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41. 发明授权

US07263116B2 Dielectric coupled CO2 slab laser 有权
标题翻译：介质耦合CO2平板激光器
公开(公告)号：US07263116B2
公开(公告)日：2007-08-28
申请号：US10912507
申请日：2004-08-05
申请人： Christian J. Shackleton , Phillip J. Gardner , Anthony J. DeMaria , Vernon Seguin , John T. Kennedy
发明人： Christian J. Shackleton , Phillip J. Gardner , Anthony J. DeMaria , Vernon Seguin , John T. Kennedy
IPC分类号： H01S3/03 , H01S3/223 , H01S3/097
CPC分类号： H01S3/0315 , H01S3/0388 , H01S3/0407 , H01S3/041 , H01S3/09705 , H01S3/0971 , H01S3/2232
摘要： A slab laser includes two elongated electrodes arranged spaced apart and face-to-face. Either one or two slabs of a solid dielectric material extend along the length of the electrodes between the electrodes. A discharge gap is formed either between one of the electrodes and one dielectric slab, or between two dielectric slabs. The discharge gap is filled with lasing gas. A pair of mirrors is configured and arranged to define a laser resonator extending through the gap. An RF potential is applied across the electrodes creating a gas discharge in the gap, and causing laser radiation to circulate in the resonator. Inserting dielectric material between the electrodes increases the resistance-capacitance (RC) time constant of the discharge structure compared with the RC time constant in the absence of dielectric material. This hinders the formation of arcs in the discharge, which enables the laser to operate with higher excitation power, higher lasing gas pressure, and higher output power than would be possible without the dielectric inserts.
摘要翻译：平板激光器包括间隔开并且面对面布置的两个细长电极。一个或两个固体电介质材料板沿电极的电极长度延伸。在一个电极和一个电介质板之间或两个电介质板之间形成放电间隙。放电间隙充满激光气体。一对反射镜被配置和布置成限定延伸穿过间隙的激光谐振器。在电极上施加RF电位，在间隙中产生气体放电，并使激光辐射在谐振器中循环。在不存在电介质材料的情况下，在电极间插入电介质材料会增加放电结构的电阻 - 电容（RC）时间常数。这阻碍了放电中的电弧形成，这使得激光器能够在没有电介质插入件的情况下以更高的激发功率，更高的激光气体压力和更高的输出功率运行。

42. 发明授权

US06826204B2 Q-switched CO2 laser for material processing 失效
标题翻译： Q切换CO2激光器进行材料加工
公开(公告)号：US06826204B2
公开(公告)日：2004-11-30
申请号：US10116392
申请日：2002-04-04
申请人： John T. Kennedy , Richard A. Hart , Lanny Laughman , Joel Fontanella , Anthony J. Demaria , Leon A. Newman , Robert Henschke
发明人： John T. Kennedy , Richard A. Hart , Lanny Laughman , Joel Fontanella , Anthony J. Demaria , Leon A. Newman , Robert Henschke
IPC分类号： H01S311
CPC分类号： B23K26/0624 , B23K26/382 , B23K26/389 , B23K26/40 , B23K2103/40 , B23K2103/42 , B23K2103/50 , B23K2103/52 , H01S3/0057 , H01S3/03 , H01S3/08095 , H01S3/0813 , H01S3/09702 , H01S3/107 , H01S3/115 , H01S3/117 , H01S3/1305 , H01S3/2232 , H01S3/2325 , H01S3/2366
摘要： A simultaneously super pulsed Q-switched CO2 laser system for material processing is disclosed. The system comprises sealed-off folded waveguides with folded mirrors that are thin film coated to select the output wavelength of the laser. The system also comprises a plurality of reflective devices defining a cavity; a gain medium positioned within the cavity for generating a laser beam; a cavity loss modulator for modulating the laser beam, generating thereby one or more laser pulses; a pulsed signal generation system connected to the cavity loss modulator for delivering pulsed signals to the cavity loss modulator thereby controlling the state of optical loss within the cavity; a control unit connected to the pulsed signal generation system for controlling the pulsed signal generation system; and a pulse clipping circuit receptive of a portion of the laser beam and connected to the pulsed signal generation system for truncating a part of the laser pulses.
摘要翻译：公开了一种用于材料加工的同时超级脉冲Q开关CO2激光系统。该系统包括具有折叠反射镜的封闭折叠波导，薄膜被涂覆以选择激光器的输出波长。该系统还包括限定空腔的多个反射装置; 位于腔内的增益介质，用于产生激光束; 用于调制激光束的腔损失调制器，从而产生一个或多个激光脉冲; 连接到空腔损耗调制器的脉冲信号发生系统，用于将脉冲信号传送到空腔损耗调制器，从而控制腔内光损耗的状态; 连接到用于控制脉冲信号发生系统的脉冲信号发生系统的控制单元; 以及接收激光束的一部分并连接到用于截断一部分激光脉冲的脉冲信号发生系统的脉冲削波电路。

43. 发明授权

US06788722B1 High power waveguide laser 失效
标题翻译：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。

44. 发明授权

US06697408B2 Q-switched cavity dumped CO2 laser for material processing 失效
标题翻译： Q型转换腔倾倒二氧化碳激光进行材料加工
公开(公告)号：US06697408B2
公开(公告)日：2004-02-24
申请号：US10116360
申请日：2002-04-04
申请人： John T. Kennedy , Richard A. Hart , Lanny Laughman , Joel Fontanella , Anthony J. Demaria , Leon A. Newman , Robert Henschke
发明人： John T. Kennedy , Richard A. Hart , Lanny Laughman , Joel Fontanella , Anthony J. Demaria , Leon A. Newman , Robert Henschke
IPC分类号： H01S322
CPC分类号： H01S3/2232 , H01S3/03 , H01S3/0315 , H01S3/0813 , H01S3/097 , H01S3/09702 , H01S3/1061 , H01S3/1075 , H01S3/1103 , H01S3/115 , H01S3/2325 , H01S3/2366
摘要： This disclosure discusses techniques for obtaining wavelength selected simultaneously super pulsed Q-switched and cavity dumped laser pulses utilizing high optical damage threshold electro-optic modulators, maintaining a zero DC voltage bias on the CdTe electro-optic modulator (EOM) so as to minimize polarization variations depending on the location of the laser beam propagating through the CdSe EOM crystal, as well as the addition of one or more laser amplifiers in a compact package and the use of simultaneous gain switched, Q-switched and cavity dumped operation of CO2 lasers for generating shorter pulses and higher peak power for the hole drilling, engraving and perforation applications.
摘要翻译：本公开内容讨论了利用高光损伤阈值电光调制器获得同时选择的同时超脉冲Q切换和空腔倾倒激光脉冲的技术，在CdTe电光调制器（EOM）上保持零直流电压偏置，从而最小化极化取决于通过CdSe EOM晶体传播的激光束的位置的变化，以及在紧凑型封装中添加一个或多个激光放大器以及使用CO 2激光器的同时增益切换，Q开关和空腔倾倒操作为钻孔，雕刻和穿孔应用产生更短的脉冲和更高的峰值功率。

45. 发明授权

US06192061B1 RF excited waveguide laser 失效
标题翻译：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。

46. 发明授权

US4807232A Phase locked staggered dielectric ridge array waveguide gas laser 失效
标题翻译：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。

47. 发明授权

US4577323A U Channel waveguide laser 失效
标题翻译： U通道波导激光器
公开(公告)号：US4577323A
公开(公告)日：1986-03-18
申请号：US529438
申请日：1983-09-06
申请人： Leon A. Newman , John T. Kennedy
发明人： Leon A. Newman , John T. Kennedy
IPC分类号： H01S3/03 , H01S3/0975 , H01S3/09
CPC分类号： H01S3/0975 , H01S3/0315
摘要： An improved RF-waveguide laser has a waveguide with an asymmetric cross section that provides improved suppression of high order modes and increased efficiency.
摘要翻译：改进的RF波导激光器具有具有不对称横截面的波导，其提供对高阶模式的改进的抑制并且提高效率。

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