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16 条记录 (耗时 0.021 秒)

    Laser amplifier
    6.
    发明授权
    Laser amplifier 失效
    激光放大器

    公开(公告)号：US5021742A

    公开(公告)日：1991-06-04

    申请号：US246445

    申请日：1988-09-19

    申请人： Jonah H. Jacob

    发明人： Jonah H. Jacob

    IPC分类号： H01S3/081 ,  H01S3/23

    CPC分类号： H01S3/2341 ,  H01S3/081 ,  H01S3/2333 ,  H01S3/2383

    摘要： This invention relates to a laser amplifier which achieves substantially enhanced gains by diverging the laser beam in a gain medium having a substantially rectangular shape. In particular, at least one laser beam is passed through a lens or other suitable means to cause it to diverge at a predetermined angle and the diverging beam or beams are caused to pass through the gain medium in a manner such that a beam makes only a single pass through any section of the medium, with the total number of passes through the medium by the beam(s) applied to the medium being an even number. The angle at which the beam diverges should be such as to maintain a near optimum laser power extraction efficiency for the beam. If a single beam is supplied to the medium, it makes an even number of passes through the medium with mirrors, prisms, or other suitable means being provided as the beam exits the medium after each pass except the last pass to fold the beam back into the medium for a subsequent pass. The invention operates in a similar manner where two or more laser beams are applied to the medium.

    摘要翻译： 本发明涉及一种激光放大器，其通过在具有大致矩形形状的增益介质中使激光束发散来实现增强的增益。 特别地，至少一个激光束通过透镜或其他合适的装置以使其以预定角度发散，并且使发散光束或光束以这样的方式通过增益介质，使得光束仅使 单次通过介质的任何部分，其中施加到介质上的光束的通过介质的总数是偶数。 光束发散的角度应该是保持光束接近最佳的激光功率提取效率。 如果单个光束被提供给介质，则通过反射镜，棱镜或其他合适的装置，通过介质进行偶数次通过，因为每次通过之后光束离开介质，除了最后一次将光束折回到 用于随后通过的介质。 本发明以类似的方式操作，其中两个或更多个激光束被施加到介质上。

    High energy electron beam driven laser
    7.
    发明授权
    High energy electron beam driven laser 失效
    高能电子束驱动激光器

    公开(公告)号：US4211983A

    公开(公告)日：1980-07-08

    申请号：US901600

    申请日：1978-05-01

    申请人： Jack D. Daugherty ,  Jonah H. Jacob ,  Joseph A. Mangano

    发明人： Jack D. Daugherty ,  Jonah H. Jacob ,  Joseph A. Mangano

    IPC分类号： H01S3/097

    CPC分类号： H01S3/09707

    摘要： Improved electron beam driven gas laser method and apparatus with the achievement of high single pulse energies therefore enabled by establishment of a magnetic field in a direction substantially parallel to the desired direction of electron beam propagation into a gas. The applied magnetic field is made substantially uniform and sized to exceed that of the self induced magnetic field of the current established by the electron beam, alone or in combination with a discharge current (optionally) established in the gas.

    摘要翻译： 因此，通过在基本上平行于电子束传播到气体的期望方向的方向上建立磁场来实现改进的电子束驱动气体激光方法和实现高单脉冲能量的装置。 所施加的磁场被制成基本上均匀且尺寸超过由电子束建立的电流的自身感应磁场的单独或与在气体中建立的放电电流（可选地）组合的尺寸。

    Window construction for a particle accelerator
    10.
    发明授权
    Window construction for a particle accelerator 失效
    窗口构造的粒子加速器

    公开(公告)号：US5235239A

    公开(公告)日：1993-08-10

    申请号：US712200

    申请日：1991-06-07

    申请人： Jonah H. Jacob ,  Allen M. Flusberg ,  Barbara J. Hughey ,  Ruth Shefer ,  Robert Klinkowstein

    发明人： Jonah H. Jacob ,  Allen M. Flusberg ,  Barbara J. Hughey ,  Ruth Shefer ,  Robert Klinkowstein

    IPC分类号： G21K1/10 ,  G21K5/04

    CPC分类号： G21K5/04 ,  G21K1/10

    摘要： Window constructions for use in particle accelerators to separate an evacuated accelerator beam chamber from a gas or liquid filled target area, which window structure enhances cooling of the foil covering the window opening and reduces stresses on the foil. For preferred embodiments, the window opening is shaped and dimensioned to provide high length-to-width aspect ratio and a rectangular shape with rounded corners. The openings should generally be as narrow as possible while still being wide enough to assure efficient transmission of the ion beam. Stresses in the foil is reduced by providing controlled bowing of the portions of the foil covering the window. This may be accomplished by providing some slack in the foil, at least in one dimension, but is preferably accomplished by pressing the foil between mating curved surfaces selectively extending from the edges of the window openings, resulting in the desired bow in the foil in the window area. With a rectangular opening, the bow is preferably a generally cylindrical bow about an axis parallel to the length dimension of the window. A generally spherical bow may also be utilized. A plurality of adjacent generally rectangular openings separated by struts are also utilized for some embodiments.

    摘要翻译： 窗口结构用于粒子加速器以将抽真空的加速器光束室与气体或液体填充的目标区域分离，该窗口结构增强了覆盖窗口的箔的冷却并减少了箔上的应力。 对于优选实施例，窗口的形状和尺寸被设计成提供高的长宽比纵横比和具有圆角的矩形形状。 开口通常应尽可能窄，同时仍然足够宽以确保离子束的有效传输。 通过提供覆盖窗户的箔的部分的受控弯曲来减少箔中的应力。 这可以通过在箔中至少在一个维度上提供一些松弛来实现，但是优选地通过在从窗口的边缘选择性地延伸的匹配弯曲表面之间压制箔来实现箔，从而在箔中的期望的弓 窗口区域。 对于矩形开口，弓形件优选地是围绕平行于窗口的长度尺寸的轴线的大致圆柱形的弓形。 也可以使用大致球形的弓形。 通过支柱分开的多个相邻的大致矩形的开口也用于一些实施例。