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    High efficiency, high power direct diode laser systems and methods therefor
    1.
    再颁专利
    High efficiency, high power direct diode laser systems and methods therefor 有权
    高效率，高功率直接二极管激光系统及其方法

    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。

    High efficiency, high power direct diode laser systems and methods therefor
    2.
    发明授权
    High efficiency, high power direct diode laser systems and methods therefor 失效
    高效率，高功率直接二极管激光系统及其方法

    公开(公告)号：US5715270A

    公开(公告)日：1998-02-03

    申请号：US722619

    申请日：1996-09-27

    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： H01S3/06 ,  G02B6/42 ,  H01S5/026 ,  H01S5/40 ,  H01S3/091 ,  G02B6/28 ,  H01S3/00

    CPC分类号： G02B6/4249 ,  H01S5/4025 ,  H01S5/4012 ,  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M个激光束中的每一个具有相应的单波长光，M-1个二向色滤光器，其中M-1 二向色滤光器传输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。

    Fiber optic micro-doppler ladar system and operating method therefor
    6.
    发明授权
    Fiber optic micro-doppler ladar system and operating method therefor 失效
    光纤微多普勒系统及其操作方法

    公开(公告)号：US5847816A

    公开(公告)日：1998-12-08

    申请号：US782175

    申请日：1997-01-14

    申请人： Mark S. Zediker ,  Robert R. Rice ,  Wil S. Otaguro

    发明人： Mark S. Zediker ,  Robert R. Rice ,  Wil S. Otaguro

    IPC分类号： G01P3/36 ,  G01P5/26 ,  G01S7/48 ,  G01S7/481 ,  G01S7/493 ,  G01S17/50 ,  G01C3/08

    CPC分类号： G01S7/4818 ,  G01P3/36 ,  G01P5/26 ,  G01S17/50 ,  G01S7/4802 ,  G01S7/4815 ,  G01S7/4917 ,  G01S7/493

    摘要： A micro-doppler ladar system for identifying and analyzing a target of interest includes a transmitter and coherent receiver pair, each of which includes a fiber optic power amplifier, and a controller. Preferably, the transmitter includes a master oscillator for generating a primary laser beam, a voltage controlled oscillator (VCO) for generating a VCO signal having a predetermined, repetitive frequency pattern, a frequency shifting circuit for varying the frequency of the primary laser beam responsive to the VCO signal to thereby produce a frequency-varying primary laser signal, and the optical fiber amplifier, which amplifies the frequency-varying primary laser signal to thereby produce a transmit laser beam. In addition, the coherent receiver, which responds to backscattered light produced by the interaction of the transmit laser beam with the target of interest, includes an optical fiber pre-amplifier for amplifying the backscattered light to thereby produce an amplified return laser beam, and a phase locked loop receiving the primary laser beam and the amplified return laser beam for generating an electrical signal indicative of range, velocity and a characteristic signature of the target of interest. The transmitter and coherent receiver can be operated in a target acquisition mode of operation for determining range and velocity, and a signature acquisition mode of operation for determining a characteristic signature of the target of interest responsive to the electrical signal. A method for operating the micro-doppler ladar system is also described.

    摘要翻译： 用于识别和分析感兴趣的目标的微多普勒载入系统包括发射机和相干接收机对，每个发射机和相干接收机对都包括光纤功率放大器和控制器。 优选地，发射机包括用于产生主激光束的主振荡器，用于产生具有预定的重复频率模式的VCO信号的压控振荡器（VCO），用于改变主激光束的频率的频移电路， VCO信号，从而产生频率变化的初级激光信号，以及光纤放大器，其放大频率变化的初级激光信号从而产生发射激光束。 此外，响应于由发射激光束与感兴趣的目标物的相互作用而产生的反向散射光的相干接收器包括用于放大后向散射光从而产生放大的返回激光束的光纤预放大器，以及 接收主激光束的锁相环和放大的返回激光束，用于产生指示感兴趣目标的范围，速度和特征签名的电信号。 发射器和相干接收器可以在用于确定范围和速度的目标获取操作模式中操作，以及用于根据电信号确定感兴趣的目标的特征签名的签名获取操作模式。 还描述了用于操作微多普勒系统的方法。

    Phased array Raman laser amplifier and operating method therefor
    7.
    发明授权
    Phased array Raman laser amplifier and operating method therefor 失效
    相控阵拉曼激光放大器及其操作方法

    公开(公告)号：US5832006A

    公开(公告)日：1998-11-03

    申请号：US800296

    申请日：1997-02-13

    申请人： Robert R. Rice ,  Mark S. Zediker

    发明人： Robert R. Rice ,  Mark S. Zediker

    IPC分类号： A61N5/06 ,  H01S3/23 ,  H01S3/30

    CPC分类号： A61N5/062 ,  H01S3/30 ,  A61N2005/0644 ,  H01S3/2383

    摘要： A phased array Raman laser amplifier includes a beam generator for generating a fundamental laser beam and a Raman seed frequency laser beam, and a fiber optic laser amplifier array for forming a diffraction limited output laser beam at the Raman seed frequency by amplifying the fundamental laser beam to a power level corresponding to the Stimulated Raman Scattering (SRS) threshold to thereby pump the SRS process and provide Raman gain to the Raman seed frequency laser beam. The fiber optic laser amplifier includes a beam splitter receiving the fundamental laser beam and the Raman seed frequency laser beam and generating N secondary fundamental and N Raman seed frequency laser beams, N parallel rare earth doped optical fiber sections, each of the optical fiber sections amplifying a respective one of the N secondary fundamental laser beams to thereby produce N tertiary laser beams at the power level corresponding to the Stimulated Raman Scattering (SRS) threshold to thereby pump the SRS process and provide Raman gain to the N Raman seed frequency laser beams to thereby produce N amplified Raman seed frequency laser beams, and an optical combiner for receiving at least the N Raman seed frequency laser beams and for generating the diffraction limited output laser beam at the Raman seed frequency. Preferably, N is an integer greater than or equal to 2. A method for operating the phased array Raman laser amplifier is also described.

    摘要翻译： 相控阵拉曼激光放大器包括用于产生基本激光束和拉曼种子频率激光束的光束发生器，以及用于通过放大基本激光束形成拉曼种子频率的衍射限制输出激光束的光纤激光放大器阵列 达到与受激拉曼散射（SRS）阈值相对应的功率电平，从而泵浦SRS处理并向拉曼种子频率激光束提供拉曼增益。 光纤激光放大器包括分光器，其接收基本激光束和拉曼种子频率激光束，并产生N个次级基波和N拉曼种子频率激光束，N个平行稀土掺杂光纤部分，每个光纤部分放大 N个次级基本激光束中的相应一个，从而在与激励拉曼散射（SRS）阈值相对应的功率电平下产生N个第三激光束，从而泵浦SRS处理，并向N个拉曼种子频率激光束提供拉曼增益 从而产生N个放大的拉曼种子频率激光束，以及用于接收至少N个拉曼种子频率激光束并用于以拉曼种子频率产生衍射限制输出激光束的光合成器。 优选地，N是大于或等于2的整数。还描述了用于操作相控阵拉曼激光放大器的方法。

    Method for extending range and sensitivity of a fiber optic micro-doppler ladar system and apparatus therefor
    9.
    发明授权
    Method for extending range and sensitivity of a fiber optic micro-doppler ladar system and apparatus therefor 失效
    用于延长光纤微多普勒系统的范围和灵敏度的方法及其装置

    公开(公告)号：US5847817A

    公开(公告)日：1998-12-08

    申请号：US783009

    申请日：1997-01-14

    申请人： Mark S. Zediker ,  Robert R. Rice ,  Jack H. Hollister

    发明人： Mark S. Zediker ,  Robert R. Rice ,  Jack H. Hollister

    IPC分类号： G01S7/493 ,  G01S17/32 ,  G01S17/58 ,  H01S3/00

    CPC分类号： G01S17/58 ,  G01S17/32 ,  G01S7/4911 ,  G01S7/4917 ,  G01S7/493 ,  G01S7/497

    摘要： A method for compensating a reference signal used in a coherent receiver of a micro-doppler sensor having a transmitter includes the steps for: (a) repeatedly measuring phase differences between a signal emitted by the transmitter a first time and a previous signal emitted at a previous time so as to produce a plurality of phase error signals; (b) accumulating the phase error signals over a propagation time between the transmitter and the coherent receiver so as to produce a cumulative phase error signal; and (c) modulating a signal produced by the transmitter at the end of the propagation period so as to generate a compensated reference signal having a phase characteristic substantially identical to the signal produced by the transmitter at the beginning of the propagation period. A phase error or noise compensator, which can form part of a micro-doppler ladar system, is also described.

    摘要翻译： 一种用于补偿在具有发射机的微多普勒传感器的相干接收机中使用的参考信号的方法，包括以下步骤：（a）重复地测量由发射机发射的信号第一次与先前发射的信号之间的相位差 以产生多个相位误差信号; （b）在发射机和相干接收机之间的传播时间累积相位误差信号，以产生累积相位误差信号; 以及（c）在传播周期结束时调制由发射机产生的信号，以产生具有与传播周期开始时由发射机产生的信号基本相同的相位特性的补偿参考信号。 还描述了可以形成微多普勒系统的一部分的相位误差或噪声补偿器。

    Fiber optic laser system and associated lasing method
    10.
    发明授权
    Fiber optic laser system and associated lasing method 失效
    光纤激光系统及相关激光光源

    公开(公告)号：US5694408A

    公开(公告)日：1997-12-02

    申请号：US611474

    申请日：1996-03-05

    申请人： Eric H. Bott ,  Robert R. Rice ,  Mark S. Zediker

    发明人： Eric H. Bott ,  Robert R. Rice ,  Mark S. Zediker

    IPC分类号： G02B27/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/23 ,  H01S3/30

    CPC分类号： H01S3/2383 ,  G02F2203/18 ,  H01S3/067 ,  H01S3/06754

    摘要： The fiber optic laser system and associated lasing method amplifies and divides a primary laser signal into a plurality of secondary laser signals. The fiber optic laser system includes a distribution means, such as a distribution module, for dividing a primary laser signal, generated by a master oscillator into a number of secondary laser signals. The distribution module can include amplification means, such as an optical fiber amplifier, for amplifying the primary laser signal and a signal power splitter for dividing the amplified primary laser signal into a number of secondary laser signals. The secondary laser signals can then be further amplified, such as by a power amplification module including another optical fiber amplifier. The secondary laser signals can be recombined to produce a laser output having a power level greater than the predetermined power level of the primary laser signal. During the process of combining the secondary laser signals, the secondary laser signals can be collimated and the relative phases of the secondary laser signals can be controllably modulated such that the resulting laser output has a predetermined phase profile and relatively high beam qualities.

    摘要翻译： 光纤激光系统和相关联的激光方法将主激光信号放大并分割成多个次级激光信号。 光纤激光系统包括分配装置，例如分配模块，用于将由主振荡器产生的初级激光信号分成多个次级激光信号。 分配模块可以包括用于放大初级激光信号的放大装置，例如光纤放大器，以及用于将放大的主激光信号分成多个次级激光信号的信号功率分配器。 然后可以例如通过包括另一光纤放大器的功率放大模块来进一步放大次级激光信号。 次级激光信号可以被重新组合以产生具有大于主激光信号的预定功率电平的功率电平的激光输出。 在组合次级激光信号的过程中，辅助激光信号可以被准直，并且次级激光信号的相对相位可以被可控地调制，使得所得到的激光输出具有预定的相位轮廓和相对较高的光束质量。