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公开(公告)号：US20100118901A1
公开(公告)日：2010-05-13
申请号：US12481460
申请日：2009-06-09
CPC分类号： H01S3/0315 , H01S3/0385 , H01S3/041 , H01S3/2232
摘要： A carbon-dioxide (CO2) gas-discharge slab laser includes elongated discharge-electrodes in a sealed enclosure. Radio Frequency (RF) power is supplied to the electrodes via an impedance matching network and a co-axial electrical low inductance transmission line feed-through sealed to the enclosure. The feed-trough includes two spring contacts which are configured to be spring compression push-fit in grooves in edges of the discharge-electrodes. A central conductor of the feed-through is fluid cooled. A capacitor of the impedance matching network is assembled on the central conductor as an integral part of the feed-trough.
摘要翻译： 二氧化碳（CO 2）气体放电板激光器在密封的外壳中包括细长的放电电极。 射频（RF）功率经由阻抗匹配网络和同轴电气低电感传输线馈通密封到外壳提供给电极。 馈电槽包括两个弹簧触头，其构造成在放电电极的边缘的凹槽中被压配合成弹簧压配合。 馈通的中心导体是流体冷却的。 阻抗匹配网络的电容器作为馈电槽的组成部分组装在中心导体上。
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公开(公告)号：US20080240183A1
公开(公告)日：2008-10-02
申请号：US12079296
申请日：2008-03-26
IPC分类号： H01S3/041
CPC分类号： H01S3/2232 , H01S3/0014 , H01S3/03 , H01S3/0407 , H01S3/041
摘要： The laser tube housing of a CO2 slab laser is provided with a cooling system in which coolant fluid tubes are inserted into hollowed out portions formed in the longitudinal sidewalls of the laser tube housing; mounting the coolant fluid tubes in this way provides for enhanced cooling and increased stiffness of the laser tube housing. Also, a cooling system is provided for the laser's electrode assembly that relies on a manifold system that is mounted on a longitudinal sidewall of the laser tube housing to route coolant fluid through the sidewall to the electrode assembly; sidewall flow of the coolant fluid enables the end flanges of the laser tube housing to be remove without disturbing either the electrodes or the optical resonator of the laser. Also, a bracket assembly is provided for attaching the laser's electrode assembly to a longitudinal sidewall of the laser tube housing; the bracket assembly includes two brackets each of which is attached to a respective end of the electrode assembly and each of which is also attached to a longitudinal sidewall of the laser tube housing in proximity to a respective longitudinal end of the laser tube housing.
摘要翻译： CO 2平板激光器的激光管壳体设置有冷却系统，其中冷却剂流体管被插入形成在激光管壳体的纵向侧壁中的中空部分中; 以这种方式安装冷却剂流体管道提供激光管壳体的增强的冷却和增加的刚度。 此外，为激光器的电极组件提供依赖于安装在激光管壳体的纵向侧壁上以将冷却剂流体通过侧壁引导到电极组件的歧管系统的冷却系统; 冷却剂流体的侧壁流动使得能够去除激光管壳体的端部凸缘而不干扰激光器的电极或光学谐振器。 此外，提供了一种支架组件，用于将激光器的电极组件附接到激光管壳体的纵向侧壁; 托架组件包括两个托架，每个托架附接到电极组件的相应端部，并且每个托架还附接到靠近激光管壳体的相应纵向端的激光管壳体的纵向侧壁。
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公开(公告)号：US5780724A
公开(公告)日：1998-07-14
申请号：US824948
申请日：1997-03-27
摘要： A photo-acoustic leak detection system for detecting a gas leaking from a component (30), includes at least one laser beam (20), incident on the component (30) and having a wavelength which is absorbed by the gas, the gas emitting a photo-acoustic signal (36) when the gas absorbs light from the beam (20), the beam (20) being pulsed at a pulse frequency, the pulse frequency being related to a detection frequency of the photo-acoustic signal and being a frequency at which the magnitude of background acoustic noise at the detection frequency is at a predetermined low level, at least one acoustic sensor (40), which receives the photo-acoustic signal (36) and provides a sensor signal on the line (42) indicative thereof to a filter (44) and a synchronous detector (18), which provide a filtered signal on a line (50) to a signal processor (52). The processor (52) provides an output signal on a line (54) indicative of the leak in the component. Setting such pulse frequency to a low level acoustic noise frequency allows the signal-to-noise response to be greatly increased.
摘要翻译： 一种用于检测从部件（30）泄漏的气体的光声泄漏检测系统，包括入射在部件（30）上并具有由气体吸收的波长的至少一个激光束（20），所述气体发射 当所述气体吸收来自所述光束（20）的光时，所述光束（20）以脉冲频率脉冲的光声信号（36），所述脉冲频率与所述光声信号的检测频率相关，并且为 在检测频率处的背景声学噪声的大小处于预定的低电平的频率;至少一个接收光声信号（36）并且在线路（42）上提供传感器信号的声学传感器（40） 指示给滤波器（44）和同步检测器（18），其将线路（50）上的滤波信号提供给信号处理器（52）。 处理器（52）在指示组件中的泄漏的线（54）上提供输出信号。 将这种脉冲频率设置为低水平的声学噪声频率允许大大提高信噪比响应。
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公开(公告)号：US5513913A
公开(公告)日：1996-05-07
申请号：US069231
申请日：1993-05-28
申请人： Gary A. Ball , Gerald Meltz , Leon A. Newman
发明人： Gary A. Ball , Gerald Meltz , Leon A. Newman
IPC分类号： G01K11/12 , G01B11/16 , G01D5/353 , G01D21/00 , G01M11/00 , G01N21/21 , G01N21/23 , G01N21/41 , H01S3/067 , G01K11/00 , G01L1/24
CPC分类号： G01D5/35383 , G01J3/1895 , H01S3/0675
摘要： A remote active multipoint fiber laser sensor includes a plurality of fiber lasers 12,14,16, each having a pair of Bragg gratings 18,20, embedded in a fiber 10 and excited by a common pump light 30. The lasers 12,14,16 lase at different longitudinal modes (lasing wavelengths) and emit light 32,34,36, at their respective wavelengths .lambda.1,.lambda.2,.lambda.n. The lasing wavelength of each laser shifts due to perturbations, such as strain or temperature, applied thereto. The output light 32,34,36 is fed to a spectrum analyzer 50 where the wavelength shift is analyzed. A signal processor 54 reads the wavelength shift and provides a signal on lines 56 indicative of the perturbation at each of the lasers/sensors 12-16. Alternatively, a single laser may be used as a single sensor. Alternatively, birefringent fiber may be used as the fiber cavities 21 and the two polarizations are beat together to form a lower difference or "beat" frequency, thereby allowing lower frequency detection devices to be used.
摘要翻译： 远程有源多点光纤激光传感器包括多个光纤激光器12,14,16，每个光纤激光器12,14,16各自具有嵌入在光纤10中并被公共泵浦光30激发的一对布拉格光栅18,20。激光器12,14， 16以不同的纵向模式（激光波长）发光，并以它们各自的波长λ1，λ2，λn发光32,34,36。 每个激光器的激光波长由于施加到其上的扰动（例如应变或温度）而移动。 输出光32,34,36被馈送到频谱分析器50，其中分析波长偏移。 信号处理器54读取波长偏移，并在线56上提供指示每个激光器/传感器12-16处的扰动的信号。 或者，单个激光器可以用作单个传感器。 或者，可以使用双折射光纤作为光纤腔21，并且两个偏振被一起击打以形成较低的差或“拍”频率，从而允许使用较低频率检测装置。
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公开(公告)号：US08201954B2
公开(公告)日：2012-06-19
申请号：US12464442
申请日：2009-05-12
申请人： Adrian Papanide , Leon A. Newman , Lanny Laughman
发明人： Adrian Papanide , Leon A. Newman , Lanny Laughman
IPC分类号： G02B7/182
CPC分类号： H01S3/0401 , H01S3/0346 , H01S3/2232
摘要： A mirror assembly for a carbon dioxide (CO2) slab laser resonator includes a center section having a rectangular cross-section and a pair of thermal balancing bars. A concave reflecting surface formed on a front edge of a center section. The side-bars are attached to either side of the center section and extend forward of the reflective surface. Dimensions of the center section and side bars are selected to position the thermal neutral plane of the assembly close to the reflective surface. This minimizes changes the radius of curvature of the reflective surface due to heating by circulating radiation in the resonator.
摘要翻译： 用于二氧化碳（CO 2）板激光谐振器的反射镜组件包括具有矩形横截面的中心部分和一对热平衡棒。 形成在中心部的前缘上的凹面反射面。 侧杆连接到中心部分的任一侧并且延伸到反射表面的前方。 选择中心部分和侧杆的尺寸以将组件的热中性面平面靠近反射表面。 这最小化了由于通过在谐振器中循环辐射的加热而导致的反射表面的曲率半径的变化。
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公开(公告)号：US07664159B2
公开(公告)日：2010-02-16
申请号：US12168376
申请日：2008-07-07
CPC分类号： H01S3/0346 , G02B7/182 , H01S3/0401
摘要： A laser mirror assembly is disclosed with improved pointing stability. An elongated mirror includes a concave reflecting portion. A pair of elongated planar portions extend parallel to the concave reflecting portion on either side thereof. The planar portions are stepped down from the reflecting portion. The mirror is formed from copper. A pair of stainless steel strips are connected to planar portions. The bimetallic effect between the copper mirror and the stainless steel strips operates to counteract the warping of the mirror due to differential heating effects which arise during operation. In an alternate embodiment, a pair of aluminum strips are mounted on the rear surface of the mirror.
摘要翻译： 公开了具有改进的指向稳定性的激光镜组件。 细长的反射镜包括凹入的反射部分。 一对细长的平面部分在其任一侧平行于凹面反射部分延伸。 平面部分从反射部分下降。 镜子由铜形成。 一对不锈钢带连接到平面部分。 铜镜和不锈钢带之间的双金属效应用于抵消由于在操作期间出现的不同的加热效应导致的镜的翘曲。 在替代实施例中，一对铝条被安装在反射镜的后表面上。
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17.发明申请RF SHIELDED, SERIES INDUCTOR, HIGH RF POWER IMPEDANCE MATCHING INTERCONNECTOR FOR CO2 SLAB LASER 有权射频屏蔽，串联电感，高频功率阻抗匹配互连二氧化碳激光公开(公告)号：US20090004918A1
公开(公告)日：2009-01-01
申请号：US12051232
申请日：2008-03-19
申请人： ADRIAN PAPANIDE , Frederick W. Hauer , Leon A. Newman , Thomas V. Hennessey, JR. , Christian J. Shackleton , Joel Fontanella , Gongxue Hua
发明人： ADRIAN PAPANIDE , Frederick W. Hauer , Leon A. Newman , Thomas V. Hennessey, JR. , Christian J. Shackleton , Joel Fontanella , Gongxue Hua
CPC分类号： H01S3/041 , H01R24/44 , H01R2103/00 , H01S3/02 , H01S3/032 , H01S3/038 , H01S3/04 , H01S3/0407 , H01S3/09702 , H01S3/09705 , H01S3/0971 , H01S3/2232 , H03H7/38
摘要： A RF shielded, series inductor, high power impedance matching network interconnector is provided for connecting an RF power supply to electrodes contained in the shielded, hermetically sealed laser tube housing of a slab laser system. The impedance matching interconnector comprises a short length of co-axial conductor and an impedance matching network that includes two L shaped networks. The inner conductor of the co-axial conductor is connected between the power supply output and the impedance matching network. The outer conductor of the co-axial conductor is grounded. The co-axial conductor has an impedance characteristic to match the power supply output impedance. The first L-shaped network includes a first inductor having a first end connected to the inner conductor of the co-axial conductor and a first capacitor connected to the second end of the first inductor and a second plate connected to ground. The second L shaped network includes a second inductor having a first end connected to the common connection between the second end of the first inductor and the first plate of the first capacitor and a second capacitor having a first plate connected to the second end of the second inductor and a second plate connected to ground. The common connection between the second end of the second inductor and the first plate of the second capacitor is connected through the shielded, hermetically sealed laser tube housing to the electrodes of the slab laser system. The two L-shaped networks may be implemented in a “single capacitor” configuration for lower power applications or in a “multi-capacitor” configuration for higher power applications.
摘要翻译： 提供RF屏蔽串联电感器，高功率阻抗匹配网络互连器，用于将RF电源连接到平板激光系统的屏蔽密封激光管外壳中包含的电极。 阻抗匹配互连器包括短长度的同轴导体和包括两个L形网络的阻抗匹配网络。 同轴导体的内导体连接在电源输出和阻抗匹配网络之间。 同轴导体的外导体接地。 同轴导体具有匹配电源输出阻抗的阻抗特性。 第一L形网络包括第一电感器，其具有连接到同轴导体的内导体的第一端和连接到第一电感器的第二端的第一电容器和连接到地的第二板。 第二L形网络包括第二电感器，第二电感器具有连接到第一电感器的第二端和第一电容器的第一板之间的公共连接的第一端和第二电容器，第二电容器具有连接到第二电感器的第二端的第一板 电感器和连接到地的第二板。 第二电感器的第二端和第二电容器的第一板之间的公共连接通过屏蔽密封的激光管外壳连接到板式激光系统的电极。 两个L形网络可以用于较低功率应用的“单电容器”配置或用于较高功率应用的“多电容器”配置中。
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公开(公告)号：US4438514A
公开(公告)日：1984-03-20
申请号：US349236
申请日：1982-02-16
IPC分类号： H01S3/03 , H01S3/07 , H01S3/081 , H01S3/1055 , H01S3/23
CPC分类号： H01S3/0315 , H01S3/076 , H01S3/081 , H01S3/1055 , H01S3/2383
摘要： An RF-discharge waveguide laser having two parallel waveguides is improved by the addition of coupling channels which permit the plasma in said waveguides to communicate.
摘要翻译： 通过添加允许所述波导中的等离子体连通的耦合通道来改善具有两个平行波导的RF放电波导激光器。
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公开(公告)号：US07508850B2
公开(公告)日：2009-03-24
申请号：US10932818
申请日：2004-09-02
IPC分类号： H01S3/10
CPC分类号： B23K26/0622 , B23K26/382 , B23K2101/42 , B23K2103/50 , G02F1/0327 , G02F2203/54 , H01S3/0057
摘要： The quality of pulses output from laser systems such as super-pulsed CO2 slab lasers can be improved using half-wavelength electro-optic modulators (EOMs), in combination with thin film polarizers (TFPs). A voltage applied across a CdTe crystal of the EOM rotates the polarization of a pulse passing through the EOM by 90°. The polarization determines whether the pulse passes through, or is redirected by, the TFP. The voltage applied to the crystal can be pulsed to prevent a drop in charge, which could allow radiation to leak to the application. A totem pole switch used to apply voltage to the EOM can receive a pulsed voltage for improved performance. Directing by the EOM allows pulses to be clipped at the front/back end(s), split into portions, and/or directed to separate scanners. Directing pulses or pulse portions to different scanners can increase the output of systems such as hole drilling systems.
摘要翻译： 使用半波长电光调制器（EOM）与薄膜偏振器（TFP）组合，可以提高激光系统（如超脉冲CO2平板激光器）输出脉冲的质量。 施加在EOM的CdTe晶体两端的电压将通过EOM的脉冲的极化旋转90°。 极化决定脉冲是否通过TFP或被TFP重定向。 施加到晶体的电压可以被脉冲以防止电荷下降，这可能使辐射泄漏到应用中。 用于向EOM施加电压的图腾柱开关可以接收脉冲电压以提高性能。 通过EOM引导允许在前/后端剪切脉冲，分割成部分，和/或指向分离的扫描仪。 将脉冲或脉冲部分引导到不同的扫描仪可以增加系统的输出，例如钻孔系统。
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公开(公告)号：US20080205475A1
公开(公告)日：2008-08-28
申请号：US12033619
申请日：2008-02-19
申请人： Peter P. Chenausky , Lanny Laughman , Eric R. Mueller , Leon A. Newman , Vernon A. Seguin , Christian J. Shackleton
发明人： Peter P. Chenausky , Lanny Laughman , Eric R. Mueller , Leon A. Newman , Vernon A. Seguin , Christian J. Shackleton
IPC分类号： H01S3/00
CPC分类号： H01S3/0818 , H01S3/0315 , H01S3/2232
摘要： Through the use of a relatively inexpensive third mirror on a novel folded hybrid unstable resonator configuration, the optimum output coupling for a given laser design can be explored quickly and easily with a minimum of intracavity mirror alignment. No changes in either the radii of curvature of the three cavity optics or their spacing are required for this exploration. In addition to providing techniques for purposefully and systematically introducing mirror edge effects or avoiding edges effects altogether, the invention provides that output beams of different width can be advantageously explored in a relatively simple and straightforward manner. The invention provides that higher geometric magnification cavity designs may be made compatible with low diffraction output coupling in a configuration that uses only three totally reflecting optics.
摘要翻译： 通过在新颖的折叠混合不稳定谐振器结构上使用相对便宜的第三反射镜，可以用最小的腔内反射镜对准来快速且容易地探索给定激光设计的最佳输出耦合。 这种探索需要三腔光学器件的曲率半径或其间距的变化。 除了提供有意和系统地引入镜面边缘效果或完全避免边缘效应的技术之外，本发明还提供了以相对简单和直接的方式有利地探索不同宽度的输出光束。 本发明提供了在仅使用三个全反射光学器件的构造中，较高的几何放大空腔设计可以与低衍射输出耦合兼容。
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