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    Optical resonators with discontinuous phase elements
    11.
    发明授权
    Optical resonators with discontinuous phase elements 失效
    具有不连续相元件的光谐振器

    公开(公告)号：US06813286B1

    公开(公告)日：2004-11-02

    申请号：US09403472

    申请日：2001-01-05

    Applicant: Yochay Danziger ,  Asher A. Friesem ,  Ram Oron

    Inventor： Yochay Danziger ,  Asher A. Friesem ,  Ram Oron

    IPC: H01S310

    CPC classification number: H01S3/0804 ,  H01S3/0805 ,  H01S3/08068 ,  H01S3/08072 ,  H01S3/083 ,  H01S2301/20

    Abstract: A discontinuous phase element (86, 204) is disposed between the reflector (20, 23) elements of an optical resonator in order to suppress unwanted modes propagating within the cavity, and to preferentially allow the existence of preferred modes within the cavity. The discontinuous phase element (204) operates by producing sharp changes in the phase distribution of the undesirable modes, so that their propagation losses are sufficiently high prevent their build-up. This is achieved by introducing a discontinuous phase change to these modes at locations where they have high intensity. At the same time, the desired modes suffer 0 or 2&pgr; phase change, or have low intensity at the discontinuity, and so are unaffected by the discontinuous phase element. Such elements can be used in a single element or a double element configuration, and can be used in passive cavities or active cavities, such as lasers. In addition to being able to improve the output beam quality of a laser by encouraging output of the lowest order mode beam, they can also be used to improve the maximum power output of solid state lasers by encouraging the output of specific higher order mode beams, without limiting dynamic range of the laser. They can also be used to compensate for birefringence distortion in the gain medium.

    Abstract translation: 在光谐振器的反射器（20,23）元件之间设置不连续相位元件（86,204），以便抑制在空腔内传播的不想要的模式，并且优先地允许腔内存在优选模式。 不连续相元件（204）通过产生不期望的模式的相位分布的急剧变化来操作，使得它们的传播损耗足够高防止它们的积聚。 这是通过在它们具有高强度的位置处对这些模式引入不连续相变来实现的。 同时，期望的模式遭受0或2pi相位变化，或者在不连续处具有低强度，因此不受不连续相位元件的影响。 这种元件可以用于单个元件或双元件配置中，并且可以用于无源腔或主动空腔，例如激光器。 除了通过鼓励输出最低阶模式光束能够提高激光器的输出光束质量之外，还可以通过鼓励特定高阶模式光束的输出来改善固态激光器的最大功率输出， 而不限制激光的动态范围。 它们也可用于补偿增益介质中的双折射失真。

    Narrow band excimer or molecular fluorine laser having an output coupling interferometer
    13.
    发明申请
    Narrow band excimer or molecular fluorine laser having an output coupling interferometer 失效

    公开(公告)号：US20020122452A1

    公开(公告)日：2002-09-05

    申请号：US10098258

    申请日：2002-03-15

    Applicant: Lambda Physik AG.,

    Inventor： Juergen Kleinschmidt ,  Peter Lokai

    IPC: H01S003/22 ,  H01S003/223

    CPC classification number: H01S3/08068 ,  H01S3/0805 ,  H01S3/105 ,  H01S3/225

    Abstract: An excimer or molecular fluorine laser includes a discharge chamber filled with a gas mixture, multiple electrodes within the discharge chamber connected to a power supply circuit for energizing the gas mixture, and a resonator including the discharge chamber and a pair of resonator reflectors for generating an output laser beam. One of the resonator reflectors is an output coupling interferometer including a pair of opposing reflecting surfaces tuned to produce a reflectivity maximum at a selected wavelength for narrowing a linewidth of the output laser beam. One of the pair of opposing reflecting surfaces is configured such that the opposing reflecting surfaces of the interferometer have a varying optical distance therebetween over an incident beam cross-section which serves to suppress outer portions of the reflectivity maximum to reduce spectral purity. Preferably, this surface is non-planar, and may include a step, a recess or a raised or recessed curved portion of a quarter wavelength in height or depth, respectively.

    Laser
    14.
    发明授权
    Laser 失效
    激光

    公开(公告)号：US6144687A

    公开(公告)日：2000-11-07

    申请号：US148835

    申请日：1998-09-04

    Applicant: Paul E. Jackson

    Inventor： Paul E. Jackson

    IPC: H01S3/06 ,  H01S3/03 ,  H01S3/08 ,  H01S3/081 ,  H01S3/082

    CPC classification number: H01S3/0315 ,  H01S3/08059 ,  H01S3/08068 ,  H01S3/0818 ,  H01S3/082

    Abstract: A laser includes a lasing medium having a slab geometry, a waveguide arrangement either side of the slab, mirrors forming an unstable sub-resonator acting in a plane perpendicular to the waveguide, and a concave mirror arrangement acting on light incident on it launched from the waveguide, and thereby transformed from waveguide light to free space light, to redirect and retransform a portion of said light to be re-entrant waveguide light constituting the unstable sub-resonator round-trip self-replicating light. The unstable sub-resonator preferably includes a folding mirror to direct light towards the concave mirror, and the concave mirror is preferably partially transmissive.

    Abstract translation: 激光器包括具有平板几何形状的激光介质，板的任一侧的波导布置，形成在垂直于波导的平面中作用的不稳定子谐振器的反射镜，以及作用于从其上发射的光的凹面镜布置 波导，从而从波导光转变为自由空间光，以重定向和重新转换构成不稳定子谐振器往返自复制光的所述光的重新入射的波导光的一部分。 不稳定子谐振器优选地包括折射镜以将光引向凹面镜，并且凹面镜优选地是部分透射的。

    High-energy laser with multiple phased outputs
    15.
    发明授权
    High-energy laser with multiple phased outputs 失效
    具有多个相位输出的高能激光器

    公开(公告)号：US5631737A

    公开(公告)日：1997-05-20

    申请号：US617219

    申请日：1984-06-04

    Applicant: Frederic H. White, III

    Inventor： Frederic H. White, III

    IPC: H01S3/083 ,  H01S3/23

    CPC classification number: H01S3/2316 ,  H01S2301/203 ,  H01S3/08068 ,  H01S3/083

    Abstract: A high-energy laser 10 comprising a ring of lesser-powered laser modules 12,14,16 from each of which an output is taken to be projected so that they all arrive in phase on a distant target. To phase-lock the outputs of all the serial laser modules, the path lengths (l) of the laser modules are made equal, the path length around the large loop which includes all the laser modules is made an integral multiple of the laser-module path length, and at least two different feedback loops are employed.

    Abstract translation: 一种高能量激光器10，包括一个较小功率的激光模块12,14,16的环，每个激光模块的输出被投影，使得它们都全部到达远距离的目标。 为了相位锁定所有串行激光器模块的输出，激光模块的路径长度（l）相等，包括所有激光模块在内的大环路周围的路径长度成为激光模块的整数倍 路径长度，并且采用至少两个不同的反馈回路。

    Injection-controlled laser resonator
    16.
    发明授权
    Injection-controlled laser resonator 失效
    注射控制激光谐振器

    公开(公告)号：US5434882A

    公开(公告)日：1995-07-18

    申请号：US226589

    申请日：1994-04-12

    Applicant: Jim J. Chang

    Inventor： Jim J. Chang

    IPC: H01S3/08 ,  H01S3/23 ,  H01S3/082 ,  H01S3/098

    CPC classification number: H01S3/10092 ,  H01S3/08068 ,  H01S3/08081

    Abstract: A new injection-controlled laser resonator incorporates self-filtering and self-imaging characteristics with an efficient injection scheme. A low-divergence laser signal is injected into the resonator, which enables the injection signal to be converted to the desired resonator modes before the main laser pulse starts. This injection technique and resonator design enable the laser cavity to improve the quality of the injection signal through self-filtering before the main laser pulse starts. The self-imaging property of the present resonator reduces the cavity induced diffraction effects and, in turn, improves the laser beam quality.

    Abstract translation: 新的注射控制激光谐振器结合了自我滤波和自我成像特性以及高效的注射方案。 将低发散激光信号注入到谐振器中，这使得能够在主激光脉冲启动之前将注入信号转换成期望的谐振器模式。 这种注入技术和谐振器设计使激光腔能够在主激光脉冲启动之前通过自我滤波来提高注入信号的质量。 本谐振器的自成像特性降低了腔诱导的衍射效应，进而提高了激光束的质量。

    Laser apparatus
    17.
    发明授权
    Laser apparatus 失效
    激光设备

    公开(公告)号：US5392310A

    公开(公告)日：1995-02-21

    申请号：US124665

    申请日：1993-09-21

    Applicant: Jurgen Klein

    Inventor： Jurgen Klein

    IPC: H01S3/08 ,  H01S3/081 ,  H01S3/23

    CPC classification number: H01S3/2325 ,  H01S3/08 ,  H01S3/08068 ,  H01S3/081 ,  H01S3/2333 ,  H01S3/2366

    Abstract: A laser apparatus with a laser oscillator and a subsequently connected la intensifier which has an inlet region for the laser beam to be intensified coming from the laser oscillator and an outlet for the intensified laser beam and which is provided with a folding mirror that lies opposite to the inlet region for the laser beam to be intensified. The inlet region for the laser beam to be intensified is an opening in a further folding mirror which is located opposite to the other folding mirror. The outlet for the intensified laser beam likewise is an opening in one of the two folding mirrors. The opening width of the inlet opening and the outlet opening in relation to the mirror surface of the particular folding mirror is small. The cross section of the laser beam inside the laser intensifier is at least partially greater by a multiple than in the region of the inlet opening and outlet opening. In a region externally of the laser intensifier before respectively after the respective opening there is arranged a partially permeable respectively reflecting mirror so that the laser intensifier operates as a laser oscillator. The laser oscillator is integrated in the laser intensifier.

    Abstract translation: 一种具有激光振荡器和随后连接的激光增强器的激光装置，其具有用于来自激光振荡器的激光束的强化的入口区域和用于增强的激光束的出口，并且设置有与第 激光束的入口区域被加强。 用于激光束加强的入口区域是与另一个折叠镜相对的另一个折叠反射镜中的开口。 强化激光束的出口同样是两个折叠镜中的一个的开口。 入口和出口的相对于特定折叠镜的镜面的开口宽度小。 激光增强器内部的激光束的横截面至少部分地大于入口开口和出口的区域的倍数。 在分别在各个开口之后的激光增强器外部的区域中，布置有部分透射的反射镜，使得激光增强器作为激光振荡器工作。 激光振荡器集成在激光增强器中。

    Nickel-cobalt-boron alloy, implement, plating solution and method for making same
    18.
    发明授权
    Nickel-cobalt-boron alloy, implement, plating solution and method for making same 失效
    镍钴合金，工具，电镀液及其制造方法

    公开(公告)号：US5314608A

    公开(公告)日：1994-05-24

    申请号：US45977

    申请日：1993-04-09

    Applicant: Luis X. Caballero

    Inventor： Luis X. Caballero

    IPC: C22C19/00 ,  C25D1/04 ,  C25D3/56 ,  C25D5/26 ,  C25D5/28 ,  C25D5/30 ,  C25D15/00 ,  G02B5/08 ,  H01L21/288 ,  H01S3/08

    CPC classification number: H01S3/08068 ,  C25D3/562 ,  G02B5/08 ,  Y10S428/935 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12993

    Abstract: A dense, smooth, ductile, hard, highly reflective, corrosion-resistant, temperature resistant, and wear-resistant crystalline alloy of nickel, cobalt and boron. The alloy is epitaxially electrodeposited on an activated substrate using a pulsed square wave current. The epitaxial deposition occurs in an electrolytic bath containing nickel ions, cobalt ions, complexing agents, and an amino borane compound at a moderately low pH level and moderate temperature. An insoluble, solid catalyst, preferably palladium, causes the alloy to diffuse into the surface of the substrate and become bonded by a polar-covalent bond to it. Implements coated with the alloy, as well as plating solutions and methods for making the alloy are also disclosed.

    Abstract translation: 密实，光滑，延展，硬，高反射，耐腐蚀，耐温，耐磨和耐磨的镍，钴和硼晶体合金。 使用脉冲方波电流将合金外延电沉积在激活的基板上。 外延沉积发生在含有镍离子，钴离子，络合剂和氨基甲烷化合物的电解槽中，中等pH值和中等温度下。 不溶性固体催化剂，优选钯，导致合金扩散到基底表面，并通过极性共价键与其结合。 还公开了涂覆有合金的实施例，以及用于制造合金的电镀液和方法。

    Diffraction grating driven linear frequency chirped laser
    19.
    发明授权
    Diffraction grating driven linear frequency chirped laser 失效
    衍射光栅驱动线性啁啾激光器

    公开(公告)号：US5283795A

    公开(公告)日：1994-02-01

    申请号：US871877

    申请日：1992-04-21

    Applicant: David Fink

    Inventor： David Fink

    IPC: H01S3/08 ,  H01S3/1055 ,  H01S3/13

    CPC classification number: H01S3/08009 ,  H01S2301/08 ,  H01S3/08068 ,  H01S3/1055

    Abstract: The present invention provides various embodiments of laser systems for generating "chirp" signals. In the broadest sense, a diffraction grating is placed within a laser cavity on the face of a carrier and the motion of the carrier in its own plane causes the laser to chirp. Typically, the diffraction grating is placed in the end-reflector position of the optical path of the resonant cavity associated with the laser. By putting the diffraction grating on the outer peripheral rim of a wheel and rotating the wheel, a sequence of either up-chirp or down-chirp signals can be generated continuously. Similarly, the desired "chirped" signals can be generated by using a diffraction grating oriented radially on the face of a rotating wheel. The system also contemplates the simultaneous generation of both an up-chirp signal of one polarization and a down-chirp signal of an orthogonal polarization by using a pair of lasers and a single wheel carrying the diffraction grating on either its outer peripheral rim or its face disposed in the end-reflector positions of the lasers for simultaneously generating both the up-chirp and down-chirp signals. An optical system including a reflective mirror, a one-half waveplate, and a polarizing beamsplitter are provided at the output of the two laser system for combining the up-chirp signal and down-chirp signal for simultaneous outputting.

    Abstract translation: 本发明提供了用于产生“啁啾”信号的激光系统的各种实施例。 在最广泛的意义上，衍射光栅被放置在载体表面上的激光腔内，并且载体在其自身平面中的运动导致激光器啁啾。 通常，衍射光栅被放置在与激光器相关联的谐振腔的光路的端反射器位置。 通过将衍射光栅放置在车轮的外周边缘并旋转车轮，可以连续生成上升啁啾或下降线性调频信号的序列。 类似地，可以通过使用在旋转轮的表面上径向定向的衍射光栅来产生期望的“啁啾”信号。 该系统还考虑通过使用一对激光器和在其外周缘或其表面上承载衍射光栅的单个轮轮来同时产生一个极化的向上啁啾信号和正交偏振的向下啁啾信号 设置在激光器的端反射器位置，以同时产生上啁啾和下啁啾信号。 在两个激光系统的输出处提供包括反射镜，一半波片和偏振分束器的光学系统，用于组合用于同时输出的上升线性调频脉冲信号和下拉线性调频信号。

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