公开(公告)号：US08169692B2

公开(公告)日：2012-05-01

申请号：US12191909

申请日：2008-08-14

申请人： Robert R. Rice ,  Elizabeth Twyford Kunkee ,  Peter Y. M. Livingston

发明人： Robert R. Rice ,  Elizabeth Twyford Kunkee ,  Peter Y. M. Livingston

IPC分类号： G02F1/365 ,  G02F1/39

CPC分类号： G02B6/138 ,  G02B6/1221 ,  G02F1/395 ,  G02F2001/3548 ,  G02F2202/101 ,  G02F2202/20

摘要： A waveguide parametric device including a multi-mode waveguide having orientation layers formed in a propagation direction of a signal beam and a pump beam propagating down the waveguide. The orientation layers are oppositely oriented to provide non-linear coupling between the pump beam and the signal beam and have a periodicity that provides quasi-phase matching for a fundamental propagation mode, where the waveguide has a size to accommodate multi-mode wave propagation.

摘要翻译： 一种波导参数装置，包括具有沿信号光束的传播方向形成的取向层的多模波导和沿波导传播的泵浦光束。 取向层相反地定向以提供泵浦光束和信号光束之间的非线性耦合，并且具有为基本传播模式提供准相位匹配的周期性，其中波导具有适应多模波传播的尺寸。

公开(公告)号：US07580431B2

公开(公告)日：2009-08-25

申请号：US10922925

申请日：2004-08-23

申请人： Michael M. Fitelson ,  Burke E. Nelson ,  Robert R. Rice ,  Sami A. Shakir

发明人： Michael M. Fitelson ,  Burke E. Nelson ,  Robert R. Rice ,  Sami A. Shakir

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。

公开(公告)号：USRE40173E1

公开(公告)日：2008-03-25

申请号：US09498254

申请日：2000-02-03

申请人： Mark S. Zediker ,  Robert R. Rice ,  John M. Haake

发明人： Mark S. Zediker ,  Robert R. Rice ,  John M. Haake

IPC分类号： H01S3/10 ,  H01S3/08

CPC分类号： G02B6/4249 ,  H01S5/4012 ,  H01S5/4025 ,  H01S5/4087

摘要： A direct diode laser system includes N laser head assemblies (LHAs) generating N output beams, N optical fibers receiving respective N output beams and generating N received output beams, and a torch head recollimating and focusing the N received output beams onto a single spot. Preferably, each of the laser head assemblies of the direct diode laser system includes M modules generating M laser beams, wherein each of the M laser beams has a corresponding single wavelength of light. M-1 dichroic filters, wherein each of the M-1 dichroic filter transmits a corresponding one of the M laser beams and reflects all other wavelengths, and a fiber coupling device collecting the M laser beams to produce a respective one of the N output beams. In an exemplary case, the M-1 dichroic filters function as band pass filters. A method of generating a high fluence, high power laser beam is also described.

摘要翻译： 直接二极管激光器系统包括产生N个输出光束的N个激光头组件（LHA），N个光纤接收相应的N个输出光束并产生N个接收的输出光束，以及一个割枪头将N个接收的输出光束重新进行聚焦并聚焦在单个光点上。 优选地，直接二极管激光系统的每个激光头组件包括产生M个激光束的M个模块，其中每个M个激光束具有对应的单个波长的光。 M-1分色滤光器，其中M-1分色滤光片中的每一个传输M个激光束中的相应一个并反射所有其它波长，以及收集M个激光束以产生N个输出光束中的相应一个的光纤耦合装置 。 在示例性情况下，M-1二向色滤光器用作带通滤光器。 还描述了产生高能量，高功率激光束的方法。

公开(公告)号：US07343098B2

公开(公告)日：2008-03-11

申请号：US10738001

申请日：2003-12-17

申请人： David Roderick Gerwe ,  Robert R. Rice ,  Harold B. Schall

发明人： David Roderick Gerwe ,  Robert R. Rice ,  Harold B. Schall

IPC分类号： H04B10/00

CPC分类号： H01Q3/2676 ,  H01S3/06754 ,  H01S3/10053 ,  H01S3/2383

摘要： A fiber optic phased array and control method are provided for controllably adjusting the phase and amplitude of the optical signals emitted by a plurality of fiber optic amplifiers to compensate for atmospheric turbulence. The fiber optic phased array also includes a sensor assembly for detecting: (i) the phase of the optical signals that are emitted by the fiber optic amplifiers, and (ii) both the phase and the amplitude of the optical signals that have been reflected by the target. The fiber optic phased array also includes phase modulators and a gain adjustment mechanism for altering the phase and the amplitude of the optical signals propagating along the fiber optic amplifiers to compensate for modifications in the phase and amplitude that will be introduced by atmospheric turbulence. Among other things, the amplitude control of the optical signals is not adversely effected by intensity nulls in the reflected wavefront.

摘要翻译： 提供了一种光纤相控阵列和控制方法，用于可控地调节由多个光纤放大器发射的光信号的相位和幅度，以补偿大气湍流。 光纤相控阵还包括传感器组件，用于检测：（i）由光纤放大器发射的光信号的相位，以及（ii）光信号的相位和幅度都被 目标。 光纤相位阵列还包括相位调制器和增益调整机构，用于改变沿着光纤放大器传播的光信号的相位和幅度，以补偿由大气湍流引入的相位和幅度的变化。 其中，光信号的幅度控制不受反射波前的强度零点的不利影响。

公开(公告)号：US07046703B2

公开(公告)日：2006-05-16

申请号：US10740965

申请日：2003-12-18

申请人： Robert R. Rice

发明人： Robert R. Rice

IPC分类号： H01S3/00

CPC分类号： H01S3/0903

摘要： Methods and apparatus are provided for modifying a free electron laser (FEL) to produce a non-diverging laser beam. A relativistic electron beam is converted to a Bessel beam in an FEL resonator with conical end mirrors, and the Bessel beam is coupled to the optical field within the laser resonator. The resultant laser beam is propagated with minimal divergence, and is wave corrected at the resonator output to produce a uniform intensity circular beam. The laser beam can be of smaller diameter than that of a conventional resonator due to its diffractionless propagation, which enables the magnetic structure gap within the resonator to be smaller, thus producing a higher optical gain.

摘要翻译： 提供了用于修改自由电子激光器（FEL）以产生非发散激光束的方法和装置。 相对论电子束在具有锥形端镜的FEL谐振器中被转换为贝塞尔束，并且贝塞尔束耦合到激光谐振器内的光场。 所得激光束以最小的发散度传播，并在谐振器输出处进行波校正，以产生均匀强度的圆形光束。 由于其无衍射传播，激光束的直径可以比常规谐振器的直径更小，这使得谐振器内的磁性结构间隙更小，从而产生更高的光学增益。

公开(公告)号：US07016383B2

公开(公告)日：2006-03-21

申请号：US10648265

申请日：2003-08-27

申请人： Robert R. Rice

发明人： Robert R. Rice

IPC分类号： H01S5/24

CPC分类号： H01S5/0243 ,  H01S3/0941 ,  H01S5/02264 ,  H01S5/4025

摘要： A laser diode array is formed on a substrate (310) in which a number of parallel grooves (312) are formed. A metal layer (410) is formed on the grooves (312). Laser diode bars (314) are fitted in alternate grooves, and every other groove is left vacant to serve as a cooling channel (316). The array is immersion cooled in a housing (210). Liquid coolant is circulated through the housing (210) and through a heat exchanger (216). The liquid coolant flows over a major surface of the substrate (310) and through the cooling channels (316). Thus, heat is removed by circulating fluid from three sides of the laser diode bars (314). Such high-performance cooling permits the laser diode array to have a greater power density.

摘要翻译： 激光二极管阵列形成在其上形成有多个平行凹槽（312）的基板（310）上。 在沟槽（312）上形成金属层（410）。 激光二极管棒（314）装配在交替的凹槽中，并且每隔一个凹槽留空以用作冷却通道（316）。 该阵列在壳体（210）中浸没式冷却。 液体冷却剂循环通过壳体（210）并通过热交换器（216）。 液体冷却剂在衬底（310）的主表面上流过冷却通道（316）。 因此，通过从激光二极管条（314）的三个侧面循环流体来除去热量。 这种高性能冷却允许激光二极管阵列具有更大的功率密度。

公开(公告)号：US06943884B2

公开(公告)日：2005-09-13

申请号：US10124532

申请日：2002-04-17

申请人： Robert R. Rice

发明人： Robert R. Rice

IPC分类号： G01N21/39 ,  G01S17/50 ,  G01S17/88 ,  G01N21/61

CPC分类号： G01S17/88 ,  G01N21/39 ,  G01N2021/1793 ,  G01S17/50

摘要： A micro-doppler ladar comprising a tunable laser to identify an unknown constituent of a gaseous cloud or region at a safe distance from the cloud or region. The tunable laser produces a laser beam tunable over a range of different frequencies. Each frequency produces a different vibrational response in the constituent in the gaseous cloud when the cloud or region is illuminated by the laser beam. A micro-doppler ladar system then interprets a back scattered beam to determine the induced vibrations. The determined induced vibrations can then be compared to known vibrations stored in a look-up table to identify the specific constituent(s) in the cloud or region.

摘要翻译： 一种包含可调激光器的微多普勒雷达，用于识别与云或区域安全距离的气云或区域的未知成分。 可调谐激光器产生可在不同频率范围内调节的激光束。 当云或区域被激光束照射时，每个频率在气云中的成分中产生不同的振动响应。 然后，微多普勒拉达系统解释反向散射束以确定诱发的振动。 然后将确定的感应振动与存储在查找表中的已知振动进行比较，以识别云或区域中的特定成分。

公开(公告)号：US06879435B2

公开(公告)日：2005-04-12

申请号：US10090296

申请日：2002-03-04

申请人： Robert R. Rice

发明人： Robert R. Rice

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/00

CPC分类号： H01S3/06754 ,  H01S3/06729 ,  H01S3/094003 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094053

摘要： An optical fiber amplifier has an anisotropic numerical aperture to optimally couple pump energy into the pump core of a dual-clad fiber. The optical fiber consists of a dual-clad fiber having a longitudinally extending inner core, an outer core surrounding the inner core, and a cladding layer at least partially surrounding the outer core. The outer core is capable of transmitting pump energy to thereby amplify signals propagating through the inner core. Further, the outer core is capable of accepting pump energy within a first range of acceptance angles in a first direction and within a second range of acceptance angles in a second direction that is perpendicular to the first direction. The outer core and the cladding layer are structured such that a numerical aperture of the fiber amplifier in the first direction is different than the numerical aperture of the fiber amplifier in the second direction.

摘要翻译： 光纤放大器具有各向异性数值孔径，以将泵浦能量最佳地耦合到双包层光纤的泵芯中。 光纤由具有纵向延伸的内芯，包围内芯的外芯和至少部分地围绕外芯的包层的双包层光纤组成。 外芯能够传输泵浦能量，从而放大通过内芯传播的信号。 此外，外芯能够在垂直于第一方向的第二方向上在第一方向上的接受角度的第一范围内和接受角度的第二范围内接受泵浦能量。 外芯和包覆层被构造为使得光纤放大器在第一方向上的数值孔径不同于光纤放大器在第二方向上的数值孔径。

公开(公告)号：US06776328B2

公开(公告)日：2004-08-17

申请号：US10245016

申请日：2002-09-17

申请人： Robert R. Rice ,  Jan Vetrovec

发明人： Robert R. Rice ,  Jan Vetrovec

IPC分类号： B23K2012

CPC分类号： B23K20/1235 ,  B23K20/1245

摘要： There are provided an apparatus and method for friction welding structural members. The apparatus includes a connected shank and probe. The probe defines an absorption surface and a cavity extending thereto. The absorption surface is configured to receive electromagnetic radiation from an electromagnetic radiation source such as a light source or RF generator. The radiation heats the probe, supplementing the heat generated by friction between the probe and the structural members, and thereby increasing the speed at which the probe can be used to frictionally weld the structural materials.

摘要翻译： 提供了用于摩擦焊接结构构件的装置和方法。 该装置包括连接的柄和探针。 探针限定吸收表面和延伸到其上的空腔。 吸收表面被配置为接收来自诸如光源或RF发生器的电磁辐射源的电磁辐射。 辐射加热探头，补充探头和结构构件之间的摩擦所产生的热量，从而提高探头可用于摩擦焊接结构材料的速度。

公开(公告)号：US06686077B2

公开(公告)日：2004-02-03

申请号：US09989540

申请日：2001-11-21

申请人： Robert R. Rice ,  Jan Vetrovec

发明人： Robert R. Rice ,  Jan Vetrovec

IPC分类号： H01M800

CPC分类号： H01M8/2455 ,  H01M8/1004 ,  H01M8/1009 ,  H01M8/1016

摘要： A fuel cell device for generation of electricity from a polar oxidizer liquid and a non-polar fuel fluid includes a cathode in contact with the polar oxidizer liquid; an anode in contact with the non-polar fuel fluid; and a separator for separating the polar oxidizer liquid from the non-polar fuel fluid. The separator is made from material that is lyophobic with respect to the oxidizer liquid, and has a plurality of apertures, which are appropriately sized and spaced to form a meniscus in each aperture. The meniscus forms a liquid heterointerface between the conductive polar oxidizer liquid and the non-polar fuel fluid providing a controlled contact surface for oxidation processes. The fuel side of the separator may be coated with a conductive material to form the anode, in electric contact with the perimeter of the meniscus, and the cathode may be formed on the oxidizer side of the separator.

摘要翻译： 用于从极性氧化剂液体和非极性燃料流体产生电力的燃料电池装置包括与极性氧化剂液体接触的阴极; 与非极性燃料流体接触的阳极; 以及用于将极性氧化剂液体与非极性燃料流体分离的分离器。 分离器由相对于氧化剂液体疏液的材料制成，并且具有多个孔，其适当尺寸和间隔以在每个孔中形成弯液面。 弯液面在导电极性氧化剂液体和非极性燃料流体之间形成液体异质界面，提供用于氧化过程的受控接触表面。 分隔器的燃料侧可以用导电材料涂覆以形成阳极，与弯液面的周边电接触，并且阴极可以形成在隔板的氧化剂侧上。