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    Diode laser pumped solid state laser gain module
    101.
    发明授权
    Diode laser pumped solid state laser gain module 失效
    二极管激光泵浦固态激光增益模块

    公开(公告)号：US5790575A

    公开(公告)日：1998-08-04

    申请号：US683585

    申请日：1996-07-15

    Applicant: James M. Zamel ,  Robert Tinti ,  George M. Harpole

    Inventor： James M. Zamel ,  Robert Tinti ,  George M. Harpole

    IPC: H01S3/094 ,  H01S3/02 ,  H01S3/04 ,  H01S3/042 ,  H01S3/06 ,  H01S3/0941 ,  H01S3/16

    CPC classification number: H01S3/025 ,  H01S3/0941 ,  H01S3/0404 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/06 ,  H01S3/0606

    Abstract: A compact diode pumped solid state slab laser gain module 20 is described. The laser gain module comprises a ceramic housing 22, a laser gain medium 24 disposed in the laser cavity 22, and an optical pumping source. The housing is preferably composed of alumina which provides thermal and structural stability at high temperatures to maintain beam alignment and eliminates parasitic oscillations. The laser gain medium is preferably a slab of crystalline Nd:YAG. Diode laser arrays 48, 50 are provided to pump at least one side face 30, 32 of the laser gain medium. Each diode laser array 48, 50 is mounted to a manifold 40, 42 preferably formed of a plastic, non-contaminating material. The laser gain module comprises a simplified cooling distribution for cooling the laser gain medium to produce a substantially uniform temperature distribution between its top and bottom faces, and for cooling the diode laser arrays. The side faces 30, 32 are cooled by passing a coolant through flow channels 62, 64 defined between the laser gain medium and windows 50, 60 comprised of sapphire fritted to the housing.

    Abstract translation: 描述了紧凑型二极管泵浦固态板激光增益模块20。 激光增益模块包括陶瓷壳体22，设置在激光腔22中的激光增益介质24和光泵浦源。 壳体优选由氧化铝组成，其在高温下提供热和结构稳定性以保持光束对准并消除寄生振荡。 激光增益介质优选为晶体Nd：YAG的平板。 二极管激光器阵列48,50设置成泵送激光增益介质的至少一个侧面30,32。 每个二极管激光器阵列48,50安装到歧管40,42，优选地由塑料的非污染材料形成。 激光增益模块包括用于冷却激光增益介质以在其顶面和底面之间产生基本均匀的温度分布以及用于冷却二极管激光器阵列的简化的冷却分布。 侧面30,32通过使冷却剂通过限定在激光增益介质和由玻璃料玻璃料连接到壳体的蓝宝石窗口50,60之间的流动通道62,64而被冷却。

    High brightness solid-state laser with zig-zag amplifier
    103.
    发明授权
    High brightness solid-state laser with zig-zag amplifier 失效
    具有锯齿形放大器的高亮度固态激光器

    公开(公告)号：US5555254A

    公开(公告)日：1996-09-10

    申请号：US148758

    申请日：1993-11-05

    Applicant: Hagop Injeyan ,  Randall J. St. Pierre ,  Rodger C. Hilyard ,  George M. Harpole ,  Carolyn S. Hoefer

    Inventor： Hagop Injeyan ,  Randall J. St. Pierre ,  Rodger C. Hilyard ,  George M. Harpole ,  Carolyn S. Hoefer

    IPC: G02F1/35 ,  H01S3/04 ,  H01S3/042 ,  H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/109 ,  H01S3/23

    CPC classification number: H01S3/2316 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/0941 ,  H01S3/0407 ,  H01S3/0621 ,  H01S3/0625 ,  H01S3/08072 ,  H01S3/08095 ,  H01S3/10076 ,  H01S3/109

    Abstract: A solid-state laser architecture producing a beam of extremely high quality and brightness, including a master oscillator operating in conjunction with a zig-zag amplifier, an image relaying telescope and a phase conjugation cell. One embodiment of the laser architecture compensates for birefringence that is thermally induced in the amplifier, but injects linearly polarized light into the phase conjugation cell. Another embodiment injects circularly polarized light into the phase conjugation cell and includes optical components that eliminate birefringence effects arising in a first pass through the amplifier. Optional features permit the use of a frequency doubler assembly to provide output at twice optical frequencies, and an electro-optical switch or Faraday rotator to effect polarization angle rotation if the amplifier material can only be operated at one polarization. The zig-zag amplifier is cooled by flow of cooling liquid, preferably using longitudinal flow to minimize temperature gradients in a vertical direction, and has cooling channel seals disposed in dead zones that receive no light, to minimize optical damage to the seals. Light is input to the amplifier at a near normal angle of incidence, to minimize polarization by reflection and to permit a polarizer to be used to extract an output beam from the amplifier. Antireflective coatings on edges and on sides of the amplifier eliminate parasitic oscillations, and wedge-shaped windows provide uniform pumping by eliminating gaps between diode arrays.

    Abstract translation: 一种固态激光器架构，产生了极高质量和亮度的光束，包括与之前的Zig放大器，图像中继望远镜和相位共轭单元结合操作的主振荡器。 激光器结构的一个实施例补偿了在放大器中热感应的双折射，但是将线偏振光注入到相位共轭单元中。 另一实施例将圆偏振光注入到相位共轭单元中，并且包括消除在第一次通过放大器中产生的双折射效应的光学部件。 可选功能允许使用倍频器组件提供两倍光频率的输出，以及如果放大器材料只能在一个极化下操作，则电光开关或法拉第旋转器可实现偏振角旋转。 锯齿形放大器通过冷却液体的流动来冷却，优选地使用纵向流动以使垂直方向上的温度梯度最小化，并且具有设置在不受光的死区中的冷却通道密封件，以最小化对密封件的光学损伤。 光以接近的正常入射角输入到放大器，以通过反射使偏振最小化，并允许使用偏振器从放大器提取输出光束。 在放大器的边缘和侧面上的抗反射涂层消除了寄生振荡，楔形窗口通过消除二极管阵列之间的间隙来提供均匀的泵浦。

    High energy bursts from a solid state laser operated in the heat capacity limited regime
    104.
    发明授权
    High energy bursts from a solid state laser operated in the heat capacity limited regime 失效
    来自固态激光器的高能量突发在热容量有限的状态下运行

    公开(公告)号：US5526372A

    公开(公告)日：1996-06-11

    申请号：US286372

    申请日：1994-08-05

    Applicant: Georg Albrecht ,  E. Victor George ,  William F. Krupke ,  Walter Sooy ,  Steven B. Sutton

    Inventor： Georg Albrecht ,  E. Victor George ,  William F. Krupke ,  Walter Sooy ,  Steven B. Sutton

    IPC: H01S3/04 ,  H01S3/042 ,  H01S3/07 ,  H01S3/0941 ,  H01S3/16

    CPC classification number: H01S3/042 ,  H01S3/0404 ,  H01S3/0407 ,  H01S3/0604 ,  H01S3/0606 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/0941 ,  H01S3/1611 ,  H01S3/164

    Abstract: High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes.

    Abstract translation: 从以热容量限制方式运行的固体激光器产生高能量爆发。 代替冷却激光器，活性介质是热隔离的。 结果，活性介质会升温直到达到最高可接受的温度。 废热储存在活性介质中。 因此，激光器在运行期间可以放出的能量与其质量，活性介质的热容量以及运行中的温度差成正比。 热能操作的固体激光器的高能量突发能力连同没有用于活性介质的沉重的功耗稳定的冷却系统一起将使得各种应用成为可能。 或者，当激光器不工作时，在单独的顺序期间进行冷却。 工业应用包括新材料工作流程。

    Housing for a slab laser pumped by a close-coupled light source
    105.
    发明授权
    Housing for a slab laser pumped by a close-coupled light source 失效
    由紧耦合光源泵浦的板式激光器的外壳

    公开(公告)号：US5394427A

    公开(公告)日：1995-02-28

    申请号：US235689

    申请日：1994-04-29

    Applicant: Ted S. McMinn ,  Dana A. Marshall ,  Danny D. Meyer

    Inventor： Ted S. McMinn ,  Dana A. Marshall ,  Danny D. Meyer

    IPC: H01S3/02 ,  H01S3/06 ,  H01S3/04 ,  H01S3/044

    CPC classification number: H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0606

    Abstract: A housing for a slab laser gain media with a rectangular cross section which provides for a uniform flow of coolant over the slab top and bottom surfaces (18) and (20), while insulating the slab side surfaces (14) and (16). The slab gain media is bonded between two tabs at each end of the housing (48a, 48b, 50a, 50b). The slab top and bottom surfaces are made level with the tab top and bottom surfaces. Seals are placed on the continuous surface formed by the slab top and bottom surfaces and the tab top and bottom surfaces, thus sealing the ends of the housing, and also surrounding the coolant inlets and outlets. Windows (32) and (34) are then placed on top of each seal to form two thin cavities confining the coolant to flow across the slab top and bottom surfaces (18) and (20), and allowing for the close-coupling of either one or two pump sources, such as a two dimensional laser diode array assembly (58) and (60).

    Abstract translation: 用于板坯激光器的壳体获得具有矩形横截面的介质，其在板坯顶部和底部表面（18）和（20）之间提供均匀的冷却剂流，同时绝缘板坯侧表面（14）和（16）。 板坯增益介质结合在壳体（48a，48b，50a，50b）的每个端部处的两个突片之间。 平板顶部和底部表面与凸起顶部和底部表面平齐。 密封件放置在由板坯顶部和底部表面以及突出部顶部和底部表面形成的连续表面上，从而密封壳体的端部，并且还围绕冷却剂入口和出口。 然后将窗口（32）和（34）放置在每个密封件的顶部上以形成限制冷却剂流过板坯顶部和底部表面（18）和（20）的两个薄的空腔，并且允许两者之间的紧耦合 一个或两个泵浦源，例如二维激光二极管阵列组件（58）和（60）。

    Laser beam processing apparatus
    108.
    发明授权
    Laser beam processing apparatus 失效
    激光束处理装置

    公开(公告)号：US4945547A

    公开(公告)日：1990-07-31

    申请号：US358521

    申请日：1989-05-30

    Applicant: Benny A. Greene

    Inventor： Benny A. Greene

    IPC: H01S3/03 ,  H01S3/04 ,  H01S3/042 ,  H01S3/07 ,  H01S3/081 ,  H01S3/083 ,  H01S3/093 ,  H01S3/23

    CPC classification number: H01S3/2316 ,  H01S3/042 ,  H01S3/081 ,  H01S3/083 ,  H01S3/093 ,  H01S3/0407 ,  H01S3/07 ,  H01S3/0813 ,  H01S3/235

    Abstract: A laser beam processing apparatus includes a body providing a generally cylindrical bounding structure for a cavity. A window allows admission of an incident light beam into the cavity and emission of a laser beam from the cavity. A plurality of reflectors are arranged to sequentially reflect the light beam and/or light generated thereby along a light path which is generally polygonal as viewed from an end of the cavity. Laser material is disposed in the light path whereby the light generated by the light beam includes light which is derived by stimulated emission from the laser material.

    Abstract translation: 一种激光束处理设备包括一体为空腔提供大致圆柱形的界限结构。 窗口允许入射光入射到空腔中并从腔体发射激光束。 多个反射器布置成顺序地反射沿着从腔的端部观察的通常为多边形的光路产生的光束和/或光。 激光材料设置在光路中，由此光产生的光包括通过激光材料的受激发射导出的光。

    Solid state laser
    109.
    发明授权
    Solid state laser 失效
    固体激光

    公开(公告)号：US4935938A

    公开(公告)日：1990-06-19

    申请号：US271255

    申请日：1988-11-15

    Applicant: Andre Gressly ,  Andreas Bigler

    Inventor： Andre Gressly ,  Andreas Bigler

    IPC: H01S3/02 ,  H01S3/04 ,  H01S3/042 ,  H01S3/0915 ,  H01S3/092

    CPC classification number: H01S3/025 ,  H01S3/042 ,  H01S3/0931 ,  H01S3/0407

    Abstract: A laser (1) has its laser head (3) connected to its base (2) by hinges having a common axis (R) parallel to the laser beam axis (4a). When the lamp for energizing the laser rod must be replaced, the head (3) can be pivoted about the axis (R) to a position in which the lamp can easily be removed from its cavity and a new lamp fitted therein, the removal and fitting being accomplished by moving the lamps along their axis (5a).

    Abstract translation: 激光器（1）的激光头（3）通过具有与激光束轴（4a）平行的公共轴线（R）的铰链连接到其基座（2）。 当必须更换用于激励激光棒的灯时，头部（3）可以围绕轴线（R）枢转到灯可以容易地从其空腔移除的位置和安装在其中的新灯， 通过沿着它们的轴线（5a）移动灯来实现装配。

    Laser apparatus for minimizing wavefront distortion
    110.
    发明授权
    Laser apparatus for minimizing wavefront distortion 失效
    用于最小化波前失真的激光设备

    公开(公告)号：US4740983A

    公开(公告)日：1988-04-26

    申请号：US90288

    申请日：1987-08-28

    Applicant: Farzin H. Azad

    Inventor： Farzin H. Azad

    IPC: H01S3/16 ,  H01S3/04 ,  H01S3/06 ,  H01S3/093

    CPC classification number: H01S3/093 ,  H01S3/0407 ,  H01S3/0608 ,  H01S3/0612

    Abstract: Apparatus configured to minimize wavefront distortion of a coherent light beam is disclosed. The lasing medium of the laser apparatus has a hexagonal cross section and an internal surface with a circular cross section coaxial with a longitudinal axis of the lasing medium. The internal surface defines an interior space for receiving an optical pumping source. The external faces of the lasing medium are surrounded with a circumferential reflector and fluid coolant is flowed over the internal surface and external faces. The coherent light beam is passed through the lasing medium to follow a helical course totally internally reflecting off of the external faces.

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