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    Pre-amplifier for detection lasers within laser ultrasonic inspection systems
    5.
    发明授权
    Pre-amplifier for detection lasers within laser ultrasonic inspection systems 有权
    激光超声波检测系统中检测激光器的前置放大器

    公开(公告)号：US07916307B2

    公开(公告)日：2011-03-29

    申请号：US11688379

    申请日：2007-03-20

    申请人： Marc Dubois ,  Thomas E. Drake, Jr. ,  Kenneth R. Yawn

    发明人： Marc Dubois ,  Thomas E. Drake, Jr. ,  Kenneth R. Yawn

    IPC分类号： H01S3/13 ,  G01B11/02 ,  H01P7/00

    CPC分类号： G01H9/008 ,  G01N21/1702 ,  G01N29/2418 ,  G01N2021/1706 ,  G01N2291/0231

    摘要： A pulse detection laser is provided. The pulse detection laser includes a single frequency oscillator, a continuous pre-amplifier, and a pulsed amplifier. The single frequency oscillator generates a seed laser beam and is optically coupled to the continuous preamplifier. The continuous pre-amplifier amplifies the seed laser to produce an intermediate power laser beam. A pulsed amplifier optically coupled to the continuous pre-amplifier receives the intermediate power laser beam and amplifies the intermediate power laser beam to produce a pulse detection laser beam. One task of this pulse detection laser is to illuminate ultrasonic displacements. Light from the laser is scattered, collected, and analyzed with an interferometer to demodulate the ultrasonic displacements caused by the return echoes of the ultrasound at the surface of the part.

    摘要翻译： 提供脉冲检测激光器。 脉冲检测激光器包括单频振荡器，连续前置放大器和脉冲放大器。 单频振荡器产生种子激光束并且光连接到连续前置放大器。 连续的前置放大器放大种子激光器以产生中间功率激光束。 光耦合到连续前置放大器的脉冲放大器接收中间功率激光束并放大中间功率激光束以产生脉冲检测激光束。 该脉冲检测激光器的一个任务是照亮超声波位移。 来自激光的光被散射，收集并用干涉仪分析，以解调超声波在部件表面的返回回波引起的超声位移。

    Fiber-based mid-infrared generation laser for laser ultrasound inspection
    6.
    发明授权
    Fiber-based mid-infrared generation laser for laser ultrasound inspection 有权
    用于激光超声波检测的基于光纤的中红外发生激光

    公开(公告)号：US07800762B2

    公开(公告)日：2010-09-21

    申请号：US11524046

    申请日：2006-09-20

    申请人： John B. Deaton, Jr. ,  Marc Dubois ,  Kenneth R. Yawn ,  Jeffery E. Maestas ,  Thomas E. Drake, Jr.

    发明人： John B. Deaton, Jr. ,  Marc Dubois ,  Kenneth R. Yawn ,  Jeffery E. Maestas ,  Thomas E. Drake, Jr.

    IPC分类号： G01B11/02

    CPC分类号： G01N29/2418 ,  G01N2291/0231

    摘要： Embodiments of the present invention relate to a laser system and method for the optical generation of ultrasound at a remote target. This involves generating a pump laser beam with a diode-pumped fiber laser. The diode pumped fiber laser is fiber-coupled with an optical fiber, either passive or diode pumped, to a generation laser head. The generation laser head generates a generation laser beam from the pump laser beam and directs the generation laser beam to the surface of the remote target. The interaction between generation laser beam and the surface of the remote target results in ultrasonic displacements at the remote target. These ultrasonic displacements may be sampled in order to assess and inspect the remote target.

    摘要翻译： 本发明的实施例涉及一种用于在远程目标处产生超声波的激光系统和方法。 这涉及用二极管泵浦的光纤激光器产生泵浦激光束。 二极管泵浦光纤激光器与被泵浦或无源二极管的光纤耦合到一代激光头。 一代激光头从泵浦激光束产生一代激光束并将生成的激光束引导到远程靶的表面。 发射激光束和远程目标表面之间的相互作用导致远程目标的超声波位移。 可以对这些超声波位移进行采样，以评估和检查远程目标。

    Fiber-based mid-infrared generation laser for laser ultrasound inspection
    7.
    发明申请
    Fiber-based mid-infrared generation laser for laser ultrasound inspection 有权
    用于激光超声波检测的基于光纤的中红外发生激光

    公开(公告)号：US20080291963A1

    公开(公告)日：2008-11-27

    申请号：US11524046

    申请日：2006-09-20

    申请人： John B. Deaton, JR. ,  Marc Dubois ,  Kenneth R. Yawn ,  Jeffery E. Maestas ,  Thomas E. Drake, JR.

    发明人： John B. Deaton, JR. ,  Marc Dubois ,  Kenneth R. Yawn ,  Jeffery E. Maestas ,  Thomas E. Drake, JR.

    IPC分类号： H01S3/09

    CPC分类号： G01N29/2418 ,  G01N2291/0231

    摘要： Embodiments of the present invention relate to a laser system and method for the optical generation of ultrasound at a remote target. This involves generating a pump laser beam with a diode-pumped fiber laser. The diode pumped fiber laser is fiber-coupled with an optical fiber, either passive or diode pumped, to a generation laser head. The generation laser head generates a generation laser beam from the pump laser beam and directs the generation laser beam to the surface of the remote target. The interaction between generation laser beam and the surface of the remote target results in ultrasonic displacements at the remote target. These ultrasonic displacements may be sampled in order to assess and inspect the remote target.

    摘要翻译： 本发明的实施例涉及一种用于在远程目标处产生超声波的激光系统和方法。 这涉及用二极管泵浦的光纤激光器产生泵浦激光束。 二极管泵浦光纤激光器与被泵浦或无源二极管的光纤耦合到一代激光头。 一代激光头从泵浦激光束产生一代激光束并将生成的激光束引导到远程靶的表面。 发射激光束和远程目标表面之间的相互作用导致远程目标的超声波位移。 可以对这些超声波位移进行采样，以评估和检查远程目标。

    Hollow core waveguide for laser generation of ultrasonic waves
    9.
    发明授权
    Hollow core waveguide for laser generation of ultrasonic waves 有权
    用于激光产生超声波的空心波导

    公开(公告)号：US07734133B2

    公开(公告)日：2010-06-08

    申请号：US12121559

    申请日：2008-05-15

    申请人： Marc Dubois ,  Thomas E. Drake, Jr. ,  Mark A. Osterkamp

    发明人： Marc Dubois ,  Thomas E. Drake, Jr. ,  Mark A. Osterkamp

    IPC分类号： G02B6/26 ,  G02B6/42 ,  G02B6/32 ,  G01N9/24 ,  G01N29/00 ,  G01H11/00 ,  G01N24/00 ,  G01N29/04

    CPC分类号： G02B6/4206 ,  B23K26/03 ,  B23K26/06 ,  B23K26/0884 ,  G01N29/2418 ,  G01N29/265

    摘要： A laser transmission system is used for inspecting workpieces. The system has a source of laser beams that is coupled to a first lens assembly. A first hollow core waveguide is operably coupled to the first lens assembly. An end of an optical fiber coupled to the first hollow core waveguide. A second hollow core waveguide is coupled to the other end of the optical fiber. A second lens assembly operably coupled to the second hollow core waveguide. The length of the hollow core waveguides range from about 5 to 100 times the focal lengths of the lens assemblies. A motion control system is operably coupled to the second hollow core waveguide and the second lens assembly for controllably displacing the second hollow core waveguide and the second lens assembly with respect to a workpiece.

    摘要翻译： 激光传输系统用于检查工件。 该系统具有耦合到第一透镜组件的激光束源。 第一中空芯波导可操作地耦合到第一透镜组件。 耦合到第一中空芯波导的光纤的端部。 第二中空芯波导耦合到光纤的另一端。 可操作地耦合到第二中空芯波导的第二透镜组件。 中空芯波导的长度为透镜组件的焦距的约5至100倍。 运动控制系统可操作地耦合到第二中空芯波导和第二透镜组件，用于相对于工件可控地移动第二中空芯波导和第二透镜组件。

    PRE-AMPLIFIER FOR DETECTION LASERS WITHIN LASER ULTRASONIC INSPECTION SYSTEMS
    10.
    发明申请
    PRE-AMPLIFIER FOR DETECTION LASERS WITHIN LASER ULTRASONIC INSPECTION SYSTEMS 有权
    用于激光超声波检测系统中检测激光器的前置放大器

    公开(公告)号：US20080181268A1

    公开(公告)日：2008-07-31

    申请号：US11688379

    申请日：2007-03-20

    申请人： Marc Dubois ,  Thomas E. Drake ,  Kenneth R. Yawn

    发明人： Marc Dubois ,  Thomas E. Drake ,  Kenneth R. Yawn

    IPC分类号： G01B11/16 ,  H01S3/13

    CPC分类号： G01H9/008 ,  G01N21/1702 ,  G01N29/2418 ,  G01N2021/1706 ,  G01N2291/0231

    摘要： A pulse detection laser is provided. The pulse detection laser includes a single frequency oscillator, a continuous pre-amplifier, and a pulsed amplifier. The single frequency oscillator generates a seed laser beam and is optically coupled to the continuous preamplifier. The continuous pre-amplifier amplifies the seed laser to produce an intermediate power laser beam. A pulsed amplifier optically coupled to the continuous pre-amplifier receives the intermediate power laser beam and amplifies the intermediate power laser beam to produce a pulse detection laser beam. One task of this pulse detection laser is to illuminate ultrasonic displacements. Light from the laser is scattered, collected, and analyzed with an interferometer to demodulate the ultrasonic displacements caused by the return echoes of the ultrasound at the surface of the part.

    摘要翻译： 提供脉冲检测激光器。 脉冲检测激光器包括单频振荡器，连续前置放大器和脉冲放大器。 单频振荡器产生种子激光束并且光连接到连续前置放大器。 连续的前置放大器放大种子激光器以产生中间功率激光束。 光耦合到连续前置放大器的脉冲放大器接收中间功率激光束并放大中间功率激光束以产生脉冲检测激光束。 该脉冲检测激光器的一个任务是照亮超声波位移。 来自激光的光被散射，收集并用干涉仪分析，以解调超声波在部件表面的返回回波引起的超声位移。