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1. 发明授权

US06243515B1 Apparatus for optically pumping an optical fiber from the side 有权
标题翻译：从侧面光纤泵浦光纤的装置
公开(公告)号：US06243515B1
公开(公告)日：2001-06-05
申请号：US09336656
申请日：1999-06-18
申请人： Donald G. Heflinger , Michael G. Wickham , Gerald W. Holleman
发明人： Donald G. Heflinger , Michael G. Wickham , Gerald W. Holleman
IPC分类号： G02B634
CPC分类号： G02B6/4214 , G02B6/02061 , G02B6/02066 , G02B6/02071 , G02B6/2852 , G02B6/34 , H01S3/06754 , H01S3/094003 , H01S3/094019
摘要： An apparatus for optically pumping an optical fiber from the side comprising a laser for supplying a beam of pump light, and an optical fiber having a longitudinal surface disposed to the beam, a grating formed in the flat surface for diffracting the beam at a predetermined angle, and an outer clad layer proximate the grating and so as to establish at least one propagating mode characterized by an angle, the predetermined angle being matched to such angle.
摘要翻译：一种用于从包括用于提供泵浦光束的激光器的侧面光学泵浦光纤的装置，以及具有设置在所述光束的纵向表面的光纤，形成在所述平坦表面中的用于以预定角度衍射所述光束的光栅以及靠近光栅的外包层，并且建立至少一个以角度为特征的传播模式，该预定角度与该角度匹配。

2. 发明授权

US06301421B1 Photonic crystal fiber lasers and amplifiers for high power 有权
标题翻译：光子晶体光纤激光器和功率放大器
公开(公告)号：US06301421B1
公开(公告)日：2001-10-09
申请号：US09318554
申请日：1999-05-27
申请人： Michael G. Wickham , Gerald W. Holleman , Stephen J. Brosnan
发明人： Michael G. Wickham , Gerald W. Holleman , Stephen J. Brosnan
IPC分类号： H01S3067
CPC分类号： G02B6/02338 , G02B6/02333 , G02B6/02347 , H01S3/06708 , H01S3/0672 , H01S3/06754 , H01S3/094003 , H01S3/1603
摘要： A photonic crystal fiber (10, 110) is provided for a laser/amplifier system including a guiding structure comprising a geometric array of axial passages (20, 120) formed along the length of the fiber (10, 110). More particularly, the guiding structure includes a central silica rod (14, 114) which is doped with a rare earth element for providing optical gain to the laser/amplifier. A plurality of second silica rods (16, 116) are disposed circumferentially about the central rod (14, 114). Each of the second rods (16, 116) includes an axial passage (20, 120) formed therethrough along the length of the fiber (10, 110). A reflective coating (22, 122) is deposited on an outboard surface of the array of rods (12, 112) to confine pumped light (30, 130) therein. The pumped light (30, 130) may be injected into the fiber (10, 110) from the side by focusing it through small holes (24) in the reflective coating (22) or by reflecting it off transverse Bragg gratings (56) written into a fiber pigtail (50) coupled to the fiber (110). The mode field diameter of the fiber (10, 110) is controlled by properly selecting the diameter and spacing of the passages (20, 120) in the second rods (16, 116).
摘要翻译：提供了一种用于激光/放大器系统的光子晶体光纤（10,110），其包括导引结构，所述引导结构包括沿着光纤（10,110）的长度形成的轴向通道（20,120）的几何阵列。更具体地，引导结构包括掺杂有用于向激光器/放大器提供光学增益的稀土元素的中心石英棒（14,114）。多个第二硅石棒（16,116）围绕中心杆（14,114）周向设置。每个第二杆（16,116）包括沿纤维（10,110）的长度穿过其形成的轴向通道（20,120）。反射涂层（22,122）沉积在棒阵列（12,112）的外侧表面上，以将泵浦光（30,130）限制在其中。泵浦光（30,130）可以从侧面通过将其聚焦在反射涂层（22）中的小孔（24）中或通过将其写入横向布拉格光栅（56）而从侧面注入到光纤（10,110）中耦合到光纤（110）的光纤引线（50）。通过适当地选择第二杆（16,116）中的通道（20,120）的直径和间距来控制纤维（10,110）的模场直径。

3. 发明授权

US08254017B2 Optical fiber amplifier and methods of making the same 有权
标题翻译：光纤放大器及其制作方法
公开(公告)号：US08254017B2
公开(公告)日：2012-08-28
申请号：US12407470
申请日：2009-03-19
申请人： Robert R. Rice , Michael G. Wickham , Hiroshi Komine , Peter Livingston , Peter Thielen , Charles Phillip Asman
发明人： Robert R. Rice , Michael G. Wickham , Hiroshi Komine , Peter Livingston , Peter Thielen , Charles Phillip Asman
IPC分类号： C03B37/016 , C03B37/075 , H04B10/17
CPC分类号： H01S3/06716 , C03B37/01211 , C03B37/01413 , C03B37/016 , C03B37/02763 , C03B2201/08 , C03B2201/28 , C03B2201/31 , C03B2201/32 , C03B2201/42 , C03B2203/18 , G02B6/028 , H01S3/0672 , H01S3/06729 , H01S3/09415 , H01S2301/03
摘要： A method is provided for forming an optical fiber amplifier. The method comprises providing a composite preform having a gain material core that includes one or more acoustic velocity varying dopants to provide a longitudinally varying acoustic velocity profile along the gain material core to suppress Stimulated Brillouin Scattering (SBS) effects by raising the SBS threshold and drawing the composite preform to form the optical fiber amplifier.
摘要翻译：提供一种用于形成光纤放大器的方法。该方法包括提供具有增益材料芯的复合预制件，增益材料芯包括一个或多个声速变化掺杂剂，以沿着增益材料芯提供纵向变化的声速分布，以通过提高SBS阈值和绘制来抑制受激布里渊散射（SBS）效应复合预成型件形成光纤放大器。

4. 发明申请

US20080084598A1 Method and system for coherent beam combining using an integrated diffractive beam combiner and sampler 有权
$Method and system for coherent beam combining using an integrated diffractive beam combiner and sampler$
标题翻译：使用集成衍射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：US20080084598A1
公开(公告)日：2008-04-10
申请号：US11543677
申请日：2006-10-05
申请人： Joshua E. Rothenberg , Robert R. Rice , Michael G. Wickham , Hiroshi Komine
发明人： Joshua E. Rothenberg , Robert R. Rice , Michael G. Wickham , Hiroshi Komine
IPC分类号： G02F1/01
CPC分类号： H01S3/2383 , B23K26/0604 , B23K26/0613 , H01S3/06754 , H01S3/10007
摘要： A system and method for combining plural low power light beams into a coherent high power light beam by means of a diffractive optical element operating as both a beam combiner and beam sampler. 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 through a fiber array to the diffractive optical element to allow efficient coherent combination of the beams at a desired diffraction order. The diffractive optical element includes a periodic sampling grating for diffracting a low power sample beam representative of the combined beam. 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. The diffractive optical element may be further modified to collimate beams diverging from the fiber array and to focus the sample beam onto a phase detector.
摘要翻译：一种通过用作光束组合器和光束取样器的衍射光学元件将多个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。光束通过光纤阵列引导到衍射光学元件，以允许以期望的衍射级别的光束的有效相干组合。衍射光学元件包括用于衍射代表组合光束的低功率采样光束的周期性采样光栅。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。可以进一步修改衍射光学元件以准直从光纤阵列发散的光束并将样品光束聚焦到相位检测器上。

5. 发明授权

US07468832B2 Method and system for coherent beam combining using an integrated diffractive beam combiner and sampler 有权
$Method and system for coherent beam combining using an integrated diffractive beam combiner and sampler$
公开(公告)号：US07468832B2
公开(公告)日：2008-12-23
申请号：US11543677
申请日：2006-10-05
申请人： Joshua E. Rothenberg , Robert R. Rice , Michael G. Wickham , Hiroshi Komine
发明人： Joshua E. Rothenberg , Robert R. Rice , Michael G. Wickham , Hiroshi Komine
IPC分类号： H04B10/17 , G01B9/00
CPC分类号： H01S3/2383 , B23K26/0604 , B23K26/0613 , H01S3/06754 , H01S3/10007
摘要： A system and method for combining plural low power light beams into a coherent high power light beam by means of a diffractive optical element operating as both a beam combiner and beam sampler. 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 through a fiber array to the diffractive optical element to allow efficient coherent combination of the beams at a desired diffraction order. The diffractive optical element includes a periodic sampling grating for diffracting a low power sample beam representative of the combined beam. 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. The diffractive optical element may be further modified to collimate beams diverging from the fiber array and to focus the sample beam onto a phase detector.

6. 发明授权

US07339727B1 Method and system for diffractive beam combining using DOE combiner with passive phase control 有权
$Method and system for diffractive beam combining using DOE combiner with passive phase control$
标题翻译：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
申请人： Joshua E. Rothenberg , Robert R. Rice , Sami A. Shakir , Michael G. Wickham
发明人： Joshua E. Rothenberg , Robert R. Rice , Sami A. Shakir , Michael G. Wickham
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。

7. 发明授权

US06678294B1 Distributed feedback laser apparatus for avoiding stimulated brillouin scattering 有权
标题翻译：用于避免受激布里渊散射的分布式反馈激光装置
公开(公告)号：US06678294B1
公开(公告)日：2004-01-13
申请号：US09707219
申请日：2000-11-06
申请人： Hiroshi Komine , Stephen J. Brosnan , Michael G. Wickham
发明人： Hiroshi Komine , Stephen J. Brosnan , Michael G. Wickham
IPC分类号： H01S313
CPC分类号： H01S3/2383 , H01S3/06754 , H01S3/1307 , H01S5/0622 , H01S2301/03
摘要： A seed laser apparatus is disclosed. It comprises a distributed feedback laser system for transmitting a dithered optical signal having a frequency versus time characteristic that is represented by a triangular waveform and an optical medium including a plurality of optical signal paths, each path including an optical fiber and a fiber amplifier. The optical medium is characterized by stimulated Brillouin scattering (SBS) having a response time, whereby the period of the triangular waveform is equal to the round-trip transit time in the fiber or shorter than the response time of the SBS.
摘要翻译：公开了种子激光装置。它包括分布反馈激光系统，用于发送具有由三角波形表示的频率对时间特性的抖动光信号和包括多个光信号路径的光学介质，每个路径包括光纤和光纤放大器。光学介质的特征在于具有响应时间的受激布里渊散射（SBS），由此三角波形的周期等于光纤中的往返传播时间或短于SBS的响应时间。

8. 发明授权

US06396801B1 Arbitrary waveform modem 失效
标题翻译：任意波形调制解调器
公开(公告)号：US06396801B1
公开(公告)日：2002-05-28
申请号：US09120851
申请日：1998-07-22
申请人： Eric L. Upton , Michael G. Wickham
发明人： Eric L. Upton , Michael G. Wickham
IPC分类号： H04B1004
CPC分类号： H04J14/005 , H04J14/007
摘要： An improved communication system which provides improved spectral efficiency as well as relatively low co-channel interference modulation characteristics relative to known communication systems. In particular, the communication system includes a modem that includes an arbitrary or chaotic waveform generator and a chaotic waveform demodulator configured as a sliding window correlator that is adapted to modulate and demodulate an arbitrary or chaotic waveforms. The modulator includes a finite impulse response (FIR) filter, for example, formed from tapped delay lines with unequal time delays. The demodulator is formed as a matched filter for recovery of the input data signals. The modem is adapted to transmit either optical or RF waveforms. In order to prevent drift of the tap weights due to temperature drift of the tapped delay lines and other factors, a closed servo loop may be provided for each tap weight. By maintaining the accuracy of the tap weights, the system in accordance with the present invention is adapted to provide arbitrary or chaotic modulation and demodulation of the input data signal thereby providing increased spectral efficiency and improved performance which provides increased data output relative to known communication systems based on modulation of periodic signals while minimizing auto correlation errors.
摘要翻译：一种改进的通信系统，其相对于已知的通信系统提供改进的频谱效率以及相对低的同信道干扰调制特性。特别地，通信系统包括调制解调器，其包括任意或混沌波形发生器和被配置为适于调制和解调任意或混沌波形的滑动窗口相关器的混沌波形解调器。调制器包括例如由具有不等时间延迟的抽头延迟线形成的有限脉冲响应（FIR）滤波器。解调器形成为用于恢复输入数据信号的匹配滤波器。调制解调器适用于传输光或RF波形。为了防止由于抽头延迟线的温度漂移引起的抽头重量的漂移和其他因素，可以为每个抽头重量提供封闭的伺服回路。通过保持抽头权重的精度，根据本发明的系统适于提供输入数据信号的任意或混沌调制和解调，从而提供增加的频谱效率和改进的性能，其相对于已知的通信系统提供增加的数据输出基于周期信号的调制，同时最小化自相关误差。

9. 发明授权

US07120175B2 Scalable harmonic laser source and method 有权
标题翻译：可扩展谐波激光源和方法
公开(公告)号：US07120175B2
公开(公告)日：2006-10-10
申请号：US10761747
申请日：2004-01-20
申请人： Joshua E. Rothenberg , Eric C. T. Cheung , Hiroshi Komine , Robert R. Rice , Michael G. Wickham
发明人： Joshua E. Rothenberg , Eric C. T. Cheung , Hiroshi Komine , Robert R. Rice , Michael G. Wickham
IPC分类号： H01S3/10
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，但其中输出波长可选择在可见光或紫外区域的激光阵列结构可以扩展到非常高的功率，而不受光纤材料选择中通常固有的波长的限制。基频的泵浦信号在光纤放大器阵列中被放大并输入到作为谐波发生器的非线性晶体阵列，产生基频的期望谐波的输出阵列。相位检测和校正系统维持相位一致性的输出阵列，从而产生具有所需频率的高光束质量的高功率输出。非线性晶体阵列可以是单个阵列以产生二次谐波输出频率，或者被配置为产生选定的较高次谐波频率的多个级联阵列的组合。

10. 发明授权

US06366598B1 High power single mode semiconductor lasers and optical amplifiers using 2D Bragg gratings 有权
标题翻译：大功率单模半导体激光器和使用2D布拉格光栅的光放大器
公开(公告)号：US06366598B1
公开(公告)日：2002-04-02
申请号：US09247402
申请日：1999-02-10
申请人： Doyle T. Nichols , Srinath Kalluri , Michael G. Wickham , Timothy A. Vang , Michael P. Nesnidal , Robert W. Lodenkamper
发明人： Doyle T. Nichols , Srinath Kalluri , Michael G. Wickham , Timothy A. Vang , Michael P. Nesnidal , Robert W. Lodenkamper
IPC分类号： H01S5125
CPC分类号： H01S5/12 , H01S5/0655 , H01S5/105 , H01S5/1078 , H01S5/20
摘要： A waveguide (10) is provided having a two-dimensional optical wavelength Bragg grating (20) embedded within a semiconductor laser medium (16). More particularly, the waveguide (10) includes an active region (16) sandwiched between n-doped and p-doped cladding layers (14, 22). The two-dimensional Bragg grating (20) is formed in the active region (16). Upper and lower electrodes (24, 26) are defined on opposite sides of the cladding layers (14, 22) to complete the waveguide structure (10). The two-dimensional grating (20) provides simultaneous frequency selective feedback for mode control in both the longitudinal and lateral directions.
摘要翻译：提供了具有嵌入在半导体激光介质（16）内的二维光波长布拉格光栅（20）的波导（10）。更具体地，波导（10）包括夹在n掺杂和p掺杂包覆层（14,22）之间的有源区（16）。二维布拉格光栅（20）形成在有源区（16）中。上电极和下电极（24,26）限定在包覆层（14,22）的相对侧上，以完成波导结构（10）。二维光栅（20）在纵向和横向都提供用于模式控制的同时频率选择反馈。

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