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1. 发明授权

US09063289B1 Multimode fiber combiners 有权
标题翻译：多模光纤组合器
公开(公告)号：US09063289B1
公开(公告)日：2015-06-23
申请号：US12495746
申请日：2009-06-30
申请人： Jason N. Farmer , Ronii C. Mehl , Robert G. Waarts
发明人： Jason N. Farmer , Ronii C. Mehl , Robert G. Waarts
IPC分类号： G02B6/26 , G02B6/28 , G02B6/287
CPC分类号： G02B6/2821 , G02B6/02366 , G02B6/0283 , G02B6/0285 , G02B6/0288 , G02B6/03638 , G02B6/0365 , G02B6/03672 , G02B6/03683 , G02B6/10 , G02B6/2552 , G02B6/28 , G02B6/2804 , G02B6/2835 , G02B6/2856 , G02B6/287 , G02B6/4203 , G02B6/4296 , G02B27/106 , G02B27/1073 , H01S5/4012
摘要： Multimode beam combiners include at least one gradient-step index optical fiber in which a refractive index difference at a core/cladding interface is selected to provide a numerical aperture so as to provide stable, uniform beam output. One or more such fibers is formed into a tapered bundle than can be shaped to provide a selected illuminated aperture. The fibers in the bundle can be separated by respective tapered claddings so as to be optically coupled or uncoupled. Illumination systems can include a plurality of such fibers coupled to a plurality of laser diodes or other light sources.
摘要翻译：多模光束组合器包括至少一个梯度折射率光纤，其中选择芯/包层界面处的折射率差以提供数值孔径，以便提供稳定，均匀的光束输出。一个或多个这样的纤维形成为可以被成形为提供所选择的照明孔径的锥形束。束中的纤维可以通过相应的锥形包层分离，以便被光耦合或非耦合。照明系统可以包括耦合到多个激光二极管或其它光源的多个这样的光纤。

2. 发明授权

US08711471B2 High power fiber amplifier with stable output 有权
标题翻译：大功率光纤放大器输出稳定
公开(公告)号：US08711471B2
公开(公告)日：2014-04-29
申请号：US12757737
申请日：2010-04-09
申请人： Chang Liu , Jason N. Farmer , Anmol Nijjar , Xiaojun Li
发明人： Chang Liu , Jason N. Farmer , Anmol Nijjar , Xiaojun Li
IPC分类号： H01S3/098
CPC分类号： H01S3/06754 , G02B6/14 , H01S3/06704 , H01S3/08045 , H01S3/09415 , H01S3/1618
摘要： A stable, single mode fiber amplifier is described. The amplifier consists of a seed source, a passive single clad multimode fiber, an active double clad multimode fiber or a multimode fiber horn and a semiconductor laser pump source. The passive fiber is packaged on a mandrel with a compound radius of curvature such that high order modes in the fiber are stripped from the core leaving only the fundamental mode. This fiber is then spliced to a multimode active fiber of similar core diameter. By exciting only the fundamental mode of this active fiber, stable single mode amplification is achieved.
摘要翻译：描述了稳定的单模光纤放大器。放大器由种子源，无源单包层多模光纤，有源双包层多模光纤或多模光纤喇叭和半导体激光泵源组成。无源光纤被封装在具有复合曲率半径的心轴上，使得光纤中的高阶模从芯中剥离，仅留下基本模式。然后将该纤维接合到具有相似纤芯直径的多模有源纤维。通过仅激发这种有源光纤的基本模式，实现了稳定的单模放大。

3. 发明授权

US06907051B1 Dynamically spectrally tailored raman pump laser 有权
标题翻译：动态光谱定制拉曼泵激光器
公开(公告)号：US06907051B1
公开(公告)日：2005-06-14
申请号：US09945370
申请日：2001-08-31
申请人： Jason N. Farmer
发明人： Jason N. Farmer
IPC分类号： H01S3/00 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/13 , H01S3/30 , H01S5/00 , H01S5/0683 , H01S5/14 , H01S5/40
CPC分类号： H01S5/4062 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/302 , H01S5/005 , H01S5/0683 , H01S5/141 , H01S5/143 , H01S5/146
摘要： The present invention is directed to a system and method which provide a Raman pump which is spectrally tailored in response to feedback from control structure associated with the Raman pump source. In certain embodiments of the present inventions, an incoherently beam combined laser (IBC) is utilized to provide a spectrally tailored Raman pump. In these embodiments, emitters in an emitter array are either individually addressable or block addressable to facilitate adjustment of emitter output power. By adjustment of the output power, the Raman pump may be spectrally tailored. The spectral tailoring can occur by employing suitable control algorithms to algorithms to dynamically maintain reasonably flat Raman gain.
摘要翻译：本发明涉及一种系统和方法，其提供拉曼泵，该拉曼泵响应于与拉曼泵浦源相关联的控制结构的反馈进行光谱定制。在本发明的某些实施例中，使用非相干光束组合激光器（IBC）来提供光谱定制的拉曼泵。在这些实施例中，发射器阵列中的发射器可单独寻址或可寻址以便于调节发射器输出功率。通过调节输出功率，拉曼泵可以进行光谱定制。频谱裁剪可以通过采用合适的控制算法进行算法来动态地维持相当平坦的拉曼增益。

4. 发明授权

US09494738B1 Single mode fiber combiners 有权
标题翻译：单模光纤组合器
公开(公告)号：US09494738B1
公开(公告)日：2016-11-15
申请号：US12474210
申请日：2009-05-28
申请人： Jason N. Farmer , Robert G. Waarts , John Edgecumbe
发明人： Jason N. Farmer , Robert G. Waarts , John Edgecumbe
IPC分类号： G02B6/26 , G02B6/42 , G02B6/122 , G02B6/28
CPC分类号： G02B6/1228 , G02B6/03633 , G02B6/14 , G02B6/2835 , G02B6/2856 , H01S3/06729 , H01S3/06737 , H01S3/06745 , H01S3/094019 , H01S3/2383 , H01S5/4012
摘要： Single mode fiber beam combiners are formed by extending single mode fibers through a glass ferrule, and tapering and fusing the fibers and the ferrule. Tapers can be selected so that optical power input to each of the single mode fibers remains partially guided by the single mode fiber cladding, or is guided by the multimode fiber formed by the glass ferrule and the fused fiber claddings. Such combiners can include double clad fibers or actively doped fibers for use in lasers or amplifiers.
摘要翻译：单模光纤束组合器通过将单模光纤延伸穿过玻璃套圈而形成，并使纤维和套圈逐渐变细并融合。可以选择锥度，使得输入到每个单模光纤的光功率保持部分地由单模光纤包层引导，或者由由玻璃套圈和熔融纤维包层形成的多模光纤引导。这种组合器可以包括用于激光器或放大器的双包层光纤或有源掺杂光纤。

5. 发明授权

US09044829B2 Fiber laser systems for cold ablation 有权
标题翻译：用于冷切割的光纤激光系统
公开(公告)号：US09044829B2
公开(公告)日：2015-06-02
申请号：US12942888
申请日：2010-11-09
申请人： Jordan Crist , Jason N. Farmer , Robert G. Waarts
发明人： Jordan Crist , Jason N. Farmer , Robert G. Waarts
IPC分类号： B23K26/00 , B23K26/36 , B23K26/06 , B23K26/40
CPC分类号： B23K26/36 , B23K26/0624 , B23K26/40 , B23K2101/40 , B23K2103/50
摘要： Scribing operations with reduced substrate heating can be provided by applying multiple optical pulses to a substrate within a time interval that is less than a material recombination time. Typically a series of pulses of durations of 5-200 ps with pulse energies of less than about 0.002 mJ can be applied at rates of about 1 MHz to about 30 MHz. Beam area and beam scanning are configured to provide substantial overlap so that material can be removed by cold ablation.
摘要翻译：可以通过在小于材料复合时间的时间间隔内对衬底施加多个光脉冲来提供具有减少衬底加热的划线操作。通常，脉冲能量小于约0.002mJ的持续时间为5-200ps的一系列脉冲可以以约1MHz至约30MHz的速率施加。波束区域和波束扫描被配置为提供实质的重叠，使得材料可以通过冷烧蚀去除。

6. 发明申请

US20120262781A1 HYBRID LASER AMPLIFIER SYSTEM INCLUDING ACTIVE TAPER 有权
标题翻译：混合激光放大器系统，包括有源插槽
公开(公告)号：US20120262781A1
公开(公告)日：2012-10-18
申请号：US13418262
申请日：2012-03-12
申请人： R. Kirk Price , Joseph G. LaChapelle , Matthieu Saracco , Timothy S. McComb , Jason N. Farmer
发明人： R. Kirk Price , Joseph G. LaChapelle , Matthieu Saracco , Timothy S. McComb , Jason N. Farmer
IPC分类号： H01S3/067
CPC分类号： H01S3/06754 , G02B6/14 , H01S3/0057 , H01S3/0092 , H01S3/06745 , H01S3/08045 , H01S3/09415 , H01S3/1618 , H01S2301/03
摘要： Hybrid laser systems include fiber amplifiers using tapered waveguides and solid-state amplifiers. Typically, such systems represent a technically simple and low cost approach to high peak power pulsed laser systems. The tapered waveguides generally are provided with an active dopant such as a rare earth element that is pumped with one or more semiconductor lasers. The active waveguide taper is selected to taper from a single or few mode section to a multimode section. A seed beam in a fundamental mode is provided to a section of the waveguide taper associated with a smaller optical mode, and an amplified beam exits the waveguide taper at a section associated with a larger optical mode. The waveguide taper permits amplification to higher peak power values than comparable small mode area fibers. The fiber amplified beam is then directed to a solid state amplifier, such as a thin disk or rod-type laser amplifier.
摘要翻译：混合激光系统包括使用锥形波导和固态放大器的光纤放大器。通常，这种系统代表了对高峰值功率脉冲激光系统的技术上简单且低成本的方法。锥形波导通常设置有有源掺杂剂，例如用一个或多个半导体激光器泵浦的稀土元素。选择有源波导锥度从单个或几个模式部分到多模部分逐渐变细。将基本模式的种束提供给与更小的光学模式相关联的波导锥度的一部分，并且放大的光束在与更大的光学模式相关联的部分处离开波导锥形。波导锥度允许放大到比可比较的小模面积光纤更高的峰值功率值。光纤放大光束然后被引导到固态放大器，例如薄盘或棒式激光放大器。

7. 发明申请

US20110058250A1 HIGH POWER FIBER AMPLIFIER WITH STABLE OUTPUT 有权
标题翻译：具有稳定输出的高功率光纤放大器
公开(公告)号：US20110058250A1
公开(公告)日：2011-03-10
申请号：US12757737
申请日：2010-04-09
申请人： Chang Liu , Jason N. Farmer , Anmol Nijjar , Xiaojun Li
发明人： Chang Liu , Jason N. Farmer , Anmol Nijjar , Xiaojun Li
IPC分类号： H01S3/067
CPC分类号： H01S3/06754 , G02B6/14 , H01S3/06704 , H01S3/08045 , H01S3/09415 , H01S3/1618
摘要： A stable, single mode fiber amplifier is described. The amplifier consists of a seed source, a passive single clad multimode fiber, an active double clad multimode fiber or a multimode fiber horn and a semiconductor laser pump source. The passive fiber is packaged on a mandrel with a compound radius of curvature such that high order modes in the fiber are stripped from the core leaving only the fundamental mode. This fiber is then spliced to a multimode active fiber of similar core diameter. By exciting only the fundamental mode of this active fiber, stable single mode amplification is achieved.
摘要翻译：描述了稳定的单模光纤放大器。放大器由种子源，无源单包层多模光纤，有源双包层多模光纤或多模光纤喇叭和半导体激光泵源组成。无源光纤被封装在具有复合曲率半径的心轴上，使得光纤中的高阶模从芯中剥离，仅留下基本模式。然后将该纤维接合到具有相似纤芯直径的多模有源纤维。通过仅激发这种有源光纤的基本模式，实现了稳定的单模放大。

8. 发明授权

US06952510B1 Optically corrected intracavity fiber coupled multigain element laser 失效
标题翻译：光学校正腔内光纤耦合多元素激光器
公开(公告)号：US06952510B1
公开(公告)日：2005-10-04
申请号：US10153363
申请日：2002-05-22
申请人： Scott R. Karlsen , Mark R. Pratt , Jason N. Farmer
发明人： Scott R. Karlsen , Mark R. Pratt , Jason N. Farmer
IPC分类号： G02B6/32 , G02B6/34 , G02B27/09 , H01S5/00 , H01S5/14 , H01S5/40
CPC分类号： G02B19/0057 , G02B19/0014 , G02B27/0955 , G02B27/0961 , H01S5/02284 , H01S5/141 , H01S5/143 , H01S5/146 , H01S5/4012 , H01S5/4062 , H01S5/4087
摘要： An optic device is placed in close proximity to multiple gain elements so as to selectively modify the divergence of the light from said multiple elements such that when the light is subsequently collimated and diffracted from a grating and focused into an optical fiber, it will have a predefined cross-section that matches the mode of the fiber. Using this system and method, a more efficient light transfer is achieved in an intracavity fiber coupled multigain element laser.
摘要翻译：将光学器件放置在靠近多个增益元件的位置，以便选择性地修改来自所述多个元件的光的发散，使得当光随后被准直并从光栅衍射并聚焦成光纤时，其将具有与光纤模式匹配的预定义横截面。使用该系统和方法，在腔内光纤耦合多元素激光器中实现更有效的光传输。

9. 发明授权

US06836487B1 Spectrally tailored raman pump laser 有权
标题翻译：光谱定制拉曼泵激光器
公开(公告)号：US06836487B1
公开(公告)日：2004-12-28
申请号：US09945381
申请日：2001-08-31
申请人： Jason N. Farmer , Richard D. Romea , Scott H. Keeney
发明人： Jason N. Farmer , Richard D. Romea , Scott H. Keeney
IPC分类号： H01S330
CPC分类号： H04B10/294 , H04B10/2916
摘要： The present invention is directed to a system and method for providing a spectrally tailored Raman pump. The system and method employ an incoherently beam combined laser configuration to combine output beams from a plurality of emitters. Embodiments of the present invention provide emitter devices with electrodes adapted to allow addressability of various emitters. In some embodiments, each emitter is individually addressable thereby allowing the output power of each emitter to be controlled by a drive current. In another embodiment, blocks of emitters are coupled to a single current source. Each emitter of a block is operated at a common power level. In certain embodiments, blocks of emitters are driven at current levels significantly greater than the threshold current for the emitters to increase operating efficiency. Moreover, certain embodiments vary emitter spacing to increase linear power density and/or to allocate additional power to the blue end of the Raman pump. By providing spectral tailoring, embodiments of the present invention are capable of providing reasonable flat Raman gain over relatively broad spectrum.
摘要翻译：本发明涉及一种用于提供光谱定制的拉曼泵的系统和方法。该系统和方法采用非相干光束组合激光器配置来组合来自多个发射器的输出光束。本发明的实施例提供具有适于允许各种发射器的寻址能力的电极的发射器装置。在一些实施例中，每个发射器可单独寻址，从而允许每个发射器的输出功率由驱动电流控制。在另一个实施例中，发射体块耦合到单个电流源。块的每个发射器在公共功率电平下工作。在某些实施例中，发射器块以比发射器增加操作效率的阈值电流的电流水平被驱动。此外，某些实施例改变发射极间距以增加线性功率密度和/或向拉曼泵的蓝色端分配附加功率。通过提供频谱裁剪，本发明的实施例能够在相对宽的频谱上提供合理的平坦拉曼增益。

10. 发明授权

US06456756B1 Fiber raman amplifier pumped by an incoherently beam combined diode laser 有权
标题翻译：通过非相干光束组合二极管激光器泵浦光纤拉曼放大器
公开(公告)号：US06456756B1
公开(公告)日：2002-09-24
申请号：US09690787
申请日：2000-10-17
申请人： Roy D. Mead , Dennis D. Lowenthal , Jason N. Farmer
发明人： Roy D. Mead , Dennis D. Lowenthal , Jason N. Farmer
IPC分类号： G02B628
CPC分类号： G02B6/425 , G02B6/2931 , G02B6/4249 , H04B10/2916
摘要： A method and apparatus for achieving broad gain bandwidth in a Raman amplifier using a wavelength multiplexed pump source is provided. The pump source offers high power, broad bandwidth, and the ability to tailor the pump spectrum, thus providing a means to achieve gain flattening within a specific band of the Raman amplifier. The pump source is preferably comprised of one or more multi-gain element arrays multiplexed together within a single external resonator cavity. Interposed between the array and the resonator cavity output coupler are a collimating element and a diffraction grating. The collimating element can be a refractive optic, a ¼ pitch GRIN lens, or a reflective optic. The diffraction grating can either be transmissive or reflective. The combination of the diffraction grating and the collimating element forces each emitter within the array to lase at a distinct wavelength. In order to achieve an overall bandwidth greater than the gain bandwidth of a single emitter array, either multiple arrays of differing center wavelength are packaged together or a large array is used with a laterally varying quantum well thickness or epitaxy. An intracavity spatial filter can be used to improve the beam quality and reduce cross-talk between emitters.
摘要翻译：提供了一种使用波长复用泵浦源实现拉曼放大器中的宽增益带宽的方法和装置。泵浦源提供高功率，宽带宽和定制泵浦频谱的能力，从而提供了在拉曼放大器的特定频带内实现增益平坦化的手段。泵浦源优选地由单个外部谐振器腔内一起复用的一个或多个多增益元件阵列组成。阵列与谐振腔输出耦合器之间是一个准直元件和衍射光栅。准直元件可以是折射光学元件，1/4间距GRIN透镜或反射光学元件。衍射光栅可以是透射的或反射的。衍射光栅和准直元件的组合迫使阵列内的每个发射器以不同的波长发光。为了实现大于单个发射器阵列的增益带宽的总带宽，将不同中心波长的多个阵列封装在一起，或者使用具有横向变化的量子阱厚度或外延的大阵列。可以使用腔内空间滤波器来提高光束质量并减少发射器之间的串扰。

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