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    Solid-state laser with spatially-tailored active ion concentration using valence conversion with surface masking and method
    3.
    发明申请
    Solid-state laser with spatially-tailored active ion concentration using valence conversion with surface masking and method 有权
    具有空间定制的活性离子浓度的固体激光器，其使用经表面掩蔽和方法的价态转换

    公开(公告)号：US20070242714A1

    公开(公告)日：2007-10-18

    申请号：US11404338

    申请日：2006-04-14

    申请人： David Sumida ,  Robert Byren ,  Michael Ushinsky

    发明人： David Sumida ,  Robert Byren ,  Michael Ushinsky

    IPC分类号： H01S3/17

    CPC分类号： H01S3/0612 ,  H01S3/061 ,  H01S3/1618 ,  H01S3/1643

    摘要： A material having a surface and a dopant in the material distributed whereby the material has a spatially variant optical flux density profile. In accordance with the invention, tailored non-uniform gain profiles within a Yb:YAG laser component (rod, slab, disc, etc.) are achieved by a spatial material modification in the spatially masked pre-forms. High temperature-assisted reduction leads to the coordinate-dependent gain profiles, which are controlled by the topology of the deposited solid masks. The gain profiles are obtained by reducing the charge state of the laser-active trivalent Yb3+ ions into inactive divalent Yb2+ ions. This valence conversion process is driven by mass transport of ions and oxygen vacancies. These processes, in turn, affect the dopant distribution throughout the surface and bulk laser crystal. By reducing proportionally more Yb3+ ions at the unmasked areas of component, than in the masked areas, the coordinate-dependent or spatially-controlled gain profiles are achieved. Preferred masking materials are high temperature ceramic glazes and glasses. The masking includes the fabrication of frit, mixing this frit with de-ionized water to form slurry, deposition of the slurry on the surface of laser component or pre-form, and a heat treatment (firing) of the deposited layer. The invention can be used for the fabrication of laser rods, slabs, etc. with various concentrations and spatial localizations of dopants.

    摘要翻译： 在材料中具有表面和掺杂剂的材料被分配，由此材料具有空间上不同的光通量密度分布。 根据本发明，Yb：YAG激光器部件（棒，板，盘等）中的定制的不均匀增益分布通过在空间掩蔽的预成型件中的空间材料修改来实现。 高温辅助还原导致坐标依赖增益曲线，其由沉积的固体掩模的拓扑结构来控制。 通过将激光活性三价Yb 3+ +离子的电荷状态降低到无活性的二价Yb 2+离子中来获得增益曲线。 该价电子转化过程由离子和氧空位的质量传递驱动。 这些过程又影响整个表面和体激光晶体的掺杂剂分布。 通过在组件的未屏蔽区域比在掩蔽区域中成比例地减少更多的Yb + 3 + +离子，实现了坐标依赖或空间控制的增益曲线。 优选的掩蔽材料是高温陶瓷釉料和玻璃。 掩模包括制造玻璃料，将该玻璃料与去离子水混合以形成浆料，将浆料沉积在激光部件的表面上或预成型，以及沉积层的热处理（烧制）。 本发明可用于制造具有各种浓度和掺杂剂的空间定位的激光棒，板坯等。

    Time-reversed photoacoustic system and uses thereof
    4.
    发明申请
    Time-reversed photoacoustic system and uses thereof 失效
    时间反转光声系统及其用途

    公开(公告)号：US20050210982A1

    公开(公告)日：2005-09-29

    申请号：US10809237

    申请日：2004-03-24

    申请人： David Pepper ,  Gilmore Dunning ,  David Sumida

    发明人： David Pepper ,  Gilmore Dunning ,  David Sumida

    IPC分类号： G01H9/00 ,  G01N29/06 ,  G01N29/22 ,  G01N29/24

    CPC分类号： G01H9/00

    摘要： A remote mass is excited with one or more beams, and the surface vibrations of the excited mass are detected with one or more laser vibrometers. Each vibrometer generates a signal indicative of the surface vibrations which is stored, reversed in time, and applied to modulate an exciter beam that is then impinged onto the mass.

    摘要翻译： 用一个或多个梁激发远程质量块，并用一个或多个激光振动计检测激发体的表面振动。 每个振动计产生指示表面振动的信号，其被存储，及时反转，并且用于调制激发器束，该激发器束然后撞击到质量块上。

    TIME-REVERSED PHOTOACOUSTIC SYSTEM AND USES THEREOF
    5.
    发明申请
    TIME-REVERSED PHOTOACOUSTIC SYSTEM AND USES THEREOF 失效
    时间反射的光电系统及其用途

    公开(公告)号：US20050210985A1

    公开(公告)日：2005-09-29

    申请号：US10966698

    申请日：2004-10-14

    申请人： David Pepper ,  Gilmore Dunning ,  David Sumida

    发明人： David Pepper ,  Gilmore Dunning ,  David Sumida

    IPC分类号： G01H9/00 ,  G01N29/06 ,  G01N29/22 ,  G01N29/24

    CPC分类号： G01H9/00

    摘要： A remote mass is excited with one or more beams, and the surface vibrations of the excited mass are detected with one or more laser vibrometers. Each vibrometer generates a signal indicative of the surface vibrations which is stored, reversed in time, and applied to modulate an exciter beam that is then impinged onto the mass.

    摘要翻译： 用一个或多个梁激发远程质量块，并用一个或多个激光振动计检测激发体的表面振动。 每个振动计产生指示表面振动的信号，其被存储，及时反转，并且用于调制激发器束，该激发器束然后撞击到质量块上。

    Numerical aperture optimization using doped cladding layers
    6.
    发明申请
    Numerical aperture optimization using doped cladding layers 失效
    使用掺杂包层的数值孔径优化

    公开(公告)号：US20050008051A1

    公开(公告)日：2005-01-13

    申请号：US10846146

    申请日：2004-05-14

    申请人： David Sumida

    发明人： David Sumida

    IPC分类号： G02B6/10 ,  H01S3/042 ,  H01S3/06 ,  H01S3/063 ,  H01S3/16 ,  H01S3/30

    CPC分类号： H01S3/0632 ,  G02B6/102 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/1618 ,  H01S3/1643

    摘要： A method and apparatus for optimizing the numerical aperture (NA) of a laser active core. The laser active core comprises at least a first and second cladding pair. The first and second cladding pair have at least one NA value. At least one of the first and second cladding pair is doped with a dopant to change the first NA value to a second NA value.

    摘要翻译： 一种用于优化激光活性芯的数值孔径（NA）的方法和装置。 激光有源芯包括至少第一和第二包层对。 第一和第二包层对具有至少一个NA值。 第一和第二包层对中的至少一个掺杂有掺杂剂以将第一NA值改变为第二NA值。