纤维相融合。输送纤维具有聚合物保护层，其具有接受端和输送端，并穿过包含在壳体内的垫圈; 垫圈具有介电反射涂层。该系统具有至少一个端子块连接器，其还包括锥形端接块，反射器和一组光保护器。锥形端接块被拼接到输送光纤的输出端，并产生角度λ，以便减少背反射光的传播。反射器被定位成阻挡来自输送纤维的保护层的附加的反射光。

7. 发明申请

US20110027720A1 Method and Device for Fabricating Volume Bragg Gratings 有权
标题翻译：制造体积布拉格光栅的方法和装置
公开(公告)号：US20110027720A1
公开(公告)日：2011-02-03
申请号：US12534437
申请日：2009-08-03
申请人： Alex Ovtchinnikov , Dmitry Starodubov , Alexey Komissarov , Valentin P. Gapontsev
发明人： Alex Ovtchinnikov , Dmitry Starodubov , Alexey Komissarov , Valentin P. Gapontsev
IPC分类号： G03F7/20
CPC分类号： G03F7/001 , G02B5/1857 , G03H1/0248 , G03H1/30 , G03H2001/0268 , G03H2001/205 , G03H2222/36 , G03H2227/03
摘要： A system for recording multiple volume Bragg gratings (VBGs) in a photo thermo-refractive material is configured to implement a method which provides for irradiating the material by a coherent light through a phase mask. The system has a plurality of actuators operative to displace the light source, phase mask and material relative to one another so as to mass produce multiple units of the material each having one or more uniformly configured VBGs.
摘要翻译：用于在光热折射材料中记录多个体积布拉格光栅（VBG）的系统被配置为实现提供通过相位掩模通过相干光照射材料的方法。该系统具有多个致动器，其可操作以相对于彼此移动光源，相位掩模和材料，以便大量产生每个具有一个或多个均匀配置的VBG的多个材料单元。

8. 发明授权

US07848368B2 Fiber laser system 有权
标题翻译：光纤激光系统
公开(公告)号：US07848368B2
公开(公告)日：2010-12-07
申请号：US12411732
申请日：2009-03-26
申请人： Valentin P. Gapontsev , Valentin Fomin , Nicholai Platonov
发明人： Valentin P. Gapontsev , Valentin Fomin , Nicholai Platonov
IPC分类号： H01S3/30
CPC分类号： H01S3/094003 , H01S3/0675 , H01S3/07 , H01S3/094007 , H01S3/094011 , H01S3/094046 , H01S3/1608 , H01S3/1618
摘要： A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable of generating an optical pump output at a wavelength shorter than the first wavelength of the rare-earth doped fiber. The pumping assembly has a plurality SM fiber lasers coupled to a SM-MM combiner which is operative to lunch the pump output into the cladding of the rare-earth doped fiber so that the powerful fiber laser system is operative to deliver a power of up to 20 kW.
摘要翻译：强大的光纤激光系统配置有至少一个大面积多包层稀土掺杂光纤，其被配置有能够传播第一波长的单模激光发射的MM核，以及至少一个泵组件能够产生比稀土掺杂光纤的第一波长短的波长的光泵输出。泵送组件具有耦合到SM-MM组合器的多个SM光纤激光器，其可操作以将泵输出午餐到稀土掺杂光纤的包层中，使得强大的光纤激光器系统可操作地传递高达 20 kW。

9. 发明申请

US20100098112A1 Method and apparatus for preventing distortion of powerful fiber-laser systems by backreflected signals 有权
标题翻译：用于通过反向反射信号防止强光纤激光系统失真的方法和装置
公开(公告)号：US20100098112A1
公开(公告)日：2010-04-22
申请号：US12288497
申请日：2008-10-21
申请人： Valentin P. Gapontsev , Eugene Shcherbakov , Valentin Fomin
发明人： Valentin P. Gapontsev , Eugene Shcherbakov , Valentin Fomin
IPC分类号： H01S3/30
CPC分类号： H01S3/2316 , H01S3/0064 , H01S3/0078 , H01S3/0675 , H01S3/094042 , H01S3/0941 , H01S2301/02
摘要： A powerful fiber laser system is configured with at least one filtering element capable of preventing a backreflected Raman component of the main signal from propagating along the upstream stretch of the system. The filtering element includes a slanted fiber grating, one or more cladding formations disposed in a cladding of fiber and having a refractive index greater than that one of the cladding, but lower than a refractive index of the core, and/or a combination of two spaced apart single mode fibers and a low mode fiber spliced to the opposing ends of the respective SM fibers.
摘要翻译：强大的光纤激光系统配置有至少一个能够防止主信号的后向反射拉曼分量沿着系统的上游延伸传播的滤波元件。滤光元件包括一个倾斜的光纤光栅，一个或多个包层结构设置在光纤的包层中，折射率大于该包层的折射率，但是低于芯的折射率，和/或二者的组合间隔开的单模光纤和低模式光纤接合到各个SM光纤的相对端。

10. 发明申请

US20090092157A1 Powerful fiber laser system 有权
公开(公告)号：US20090092157A1
公开(公告)日：2009-04-09
申请号：US11973437
申请日：2007-10-09
申请人： Valentin P. Gapontsev
发明人： Valentin P. Gapontsev
IPC分类号： H01S3/30
CPC分类号： H01S3/094003 , H01S3/0675 , H01S3/07 , H01S3/094007 , H01S3/094011 , H01S3/094046 , H01S3/1608 , H01S3/1618
摘要： A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable of generating an optical pump output at a wavelength shorter than the first wavelength of the rare-earth doped fiber. The pumping assembly has a plurality SM fiber lasers coupled to a SM-MM combiner which is operative to lunch the pump output into the cladding of the rare-earth doped fiber so that the powerful fiber laser system is operative to deliver a power of up to 20 kW.

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