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1. 发明申请

WO2008045654A3 METHOD AND SYSTEM FOR HYBRID COHERENT AND INCOHERENT DIFFRACTIVE BEAM COMBINING 审中-公开
标题翻译：混合相干和不饱和衍射光束组合的方法和系统
公开(公告)号：WO2008045654A3
公开(公告)日：2008-06-12
申请号：PCT/US2007078288
申请日：2007-09-12
申请人： NORTHROP GRUMMAN CORP , ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G
发明人： ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G
IPC分类号： H01S3/00 , B23K26/06 , G02B27/10
CPC分类号： B23K26/0604 , B23K26/067 , B23K26/705 , H01S3/005 , H01S3/1307 , H01S3/2391
摘要： A plurality of coherent and incoherent light beams are combined into a composite high power diffraction limited beam by N oscillators (11), each transmitting light at one of N different wavelengths, each wavelength being split into M constituent beams. M beams in each of N groups are phase locked by a phase modulator (14), amplified, and coupled into an M x N fiber array (19). Beams from the array are collimated and incident 'on an optical beam combiner. The N single beams are incident and spectrally combined on a grating (25) which outputs a composite beam at a nominal 100% fill factor. A low power sample beam, taken from the N beams emerging from the optical combiner, is measured for phase deviations, from which phase correction signals are derived and fed back to the phase modulators (14).
摘要翻译：由N个振荡器（11）将多个相干和非相干光束组合成复合高功率衍射受限束，每个振荡器以N个不同波长中的一个发射光，每个波长被分成M个构成光束。 N组中的每一个的M个波束由相位调制器（14）锁相，被放大并耦合到M×N个光纤阵列（19）中。来自阵列的光束被准直并入射到光束组合器上。 N个单个光束入射并光谱地组合在光栅（25）上，该光栅以标称100％填充因子输出复合光束。测量从光合并器出射的N个光束取得的低功率采样光束，用于相位偏移，相位校正信号从该衍射并被反馈到相位调制器（14）。

2. 发明申请

WO2008045653A3 METHOD AND SYSTEM FOR COHERENT BEAM COMBINING USING AN INTEGRATED DIFFRACTIVE BEAM COMBINER AND SAMPLER 审中-公开
标题翻译：使用集成差分光束组合器和采样器的相干光束组合的方法和系统
公开(公告)号：WO2008045653A3
公开(公告)日：2009-03-12
申请号：PCT/US2007078275
申请日：2007-09-12
申请人： NORTHROP GRUMMAN CORP , ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G , KOMINE HIROSHI
发明人： ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G , KOMINE HIROSHI
IPC分类号： B23K26/06 , G02B27/10 , H01S3/23
CPC分类号： H01S3/2383 , B23K26/0604 , B23K26/0613 , H01S3/06754 , H01S3/10007
摘要： A system and method for combining low power light beams into a coherent high power light beam. An oscillation source transmits a master signal that is split into plural beams propagating at a common wavelength. Each beam is phase locked by a corresponding phase modulator according to a phase correction signal. The beams are directed to the diffractive optical element for combination of the beams at a desired diffraction order. The diffractive optical element includes a periodic sampling grating. A phase detection stage detects phases of constituent beams in the sample beam from which the phase correction signals are derived and fed back to the phase modulators.
摘要翻译：一种用于将低功率光束组合成相干高功率光束的系统和方法。振荡源发送分割成以公共波长传播的多个波束的主信号。每个光束根据相位校正信号由相应的相位调制器锁相。光束被引导到衍射光学元件，用于以期望的衍射级组合光束。衍射光学元件包括周期性采样光栅。相位检测级检测相位校正信号从中得到的采样光束中的构成光束的相位，并将其反馈到相位调制器。

3. 发明申请

WO2008045652A3 METHOD AND SYSTEM FOR DIFFRACTIVE BEAM COMBINING USING DOE COMBINER WITH PASSIVE PHASE CONTROL 审中-公开
标题翻译：使用DOE组合器进行无源相位控制的差分光束组合方法和系统
公开(公告)号：WO2008045652A3
公开(公告)日：2008-06-19
申请号：PCT/US2007078272
申请日：2007-09-12
申请人： NORTHROP GRUMMAN CORP , ROTHENBERG JOSHUA E , RICE ROBERT R , SHAKIR SAMI A , WICKHAM MICHAEL G
发明人： ROTHENBERG JOSHUA E , RICE ROBERT R , SHAKIR SAMI A , WICKHAM MICHAEL G
IPC分类号： G02B27/14 , H01S3/00
CPC分类号： B23K26/0604 , B23K26/0613 , G02B19/0014 , G02B19/0057 , G02B27/108 , G02B27/1093 , H01S3/005 , H01S3/2383 , H01S5/4025
摘要： A system and method for combining plural low power light beams uses optical amplifiers (15) to transmit a plurality of light beams propagating at a common wavelength through an array of optical fiber emitters. The beams emitted from the array at a different propagation angles, are collimated, and incident on a dif tractive optical element (25) for combination 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 (31) to a spatial filter that passes" an output back to the optical amplifiers for synchronizing phases of the constituenb beams.
摘要翻译：用于组合多个低功率光束的系统和方法使用光放大器（15）来发射通过光纤发射器阵列以普通波长传播的多个光束。以不同的传播角度从阵列发射的光束被准直，入射到一个不利的光学元件（25）上，用于以期望的衍射级数组合成相干光束。光束分离器或衍射光学元件上的周期性采样光栅将低功率采样光束（31）引导到空间滤波器，该空间滤波器将输出返回到用于同步波束的相位的光放大器。

4. 发明申请

WO2008045655A2 MULTI-STAGE METHOD AND SYSTEM FOR COHERENT DIFFRACTIVE BEAM COMBINING 审中-公开
标题翻译：多相差分波束组合的多级方法和系统
公开(公告)号：WO2008045655A2
公开(公告)日：2008-04-17
申请号：PCT/US2007078301
申请日：2007-09-12
申请人： NORTHROP GRUMMAN CORP , ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G
发明人： ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G
CPC分类号： G02B27/0087 , G02B19/0014 , G02B19/0057 , G02B27/0944 , G02B27/108 , G02B27/1093 , G02B27/144 , G02B27/145 , H01S3/005 , H01S3/1307 , H01S3/2383
摘要： A system or method for combining a large number of light beams at a single wavelength into a high-power beam uses a master oscillator transmitting a light beam to a first phase modulation stage, which splits the beam into N beams and locks the beam phases. A second phase modulation stage splits each N beam into M beams and locks the phases of M beams in each N group. A two-dimensional fiber array directs M x N beams to a first diffractive optical element combining the beams into N coherent beams of M beams each. Phase correction signals for the second stage are derived from a sample extracted from the N coherent beams. A second diffractive optical element combines the N coherent beams into the output beam using sample extracted from the output as corrections signals from the first stage.
摘要翻译：用于将单个波长的大量光束组合成高功率光束的系统或方法使用将光束发射到第一相位调制级的主振荡器，该第一相位调制级将光束分成N束并锁定光束相位。第二相位调制级将每个N波束分成M波束，并锁定每个N组中的M波束的相位。二维光纤阵列将M×N波束引导到第一衍射光学元件，该光学元件将光束组合成每个M束的N个相干光束。第二级的相位校正信号是从从N个相干光束中提取的样本导出的。第二衍射光学元件使用从输出提取的样本作为来自第一级的校正信号将N个相干光束组合成输出光束。

5. 发明申请

WO2006001838A2 SCALABLE HARMONIC LASER SOURCE AND METHOD 审中-公开
标题翻译：可调谐谐波激光源和方法
公开(公告)号：WO2006001838A2
公开(公告)日：2006-01-05
申请号：PCT/US2005000754
申请日：2005-01-11
申请人： NORTHROP GRUMMAN CORP , ROTHENBERG JOSHUA E , CHEUNG ERIC C T , KOMINE HIROSHI , WICKHAM MICHAEL G
发明人： ROTHENBERG JOSHUA E , CHEUNG ERIC C T , KOMINE HIROSHI , WICKHAM MICHAEL G
IPC分类号： H01S3/00 , G02F1/37 , H01S3/067 , H01S3/08 , H01S3/10 , H01S3/23 , H01S3/30 , H01S5/14
CPC分类号： H01S5/14 , G02F1/37 , H01S3/06754 , H01S3/2383
摘要： A laser array architecture scalable to very high powers by closely stacking fiber amplifiers, but in which the output wavelength is selectable to be in the visible or ultraviolet region, without being restricted by the wavelengths usually inherent in the choice of fiber materials. A pump signal at a fundamental frequency is amplified in the fiber amplifier array and input to an array of nonlinear crystals that function as harmonic generators, producing an output array at a desired harmonic of the fundamental frequency. A phase detection and correction system maintains the array of outputs in phase coherency, resulting in a high power output with high beam quality, at the desired frequency. The array of nonlinear crystals may a single array to produce a second harmonic output frequency, or a combination of multiple cascaded arrays configured to produce a selected higher order harmonic frequency.
摘要翻译：通过紧密地堆叠光纤放大器，可将激光器阵列架构扩展到非常高的功率，但其中输出波长可选择在可见光或紫外区域，而不受光纤材料选择固有的波长限制。基频处的泵浦信号在光纤放大器阵列中被放大并输入到用作谐波发生器的非线性晶体阵列，从而以期望的基频谐波产生输出阵列。相位检测和校正系统使输出阵列保持相位一致性，以期望的频率产生具有高光束质量的高功率输出。非线性晶体阵列可以是产生二次谐波输出频率的单个阵列，或者是配置成产生选定的更高次谐波频率的多个级联阵列的组合。

6. 发明申请

WO2005062090A3 HIGH ENERGY PHOTONIC ARBITRARY WAVEFORM SOURCE 审中-公开
标题翻译：高能光伏仲波源
公开(公告)号：WO2005062090A3
公开(公告)日：2005-10-27
申请号：PCT/US2004041352
申请日：2004-11-23
申请人： NORTHROP GRUMMAN CORP , WICKHAM MICHAEL G , KOMINE HIROSHI , CHEUNG ERIC
发明人： WICKHAM MICHAEL G , KOMINE HIROSHI , CHEUNG ERIC
IPC分类号： G02B27/09 , G02F1/01 , H01S3/00 , H01S3/067 , H01S3/10 , H01S3/23
CPC分类号： G02B27/0938 , G02B27/0905 , G02F2203/26 , G02F2203/54 , H01S3/0057 , H01S3/0078 , H01S3/06754 , H01S3/10038 , H01S3/10053 , H01S3/2383
摘要： A high-energy optical beam generator providing a desired output waveform. The generator includes a master oscillator (10), such as a mode-locked laser (40), to generate an input beam, a first dispersive element (14) to decompose the input beam into frequency components, a set of phase and amplitude modulators (16) to modulate the frequency components individually, a set of power amplifiers (18) to amplify the frequency components individually, and a second dispersive element (20) to recombine the amplified and modulated frequency components into a single output beam (22). Phase control electronics (60) control the modulators (16) to provide the desired waveform for the output beam (22), based on its intended application and on sensed characteristics of the input beam and the output beam.
摘要翻译：提供所需输出波形的高能光束发生器。发生器包括主振荡器（10），例如锁模激光器（40），以产生输入光束;第一色散元件（14），用于将输入光束分解成频率分量;一组相位和幅度调制器（16）分别调制频率分量，一组用于单独放大频率分量的功率放大器（18），以及第二色散元件（20），用于将放大和调制的频率分量复合到单个输出光束（22）中。相位控制电子器件（60）基于其预期应用以及感测到的输入光束和输出光束的特性来控制调制器（16）以为输出光束（22）提供期望的波形。

7. 发明申请

WO2008105912A3 PULSED COHERENT FIBER ARRAY LASER AND ITS METHOD OF OPERATION 审中-公开
标题翻译：脉冲相干光纤阵列激光器及其操作方法
公开(公告)号：WO2008105912A3
公开(公告)日：2008-11-06
申请号：PCT/US2007075374
申请日：2007-08-07
申请人： NORTHROP GRUMMAN SPACE & MSN , CHEUNG ERIC C T , RICE ROBERT R , WICKHAM MICHAEL G , WEBER MARK E
发明人： CHEUNG ERIC C T , RICE ROBERT R , WICKHAM MICHAEL G , WEBER MARK E
IPC分类号： H01S3/23 , H01S3/067
CPC分类号： H01S3/2383 , G01J9/00 , H01S3/0085 , H01S3/06754 , H01S3/09415 , H01S3/10015 , H01S3/10053
摘要： A pulsed coherent fiber array laser system that includes a beam generating sub-system (12) that provides a signal pulse beam (14) having pulses of the desired duration that is split into several fiber channels. Optical leakage between the pulses in each split beam is measured and locked to a reference beam (16) by a phase sensing circuit (38) and phase adjusters (28) so that the phase of each fiber pulsed beam is aligned with the phase of the reference beam. A pulse clipper (36) or filter is employed to remove the pulses in the fiber beams so that they do not saturate the phase sensing circuit. The beam generating sub-> system can employ any suitable combination of devices to generate the signal beam and the reference beam, including continuous wave master oscillators, amplitude modulators, frequency shifters, injection seed oscillators, Q-switched lasers, reference oscillators, frequency lockers, wavelength division multiplexers, time gated switches, etc.
摘要翻译：一种脉冲相干光纤阵列激光系统，其包括光束产生子系统（12），其提供具有被分成若干光纤通道的期望持续时间的脉冲的信号脉冲光束（14）。通过相位检测电路（38）和相位调节器（28）测量每个分束中的脉冲之间的光泄漏并将其锁定到参考光束（16），使得每个光纤脉冲光束的相位与参考光束。采用脉冲削波器（36）或滤波器去除光纤中的脉冲，使得它们不会使相位感测电路饱和。光束产生子系统可以采用任何合适的设备组合来产生信号光束和参考光束，包括连续波主振荡器，幅度调制器，移相器，注入种子振荡器，Q开关激光器，参考振荡器，频率储存器，波分复用器，时间选通开关等

8. 发明专利

DE602005011413D1 未知
公开(公告)号：DE602005011413D1
公开(公告)日：2009-01-15
申请号：DE602005011413
申请日：2005-03-04
申请人： NORTHROP GRUMMAN CORP
发明人： RICE ROBERT R , WICKHAM MICHAEL G , KOMINE HIROSHI
IPC分类号： H01S3/23 , B23K26/06 , B23K26/42 , G01J9/02 , H01S3/00 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/13 , H01S3/131
摘要： A hybrid laser source including a solid state laser driven by an array of fiber laser amplifiers, the inputs of which are controllable in phase and polarization, to compensate for distortions that arise in the solid state laser, or to achieve desired output beam properties relating to direction or focus. The output beam is sampled and compared with a reference beam to obtain phase and polarization difference signals across the output beam cross section, at spatial positions corresponding with the positions of the fiber laser amplifiers providing input to the solid state laser. Therefore, phase and polarization properties of the output beam may be independently controlled by predistortion of these properties in the fiber laser amplifier inputs.

9. 发明专利

DE69737228D1 未知
公开(公告)号：DE69737228D1
公开(公告)日：2007-02-22
申请号：DE69737228
申请日：1997-11-14
申请人： NORTHROP GRUMMAN CORP
发明人： WICKHAM MICHAEL G , BROCK JOHN C , WISSEMAN PHILIP H , LEMBO LAWRENCE J
IPC分类号： G01R23/16 , G02B6/34 , H04B10/158 , H04B10/00 , H04B10/12 , H04B10/155 , H04B10/22 , H04J1/00 , H04J14/00 , H04J14/02
摘要： A channelizer for optically channelizing RF signals modulated onto an optical carrier by optically separating the RF signals and mapping the RF signals by way of an optically dispersive element 22, such as a diffraction grating. In an alternate embodiment of the invention, two stages of optical filters elements are provided in series to perform sequential channelization. Bragg reflection gratings 31,33 are used for coarse filtering into predetermined bands while Fabry-Perot filters tuned to specific sub-bands of the Bragg reflection gratings 31, 33 are used for channelization. In alternate embodiments of the invention, a silica planar waveguide and a optical splitting device, such as a Talbot splitter, are used.

10. 发明专利

DE112007002365B4 Verfahren und System zur diffraktiven Kombination von Strahlen durch einen integrierten Strahlformer-und-Probestrahlnehmer 未知
公开(公告)号：DE112007002365B4
公开(公告)日：2015-10-08
申请号：DE112007002365
申请日：2007-09-12
申请人： NORTHROP GRUMMAN CORP
发明人： ROTHENBERG JOSHUA E , RICE ROBERT R , WICKHAM MICHAEL G , KOMINE HIROSHI
IPC分类号： G02B27/10
摘要： Ein System zum Kombinieren einer Mehrzahl von N Lichtstrahlen zu einem einzigen, kohärenten Lichtstrahl, wobei das System versehen ist mit: einer Quelle (11, 13) zum Aussenden einer Mehrzahl von N Lichtstrahlen, welche eine gemeinsame Wellenlänge aufweisen; einer Phasemodulations-Stufe (14) zum Fixieren der Phasen der N Lichtstrahlen mit gemeinsamer Wellenlänge in Abhängigkeit von Phasen-Korrektursignalen; einem diffraktiven optischen Element (25), das die phasenfixierten N Lichtstrahlen mit gemeinsamer Wellenlänge zu einem kohärenten Ausgangs-Strahl (27) kombiniert und einen Niederleistungs-Probe-Teilstrahl (31) von dem kohärenten Ausgangs-Strahl (27) beugt, wobei der Strahlengang-Winkel und die Phase von jedem der N Lichtstrahlen genau so festgelegt ist, dass eine Ausrichtung entlang einer gewählten Beugungsordnungs-Richtung des diffraktiven optischen Elements gewährleistet ist, so dass die Intensität des kombinierten Ausgangs-Strahls des diffraktiven optischen Elements entlang einer einzigen Beugungsordnung maximiert ist; einer Phasen-Detektions-Stufe (35) zum Ermitteln der Phase von jedem der Lichtstrahlen, welche in dem Niederleistungs-Probe-Teilstrahl (31) enthalten sind; und einer Einrichtung (37) zum Ableiten von Korrektursignalen von den ermittelten Phasen.

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