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41.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
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。
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公开(公告)号：US07791739B2
公开(公告)日：2010-09-07
申请号：US10828068
申请日：2004-04-20
IPC分类号： G01B11/14
CPC分类号： G01N29/2418 , G01N29/348 , G01N2291/0421
摘要： A system and method that replaces safety requirements of a laser detection system by shifting the wavelength of a detection laser. An optical wavelength converter that shifts the optical wavelength of a detection laser from a first wavelength within the Infrared “A” portion of the spectrum to a more eye-safe wavelength. The detection laser is directed to the surface of a remote target. Ultrasonic displacements at the surface scatter the filtered detection laser. Collection optics then gather phase modulated light scattered by the surface and direct the phase modulated light to an optical processor that produces a signal representative of the ultrasonic displacements. Signal processors then determine the internal structure of the remote target based on the signal.
摘要翻译： 通过移动检测激光器的波长来代替激光检测系统的安全要求的系统和方法。 一种光学波长转换器，其将检测激光器的光波长从光谱的红外“A”部分内的第一波长移位到更安全的波长。 检测激光器被引导到远程目标的表面。 表面上的超声波位移散射了滤波的检测激光。 收集光学器件然后收集由表面散射的相位调制光，并将相位调制光引导到产生表示超声波位移的信号的光学处理器。 然后，信号处理器根据信号确定远程目标的内部结构。
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公开(公告)号：US07784348B2
公开(公告)日：2010-08-31
申请号：US11709342
申请日：2007-02-21
CPC分类号： G01N21/1702 , G10K15/046
摘要： An ultrasonic non-destructive evaluation (NDE) system operable to inspect target materials is provided. This ultrasonic NDE system includes an articulated robot, an ultrasound inspection head, a processing module, and a control module. The ultrasound inspection head couples to or mounts on the articulated robot. The ultrasound inspection head is operable to deliver a generation laser beam, a detection laser beam, and collect phase modulated light scattered by the target materials. The processing module processes the phase modulated light and produces information about the internal structure of the target materials. The control module directs the articulated robot to position the ultrasound inspection head according to a pre-determined scan plan.
摘要翻译： 提供可操作以检查目标材料的超声波无损评估（NDE）系统。 该超声波NDE系统包括铰接机器人，超声检查头，处理模块和控制模块。 超声波检查头与铰接式机器人连接或安装在关节式机器人上。 超声波检查头可操作地传送一代激光束，检测激光束，并收集由目标材料散射的相位调制光。 处理模块处理相位调制光并产生关于目标材料的内部结构的信息。 控制模块根据预先确定的扫描计划指示关节式机器人定位超声检查头。
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公开(公告)号：US07734133B2
公开(公告)日：2010-06-08
申请号：US12121559
申请日：2008-05-15
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。
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45.发明授权Apparatus and method for two wave mixing (TWM) based ultrasonic laser testing 有权用于双波混频（TWM）的超声波激光测试装置和方法公开(公告)号：US07684047B2
公开(公告)日：2010-03-23
申请号：US11553485
申请日：2006-10-27
申请人： Thomas E. Drake , Marc Dubois
发明人： Thomas E. Drake , Marc Dubois
IPC分类号： G01B11/02
CPC分类号： G01N29/2418 , G01B9/02083 , G01B2290/65 , G01N2291/0231
摘要： A system and method for detecting ultrasonic surface displacements at a remote target are disclosed, one embodiment of the system comprising: a first laser to generate a first laser beam. The first laser beam produces ultrasonic surface displacements on a surface of the remote target. A second laser generates a second laser beam operable to detect the ultrasonic surface displacements on the surface of the remote target and to provide a reference beam to an interferometer. The second laser beam is split, at a beam-splitter, into a pump beam and a probe beam. The pump beam is amplified by a first amplifier and the probe beam is amplified by a second amplifier. The pump beam is then provided to the interferometer as a reference beam and the probe beam is directed to the target to detect the ultrasonic surface displacements. The first and second amplifiers can be controlled independently of one another to control their respective laser beam's power. Collection optics collect phase modulated light from the probe beam either reflected or scattered by the remote target, which can be optionally optically processed to increase the light intensity. The interferometer is a TWM interferometer that receives and processes the phase modulated light and generates at least one output signal based on the phase-modulated light and the amplified reference laser beam.
摘要翻译： 公开了一种用于在远程目标处检测超声表面位移的系统和方法，该系统的一个实施例包括：第一激光器，用于产生第一激光束。 第一激光束在远程目标的表面上产生超声表面位移。 第二激光器产生可操作以检测远程目标表面上的超声波表面位移并向干涉仪提供参考光束的第二激光束。 第二激光束在分束器处分成泵浦光束和探测光束。 泵浦光束由第一放大器放大，并且探测光束被第二放大器放大。 然后将泵浦光束作为参考光束提供给干涉仪，并将探测光束引导到目标以检测超声波表面位移。 可以彼此独立地控制第一和第二放大器以控制它们各自的激光束的功率。 收集光学器件收集来自探测光束的相位调制光，其被远程目标物反射或散射，其可以可选地被光学处理以增加光强度。 干涉仪是TWM干涉仪，其接收和处理相位调制光并且基于相位调制光和放大的参考激光束产生至少一个输出信号。
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公开(公告)号：US20090285527A1
公开(公告)日：2009-11-19
申请号：US12121507
申请日：2008-05-15
申请人： Marc Dubois , Thomas E. Drake, JR.
发明人： Marc Dubois , Thomas E. Drake, JR.
IPC分类号： G02B6/32
CPC分类号： B23K26/06 , G02B6/4206 , G02B6/4296
摘要： A laser transmission system.
摘要翻译： 激光传输系统。
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公开(公告)号：US07612894B2
公开(公告)日：2009-11-03
申请号：US11458377
申请日：2006-07-18
申请人： Thomas E. Drake , Marc Dubois
发明人： Thomas E. Drake , Marc Dubois
IPC分类号： G01B11/14
CPC分类号： G01N29/2418 , G01H9/004 , G01N29/265 , G01N2291/0231
摘要： Embodiments of the present invention relates to an improved laser for the optical detection of ultrasound. The primary task of this “first” detection laser is to illuminate the spot where a “second” laser is used to generate ultrasound in the part under test. The scattered light from the first laser is collected and analyzed with an interferometer to demodulate the surface vibrations caused by the return echoes of the ultrasound at the surface of the part. The improved detection laser (first laser) is constructed using a diode-pumped fiber laser to produce a high power single-frequency laser source.
摘要翻译： 本发明的实施例涉及一种用于超声波光学检测的改进的激光器。 该“第一”检测激光器的主要任务是照亮“第二”激光器在被测部件中产生超声的位置。 收集来自第一激光器的散射光并用干涉仪进行分析，以解调由该部件表面的超声波返回回波引起的表面振动。 改进的检测激光器（第一激光器）使用二极管泵浦的光纤激光器来构造，以产生高功率单频激光源。
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48.发明申请公开(公告)号：US20080291465A1
公开(公告)日：2008-11-27
申请号：US11567444
申请日：2006-12-06
申请人： PETER WILIIAM LORRAINE , Donald Robert Iioward , Harry Israel Ringermacher , Marc Dubois , Thomas E. Drake
发明人： PETER WILIIAM LORRAINE , Donald Robert Iioward , Harry Israel Ringermacher , Marc Dubois , Thomas E. Drake
CPC分类号： G01N29/228 , G01N21/1717 , G01N25/72 , G01N29/2418 , G01N2291/0231 , G01N2291/02881
摘要： An inspection system is provided to examine internal structures of a target material. This inspection system includes a generation laser, an ultrasonic detection system, a thermal imaging system, and a processor/control module. The generation laser produces a pulsed laser beam that is operable to induce ultrasonic displacements and thermal transients at the target material. The ultrasonic detection system detects ultrasonic surface displacements at the target material. The thermal imaging system detects thermal transients at the target material. The processor analyzes both detected ultrasonic displacements and thermal imagery of the target material to yield information about the target material's internal structure.
摘要翻译： 提供检查系统来检查目标材料的内部结构。 该检查系统包括发电激光器，超声波检测系统，热成像系统和处理器/控制模块。 一代激光器产生脉冲激光束，其可操作以在靶材料处诱导超声波位移和热瞬变。 超声波检测系统检测目标材料的超声表面位移。 热成像系统检测目标材料的热瞬变。 处理器分析检测到的超声波位移和目标材料的热像，以产生关于目标材料的内部结构的信息。
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公开(公告)号：US20080247011A1
公开(公告)日：2008-10-09
申请号：US12140807
申请日：2008-06-17
申请人： Brian Lee Lawrence , Marc Dubois , Pingfan Peter Wu , Joseph Lucian Smolenski , Xiaolei Shi , Eugene Pauling Boden
发明人： Brian Lee Lawrence , Marc Dubois , Pingfan Peter Wu , Joseph Lucian Smolenski , Xiaolei Shi , Eugene Pauling Boden
IPC分类号： G03H1/20
CPC分类号： G11B7/245 , G02B5/32 , G03H2001/0417 , G11B7/0065 , G11B7/00772 , G11B7/00781 , G11B7/131 , G11B7/1362 , G11B7/1369 , G11B7/24012 , G11B7/24038 , G11B7/24044 , G11B7/24085 , G11B7/246 , G11B7/261 , G11B7/28 , G11B20/00086 , G11B20/00115 , G11B20/10 , G11B2007/0013
摘要： A method for storing data including: providing a first substrate having a plurality of micro-holograms therein, the micro-holograms being indicative of the data; providing a second hologram-supporting substrate; illuminating the plurality of micro-holograms in the first substrate through the second substrate, thereby producing a holographic pattern in the second substrate indicative of reflections of the plurality of micro-holograms in the first substrate; providing a third hologram-supporting substrate; and, illuminating the holographic pattern in the second substrate through the third substrate, thereby substantially replicating the plurality of micro-holograms in the first substrate in the third substrate.
摘要翻译： 一种用于存储数据的方法，包括：提供其中具有多个微全息图的第一基底，所述微全息图指示数据; 提供第二全息图支撑衬底; 通过所述第二基板照亮所述第一基板中的所述多个微全息图，从而在所述第二基板中产生指示所述多个微全息图在所述第一基板中的反射的全息图案; 提供第三全息图支撑衬底; 并且通过第三基板照亮第二基板中的全息图案，从而基本上复制第三基板中的第一基板中的多个微全息图。
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公开(公告)号：US07411991B2
公开(公告)日：2008-08-12
申请号：US10815907
申请日：2004-03-31
IPC分类号： H01S3/081
CPC分类号： H01S3/09415 , G11B7/0065 , G11B7/127 , H01S3/0815 , H01S3/1062 , H01S3/109 , H01S3/1623 , H01S3/1631
摘要： Embodiments of methods, apparatuses, devices, and/or systems for a tunable laser are described. An apparatus includes: a tunable laser cavity including at least three mirrors, at least one filter and a plurality of crystals, wherein the three mirrors are substantially arranged in a lambda configuration, the filter includes a birefringent filter and an etalon, at least one of the crystals comprises a Cologuiriite crystal, and at least one other of the crystals comprises a nonlinear crystal, wherein the mirrors, the filter, and the plurality are configured for providing electromagnetic radiation of an approximately single frequency; and at least one electromagnetic radiation source being coupled to the laser cavity, wherein the electromagnetic radiation source is capable of providing electromagnetic radiation having an approximately particular wavelength to the laser cavity.
摘要翻译： 描述了可调谐激光器的方法，装置，装置和/或系统的实施例。 一种装置包括：可调激光腔，包括至少三个反射镜，至少一个滤光器和多个晶体，其中三个反射镜基本上以λ构型布置，滤光器包括双折射滤光器和标准具，至少一个 所述晶体包括Cologuiriite晶体，并且所述晶体中的至少一个晶体包括非线性晶体，其中所述反射镜，所述滤光器和所述多个晶体被配置用于提供近似单个频率的电磁辐射; 以及耦合到所述激光腔的至少一个电磁辐射源，其中所述电磁辐射源能够向所述激光腔提供具有近似特定波长的电磁辐射。
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