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    Dual-wavelength frequency-chirped microwave AMCW ladar system
    31.
    发明授权
    Dual-wavelength frequency-chirped microwave AMCW ladar system 失效
    双波长啁啾微波AMCW系统

    公开(公告)号：US5534993A

    公开(公告)日：1996-07-09

    申请号：US260136

    申请日：1994-06-15

    申请人： Gary A. Ball ,  Leon A. Newman

    发明人： Gary A. Ball ,  Leon A. Newman

    IPC分类号： G01S17/32 ,  G01C3/00

    CPC分类号： G01S17/325 ,  G01S7/497

    摘要： An amplitude modulated continuous wave (AMCW) laser radar (ladar) system is provided with a dual-wavelength source 10 which provides a dual wavelength signal 12 (one fixed and one chirped) which is launched down a fiber 28 to a target 38 and reflected back along the fiber 28 and the return detected by a detector 52. The transmitted signal is detected by a detector 56. The detectors 52, 56 provide an electrical return beat signal and reference beat signal, respectively, indicative of the difference between the wavelengths incident thereon. The signals are fed to a frequency mixer 60 which subtracts the two beat frequencies and signal processing logic 64 computes the distance to the target 38. Using dual wavelengths and beat frequencies provides a much broader chirp bandwidth than conventional ladar techniques, and allows for higher power sources, thereby reducing range error.

    摘要翻译： 幅度调制连续波（AMCW）激光雷达（拉达）系统设有双波长源10，双波长源10提供双波长信号12（一个固定和一个啁啾），其从光纤28向下发射到目标38并被反射 传输的信号由检测器56检测。检测器52,56分别提供电返回拍频信号和参考节拍信号，其指示波长事件之间的差异 上。 信号被馈送到混频器60，该混频器减去两个拍频，并且信号处理逻辑64计算到目标38的距离。使用双波长和拍频可提供比传统的拉达技术更宽的啁啾带宽，并且允许更高的功率 来源，从而减少范围误差。

    Waveguide laser having a capacitively coupled discharge
    32.
    发明授权
    Waveguide laser having a capacitively coupled discharge 失效
    具有电容耦合放电的波导激光器

    公开(公告)号：US4381564A

    公开(公告)日：1983-04-26

    申请号：US286225

    申请日：1981-07-23

    申请人： Leon A. Newman

    发明人： Leon A. Newman

    IPC分类号： H01S3/03 ,  H01S3/038 ,  H01S3/0975 ,  H01S3/08

    CPC分类号： H01S3/0975 ,  H01S3/0315 ,  H01S3/038

    摘要： A waveguide laser having a gain medium excited by a capacitively coupled self-sustained discharge is disclosed. The gain medium is disposed within a dielectric waveguide having a capillary bore centrally located therein. A gain medium such as a rare gas halide mixture is excited by a capacitively coupled discharge between a power electrode circumferentially and axially enveloping a central portion of the waveguide and ground electrodes disposed proximate the ends of the waveguide between the mirrors defining the optical cavity of the laser. A preferred embodiment of the laser further includes means for circulating the gain medium through the waveguide. The present invention is adapted for providing pulses of radiation having a wavelength in the ultraviolet and visible spectrum and pulse widths typically less than 30 nanoseconds with peak powers in excess of one kilowatt.

    摘要翻译： 公开了一种具有由电容耦合的自持放电激发的增益介质的波导激光器。 增益介质设置在具有中心位于其中的毛细孔的电介质波导内。 诸如稀有卤化物混合物之类的增益介质由功率电极周向和轴向地包围波导的中心部分之间的电容耦合放电而激发，接地电极设置在接近波导端部的两个反射镜之间，这些反射镜限定了 激光。 激光器的优选实施例还包括用于使增益介质循环通过波导的装置。 本发明适用于提供具有紫外线和可见光谱波长的辐射脉冲，并且脉冲宽度通常小于30纳秒，峰值功率超过一千瓦。

    Transformer for impedance-matching power output of RF amplifier to gas-laser discharge
    33.
    发明授权
    Transformer for impedance-matching power output of RF amplifier to gas-laser discharge 有权
    变压器用于将RF放大器的功率输出阻抗匹配到气体激光放电

    公开(公告)号：US07605673B2

    公开(公告)日：2009-10-20

    申请号：US11805542

    申请日：2007-05-23

    申请人： W. Shef Robotham, Jr. ,  Frederick W. Hauer ,  Leon A. Newman

    发明人： W. Shef Robotham, Jr. ,  Frederick W. Hauer ,  Leon A. Newman

    IPC分类号： H03H7/38

    CPC分类号： H01F19/04 ,  H01F27/2804 ,  H01F41/041 ,  H03F1/565 ,  H05K1/165

    摘要： An RF impedance-matching transformer for matching the output impedance of an RF amplifier to the discharge of a gas-discharge laser includes upper and lower dielectric plates arranged face-to-face and bonded together. A primary U-shaped strip winding is embedded in the bonded surface of one of the dielectric plates. A secondary strip-winding is formed on an exposed surface of the upper dielectric plates. A ground-plane electrode formed on an exposed surface of the lower dielectric plate. An electrical connector connects one end of the secondary strip-winding to the ground-plane electrode via a via-hole extending through the dielectric plates. The other end of the secondary strip-winding can be connected to the laser.

    摘要翻译： 用于将RF放大器的输出阻抗与气体放电激光器的放电匹配的RF阻抗匹配变压器包括面对面地布置并结合在一起的上电介质板和下电介质板。 一个U形条形绕组嵌入在一个电介质板的接合表面中。 第二条带绕组形成在上电介质板的暴露表面上。 形成在下介电板的暴露表面上的接地平面电极。 电连接器通过延伸穿过电介质板的通孔将次级带状绕组的一端连接到接地平面电极。 第二条带绕组的另一端可以连接到激光器。

    High damage threshold Q-switched CO2 laser
    34.
    发明申请
    High damage threshold Q-switched CO2 laser 审中-公开
    高损伤阈值Q开关CO2激光器

    公开(公告)号：US20080002751A1

    公开(公告)日：2008-01-03

    申请号：US11481887

    申请日：2006-07-06

    申请人： Gongxue Hua ,  Vernon Seguin ,  Leon A. Newman ,  Eric R. Mueller

    发明人： Gongxue Hua ,  Vernon Seguin ,  Leon A. Newman ,  Eric R. Mueller

    IPC分类号： H01S3/11 ,  H01S3/22

    CPC分类号： H01S3/2232 ,  H01S3/08054 ,  H01S3/08095 ,  H01S3/0813 ,  H01S3/0817 ,  H01S3/10046 ,  H01S3/115

    摘要： A thin film polarizer (TFP) and a half-wave CdTe electro-optical crystal are utilized to achieve a higher damage threshold in Q-switching CO2 lasers for material processing applications. Half-wave CdTe electro-optical modulators can be used without the arcing and corona problems typically associated with the higher drive voltage by placing low dielectric constant insulators (such as BeO) around the CdTe crystal. Doubling the voltage placed across a CdTe crystal enables the crystal to function as a half-wave phase retarder EO switch with the same dimensions as a crystal functioning as a quarter-wave EO modulator. These half-wave EO switches can be used with TFPs to shape the output pulses, as well as to direct alternate pulses of repetitively pulsed super pulsed slab lasers to alternate scanners, thereby doubling the output of laser hole drilling systems.

    摘要翻译： 利用薄膜偏振器（TFP）和半波长的CdTe电光晶体来实现用于材料加工应用的Q开关CO 2激光器的更高的损伤阈值。 通常在CdTe晶体周围放置低介电常数绝缘体（如BeO），可以使用半波长的CdTe电光调制器，而不会产生通常与较高驱动电压相关的电弧和电晕问题。 将跨越CdTe晶体的电压加倍使晶体能够作为与作为四分之一波长EO调制器的晶体相同尺寸的半波相位延迟器EO开关。 这些半波EO开关可与TFP一起使用，以形成输出脉冲，以及将重复脉冲的超脉冲平板激光器的交替脉冲引导到交替的扫描仪，从而使激光钻孔系统的输出加倍。

    High power waveguide laser
    36.
    发明授权
    High power waveguide laser 失效
    大功率波导激光器

    公开(公告)号：US06788722B1

    公开(公告)日：2004-09-07

    申请号：US09612733

    申请日：2000-07-10

    申请人： John T. Kennedy ,  Richard A. Hart ,  Leon A. Newman ,  Anthony J. DeMaria

    发明人： John T. Kennedy ,  Richard A. Hart ,  Leon A. Newman ,  Anthony J. DeMaria

    IPC分类号： H01S322

    CPC分类号： H01S3/0315 ,  H01S3/03 ,  H01S3/038 ,  H01S3/076 ,  H01S3/09702 ,  H01S3/09705

    摘要： The above discussed and other drawbacks and deficiencies of the prior art are overcome or alleviated by a laser of the present invention. In accordance with the present invention the laser comprises a housing defining a plurality of compartments therein, a folded waveguide disposed within the housing, the folded waveguide defining a plurality of channels having a substantially rectangular cross section for guiding a laser beam, a plurality of electrodes disposed in the plurality of compartments and juxtaposed along opposite surfaces of the waveguide and at least one power supply connected to the plurality of electrodes. The channels having a prescribed width to height ratio for a prescribed channel length for a given Fresnel number. At least one optical housing is provided. The optical housing is mounted to the laser housing, the optical housing including a plurality of beam turning mechanisms disposed within a plurality of compartments accessible for adjusting the beam turning mechanisms. The channels are disposed within the waveguide so as to subtend a prescribed angular orientation between adjacent channels. Inductors are provided for suppressing the capacitance of the electrodes.

    摘要翻译： 现有技术的上述讨论和其它缺陷和不足之处由本发明的激光器克服或减轻。 根据本发明，激光器包括在其中限定多个隔室的壳体，设置在壳体内的折叠波导，折叠波导限定多个通道，其具有用于引导激光束的基本上矩形的横截面，多个电极 设置在所述多个隔室中并且与所述波导的相对表面并置并且连接到所述多个电极的至少一个电源。 对于给定的菲涅耳数，对于规定的通道长度，通道具有规定的宽高比。 提供至少一个光学外壳。 光学壳体安装到激光器壳体上，光学壳体包括多个光束转动机构，其设置在可容纳以调节光束转动机构的多个隔间内。 通道设置在波导内，以便在相邻通道之间对准规定的角度取向。 电感器用于抑制电极的电容。

    RF excited waveguide laser
    38.
    发明授权
    RF excited waveguide laser 失效
    射频激发波导激光器

    公开(公告)号：US06192061B1

    公开(公告)日：2001-02-20

    申请号：US09039036

    申请日：1998-03-13

    申请人： Richard A. Hart ,  John T. Kennedy ,  Eric R. Mueller ,  Leon A. Newman

    发明人： Richard A. Hart ,  John T. Kennedy ,  Eric R. Mueller ,  Leon A. Newman

    IPC分类号： H01S3097

    CPC分类号： H01S3/0315 ,  H01S3/038 ,  H01S3/076

    摘要： A clamping device for an RF excited laser is provided which reduces stress on ceramic components and also is less expensive than existing clamping devices. The RF excited laser lacking an electrode over the waveguide channel intersection regions. Ceramic covers are provided over a portion of these channel intersection regions to reduce plasma build up. Increased power is achieved by adding a fourth channel to a conventional waveguide to form a ring resonator. The optical component mount uses radial compressive forces to hold the optical component to a post, thereby preventing the face of the optical component from being distorted. Mirror mounts are also configured to allow more mirrors to be mounted at each end of the laser. The waveguide channel of the RF excited laser having a U-shaped cross section and an aspect ratio grater than one-to-one, which improves laser performance. A beam redirection device allows the laser head to serve as a mounting surface for other optical components. Anamorphic beam expander prisms are provided to charge the laser beam diameter and recollimate the laser beam. Relief holes or slots are provided in the waveguide to relieve pressure build-up with the channels on the waveguide.

    摘要翻译： 提供了用于RF激发激光器的夹紧装置，其减小了陶瓷部件的应力，并且也比现有的夹紧装置便宜。 RF激光激光器在波导管道交叉区域上缺少电极。 陶瓷盖设置在这些通道交叉区域的一部分上以减少等离子体积聚。 通过向常规波导添加第四通道以形成环形谐振器来实现增加的功率。 光学部件安装件使用径向压缩力将光学部件保持在柱上，从而防止光学部件的表面变形。 镜座也配置为允许在激光的每一端安装更多的镜子。 RF激光激光器的波导通道具有U形横截面和纵横比格栅比一对一，这提高了激光性能。 光束重定向装置允许激光头用作其他光学部件的安装表面。 提供变形光束扩展器棱镜以对激光束直径进行充电并使激光束再振动。 在波导管中设有泄压孔或槽，以便利用波导管上的通道来缓解压力积聚。

    Phase locked staggered dielectric ridge array waveguide gas laser
    39.
    发明授权
    Phase locked staggered dielectric ridge array waveguide gas laser 失效
    锁相交错介质脊阵列波导气体激光器

    公开(公告)号：US4807232A

    公开(公告)日：1989-02-21

    申请号：US138898

    申请日：1987-12-28

    申请人： Richard A. Hart ,  Leon A. Newman ,  John T. Kennedy

    发明人： Richard A. Hart ,  Leon A. Newman ,  John T. Kennedy

    IPC分类号： H01S3/03 ,  H01S3/098

    CPC分类号： H01S3/2383 ,  H01S3/0315 ,  H01S3/08045 ,  H01S3/0975 ,  H01S3/1307

    摘要： A phase-locked staggered ridge array waveguide gas laser includes a body that circumferentially bounds an internal space extending along a central plane and containing a gaseous lasing medium. The gaseous medium is excited at radio frequency with attendant light emission from the gaseous medium. Mirrors are so positioned relative to the body as to provide lasing of the light emission. Two arrays of ridges extending into the internal space along a height dimension partition the internal space into two pluralities of laser resonator cavities each sustaining a guided mode of the lasing light emission. Each of the cavities extends longitudinally of the body and is spaced from an adjacent cavity in a width direction of the internal space. The ridges of each array are offset relative to those of the other array by substantially a half of the spacing between the ridges of each array and are so configured that a cavity of one of the pluralities alignedly opens into a portion of each of two adjacent ones of the cavities of the other plurality. Auxiliary ridge portions that are truncated to delimit respective gaps at the central plane may be provided midway between and coextensively with the ridges of each array.

    摘要翻译： 锁相交错脊阵列波导气体激光器包括沿着中心平面延伸并包含气体激光介质的内部空间的周向界定的主体。 气体介质在无线电频率下被激发，伴随着来自气体介质的光发射。 镜子相对于身体如此定位，以提供发光的激光。 沿着高度尺寸延伸到内部空间中的两个脊阵列将内部空间分成两个多个激光谐振腔，每个激光谐振腔保持激光发射的引导模式。 每个空腔在主体的纵向延伸并且在内部空间的宽度方向上与相邻的腔隔开。 每个阵列的脊部相对于另一个阵列的脊部相对于每个阵列的脊之间的间隔的大致一半偏移，并且被构造成使得多个之一的空腔对准地打开成两个相邻阵列中的每一个的一部分 的其他多个空腔。 在中心平面处被截断以限定相应间隙的辅助脊部可以设置在每个阵列的脊之间的中间并与之共同延伸。