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公开(公告)号：US07580431B2
公开(公告)日：2009-08-25
申请号：US10922925
申请日：2004-08-23
IPC分类号： H01S3/30
CPC分类号： H01S3/06754 , H01S3/06729 , H01S3/094003
摘要： An apparatus and method for high power amplification in a multimode fiber amplifier. The apparatus includes a diffraction limited low power laser, a multimode fiber amplifier, and a lens. The multimode fiber amplifier is coupled to the low power laser to amplify the low power laser output. The multimode fiber amplifier has a length that is set to a phase-matching length at which the transverse modes of the multimode fiber amplifier are in phase. The lens is coupled to the multimode fiber amplifier and outputs a kilowatt (KW)-level, diffraction-limited output beam from the multimode fiber amplifier.
摘要翻译： 一种用于多模光纤放大器中的大功率放大的装置和方法。 该装置包括衍射限制低功率激光器，多模光纤放大器和透镜。 多模光纤放大器耦合到低功率激光器以放大低功率激光输出。 多模光纤放大器的长度被设定为多模光纤放大器的横模同相的相位匹配长度。 透镜耦合到多模光纤放大器，并输出来自多模光纤放大器的千瓦（KW）级衍射极限输出光束。
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公开(公告)号：US20100195676A1
公开(公告)日：2010-08-05
申请号：US12320622
申请日：2009-01-30
申请人： Sami A. Shakir , Burke E. Nelson , William R. Culver , Michael M. Fitelson , Jerry W. Hedrick , George M. Bates
发明人： Sami A. Shakir , Burke E. Nelson , William R. Culver , Michael M. Fitelson , Jerry W. Hedrick , George M. Bates
CPC分类号： H01S3/094003 , G02B6/26 , G02B6/32 , G02B6/4214 , G02B6/4296 , H01S3/094019 , H01S3/094053 , H01S3/094057 , H01S3/09408 , H01S3/09415
摘要： A system and a method for coupling multiple pump light beams to an active fiber. The system including an inverted conical disk, concave lens or glass wedge, an active fiber placed in a center of the inverted conical disk (or concave lens) or at a bottom facet of the glass wedge and a plurality of pump light sources. The system further includes a plurality of lenses for focusing pump light beams from pump light sources towards a side of the inverted conical disk, concave lens or glass wedge, wherein the inverted conical disk, concave lens or glass wedge, couples the pump light beams into the active fiber.A method for coupling multiple pump light beams to an active fiber. The method includes providing an inverted conical disk, concave lens or glass wedge. The method further includes providing an active fiber in approximately the center of the inverted conical disk (or concave lens) or at a bottom facet of the glass wedge. The method further includes pump light sources for emitting pump light beams and focusing lenses for focusing pump light beams toward the axis of the active fiber. Pump light beams are emitted towards the side of the inverted conical disk, concave lens, or glass wedge and coupled to the active fiber.
摘要翻译： 用于将多个泵浦光束耦合到有源光纤的系统和方法。 该系统包括倒锥形盘，凹透镜或玻璃楔，放置在倒锥形盘（或凹透镜）的中心或玻璃楔的底面的有源光纤和多个泵浦光源。 该系统还包括多个透镜，用于将来自泵浦光源的泵浦光束朝向倒锥形盘，凹透镜或玻璃楔的一侧聚焦，其中倒置的圆锥盘，凹透镜或玻璃楔将泵浦光束耦合到 活性纤维。 一种将多个泵浦光束耦合到有源光纤的方法。 该方法包括提供倒圆锥盘，凹透镜或玻璃楔。 该方法还包括在倒锥形盘（或凹透镜）的大致中心处或玻璃楔的底面提供有源纤维。 该方法还包括用于发射泵浦光束的泵浦光源和用于将泵浦光束聚焦到有源光纤的轴线的聚焦透镜。 泵浦光束朝向倒锥形盘，凹透镜或玻璃楔的一侧发射并耦合到有源光纤。
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公开(公告)号：US07983313B2
公开(公告)日：2011-07-19
申请号：US12320622
申请日：2009-01-30
申请人： Sami A. Shakir , Burke E. Nelson , William R. Culver , Michael M. Fitelson , Jerry W. Hedrick , George M. Bates
发明人： Sami A. Shakir , Burke E. Nelson , William R. Culver , Michael M. Fitelson , Jerry W. Hedrick , George M. Bates
CPC分类号： H01S3/094003 , G02B6/26 , G02B6/32 , G02B6/4214 , G02B6/4296 , H01S3/094019 , H01S3/094053 , H01S3/094057 , H01S3/09408 , H01S3/09415
摘要： A system and a method for coupling multiple pump light beams to an active fiber. The system including an inverted conical disk, concave lens or glass wedge, an active fiber placed in a center of the inverted conical disk (or concave lens) or at a bottom facet of the glass wedge and a plurality of pump light sources. The system further includes a plurality of lenses for focusing pump light beams from pump light sources towards a side of the inverted conical disk, concave lens or glass wedge, wherein the inverted conical disk, concave lens or glass wedge, couples the pump light beams into the active fiber.A method for coupling multiple pump light beams to an active fiber. The method includes providing an inverted conical disk, concave lens or glass wedge. The method further includes providing an active fiber in approximately the center of the inverted conical disk (or concave lens) or at a bottom facet of the glass wedge. The method further includes pump light sources for emitting pump light beams and focusing lenses for focusing pump light beams toward the axis of the active fiber. Pump light beams are emitted towards the side of the inverted conical disk, concave lens, or glass wedge and coupled to the active fiber.
摘要翻译： 用于将多个泵浦光束耦合到有源光纤的系统和方法。 该系统包括倒锥形盘，凹透镜或玻璃楔，放置在倒锥形盘（或凹透镜）的中心或玻璃楔的底面的有源光纤和多个泵浦光源。 该系统还包括多个透镜，用于将来自泵浦光源的泵浦光束朝向倒锥形盘，凹透镜或玻璃楔的一侧聚焦，其中倒置的圆锥盘，凹透镜或玻璃楔将泵浦光束耦合到 活性纤维。 一种将多个泵浦光束耦合到有源光纤的方法。 该方法包括提供倒圆锥盘，凹透镜或玻璃楔。 该方法还包括在倒锥形盘（或凹透镜）的大致中心处或玻璃楔的底面提供有源纤维。 该方法还包括用于发射泵浦光束的泵浦光源和用于将泵浦光束聚焦到有源光纤的轴线的聚焦透镜。 泵浦光束朝向倒锥形盘，凹透镜或玻璃楔的一侧发射并耦合到有源光纤。
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4.发明授权System and method for combining multiple fiber amplifiers or multiple fiber lasers 有权用于组合多个光纤放大器或多个光纤激光器的系统和方法公开(公告)号：US08351114B2
公开(公告)日：2013-01-08
申请号：US12320681
申请日：2009-02-02
申请人： Burke E. Nelson , Sami A. Shakir , William R. Culver , Yuji S. Starcher , Jerry W. Hedrick , George M. Bates
发明人： Burke E. Nelson , Sami A. Shakir , William R. Culver , Yuji S. Starcher , Jerry W. Hedrick , George M. Bates
CPC分类号： G02B6/2835 , H01S3/06737 , H01S3/06745 , H01S3/06754 , H01S3/10015 , H01S3/1307 , H01S3/2383
摘要： A system for combining multiple fiber amplifiers, or multiple fiber amplifiers. The system includes a fiber combiner with multiple cores for connecting with the multiple fiber amplifiers and for combining the beams of the fiber amplifiers into a single beam. The fiber amplifiers are aligned, tapered, and stretched.A method for combining fiber amplifiers includes emitting a beam from a tapered fiber combiner and transmitting and coupling a portion of the emitted beam back into the fiber combiner via a feedback fiber. The transmission and coupling of the feedback fiber includes mixing the feedback fiber with the output of an auxiliary laser and boosting the feedback fiber by a pre-amplifier. The feedback fiber is split into a plurality of beams by a fiber splitter. The beams are fed into an array of fiber amplifiers and combined with output of the individual fiber amplifiers to form the tapered fiber combiner.
摘要翻译： 一种用于组合多个光纤放大器或多个光纤放大器的系统。 该系统包括具有多个芯的光纤组合器，用于与多个光纤放大器连接并将光纤放大器的光束组合成单个光束。 光纤放大器对齐，锥形和拉伸。 一种用于组合光纤放大器的方法包括从锥形光纤组合器发射光束，并通过反馈光纤将发射光束的一部分发射和耦合回光纤组合器。 反馈光纤的传输和耦合包括将反馈光纤与辅助激光器的输出进行混合，并通过前置放大器来增强反馈光纤。 反馈光纤被光纤分离器分成多个光束。 光束被馈送到光纤放大器的阵列中并与各个光纤放大器的输出相结合以形成锥形光纤组合器。
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5.发明申请System and method for combining multiple fiber amplifiers or multiple fiber lasers 有权用于组合多个光纤放大器或多个光纤激光器的系统和方法公开(公告)号：US20100195195A1
公开(公告)日：2010-08-05
申请号：US12320681
申请日：2009-02-02
申请人： Burke E. Nelson , Sami A. Shakir , William R. Culver , Yuji S. Starcher , Jerry W. Hedrick , George M. Bates
发明人： Burke E. Nelson , Sami A. Shakir , William R. Culver , Yuji S. Starcher , Jerry W. Hedrick , George M. Bates
IPC分类号： H04B10/12
CPC分类号： G02B6/2835 , H01S3/06737 , H01S3/06745 , H01S3/06754 , H01S3/10015 , H01S3/1307 , H01S3/2383
摘要： A system for combining multiple fiber amplifiers, or multiple fiber amplifiers. The system includes a fiber combiner with multiple cores for connecting with the multiple fiber amplifiers and for combining the beams of the fiber amplifiers into a single beam. The fiber amplifiers are aligned, tapered, and stretched.A method for combining fiber amplifiers includes emitting a beam from a tapered fiber combiner and transmitting and coupling a portion of the emitted beam back into the fiber combiner via a feedback fiber. The transmission and coupling of the feedback fiber includes mixing the feedback fiber with the output of an auxiliary laser and boosting the feedback fiber by a pre-amplifier. The feedback fiber is split into a plurality of beams by a fiber splitter. The beams are fed into an array of fiber amplifiers and combined with output of the individual fiber amplifiers to form the tapered fiber combiner.
摘要翻译： 一种用于组合多个光纤放大器或多个光纤放大器的系统。 该系统包括具有多个芯的光纤组合器，用于与多个光纤放大器连接并将光纤放大器的光束组合成单个光束。 光纤放大器对齐，锥形和拉伸。 一种用于组合光纤放大器的方法包括从锥形光纤组合器发射光束，并通过反馈光纤将发射光束的一部分发射和耦合回光纤组合器。 反馈光纤的传输和耦合包括将反馈光纤与辅助激光器的输出进行混合，并通过前置放大器来增强反馈光纤。 反馈光纤被光纤分离器分成多个光束。 光束被馈送到光纤放大器的阵列中并与各个光纤放大器的输出相结合以形成锥形光纤组合器。
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公开(公告)号：US07130113B2
公开(公告)日：2006-10-31
申请号：US11015671
申请日：2004-12-20
CPC分类号： H01S3/2383 , G02B6/2817 , G02B27/108 , G02B27/144 , H01S3/005 , H01S3/0064 , H01S3/06754 , H01S3/06758 , H01S3/10092 , H01S3/1302 , H01S3/1307
摘要： A method passively locks and phases an array of fiber amplifiers in a fiber amplifier system that emits a beam, such as a laser beam. The method locks the fiber amplifiers so that the fiber amplifiers operate at same or similar frequencies. The method samples a small portion of the emitted beam in a far-field around a central lobe on an optical axis and then couples this portion of emitted beam back into the array of fiber amplifiers. The fiber amplifiers may be phased so that the emitted beam concentrates its energy around the central lobe in the far-field. Phasing may be achieved by using an aperture, for example, to restrict the portion of the emitted beam to be coupled back to a restricted region around the optical axis.
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7.发明授权Method and system for diffractive beam combining using DOE combiner with passive phase control 有权使用DOE组合器与被动相位控制的衍射光束组合的方法和系统公开(公告)号：US07339727B1
公开(公告)日：2008-03-04
申请号：US11543613
申请日：2006-10-05
IPC分类号： H01S3/00
CPC分类号： H01S3/06791 , H01S3/0805 , H01S3/0812 , H01S3/10053 , H01S3/2383
摘要： A system and method for combining plural low power light beams into a coherent high power light beam. Optical amplifiers transmit a plurality of light beams propagating at a common wavelength through an array of optical fiber emitters. Each constituent beam is emitted from the array at a different propagation angle, collimated, and incident on a diffractive optical element operating as a beam combiner such that incident beams when properly phased and located are combined into a coherent beam at a desired diffraction order. A beam splitter or a periodic sampling grating on the diffractive optical element directs a low power sample beam to a spatial filter passing resonant mode output back to the optical amplifiers in a ring laser configuration thereby passively synchronizing phases of the constituent beams to maximize combination efficiency of the coherent beam.
摘要翻译： 一种用于将多个低功率光束组合成相干高功率光束的系统和方法。 光放大器通过光纤发射器阵列发射以公共波长传播的多个光束。 每个构成光束以阵列的不同传播角发射，准直并入射在作为光束组合器工作的衍射光学元件上，使得入射光束在适当地定相并定位时，以期望的衍射级组合成相干光束。 衍射光学元件上的分束器或周期性采样光栅将低功率采样光束引导到以环形激光器配置将谐振模式输出回到光放大器的空间滤波器，从而被动地同步构成光束的相位，以最大化组合效率 相干光束。
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公开(公告)号：US07221499B2
公开(公告)日：2007-05-22
申请号：US11254933
申请日：2005-10-19
申请人： Robert R. Rice , Sami A. Shakir
发明人： Robert R. Rice , Sami A. Shakir
IPC分类号： H01S3/00
CPC分类号： H01S3/06754 , G02B6/4249 , H01S3/1301 , H01S3/2383
摘要： An optical fiber amplifier array and related method, in which high beam quality is achieved by varying the frequency of an input signal applied to all of the fiber amplifiers, to locate a frequency at which the amplifiers produce nearly coherent optical outputs. In spite of statistical variations in length and other factors among the fibers, there are frequencies at which the amplifiers produce nearly coherent outputs. In the control system of the invention, the input signal frequency is scanned across a selected narrow range and the beam quality is monitored by measuring on-axis far-field output beam intensity. The frequency is scanned until the beam intensity exceeds a selected threshold, and then the frequency is held constant until the beam intensity falls below a second selected threshold.
摘要翻译： 一种光纤放大器阵列和相关方法，其中通过改变施加到所有光纤放大器的输入信号的频率来实现远光质量，以定位放大器产生近似相干光输出的频率。 尽管纤维之间的长度和其他因素的统计变化，放大器产生几乎相干输出的频率。 在本发明的控制系统中，输入信号频率在选定的窄范围内扫描，并且通过测量轴上远场输出光束强度来监视光束质量。 扫描频率直到光束强度超过所选择的阈值，然后频率保持恒定，直到光束强度低于第二选定阈值。
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