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135 条记录 (耗时 0.035 秒)

    Optically pumped bistable laser
    51.
    发明授权
    Optically pumped bistable laser 失效
    光泵浦双稳态激光器

    公开(公告)号：US5544192A

    公开(公告)日：1996-08-06

    申请号：US405539

    申请日：1995-03-16

    申请人： Thomas Pfeiffer

    发明人： Thomas Pfeiffer

    IPC分类号： G02F3/02 ,  H01S3/067 ,  H01S3/102 ,  H01S3/16 ,  H01S3/09

    CPC分类号： H01S3/067 ,  H01S3/1022 ,  G02F3/026 ,  H01S3/06791 ,  H01S3/1608 ,  Y10S372/703

    摘要： An optically pumped bistable laser (LAS) with an active laser condition and an excited inactive condition is presented. The bistable laser (LAS) comprises an erbium-doped fiber (ER), a resonator (RES), a pumping light source (PUMP), and optical isolator (ISO), a wavelength-dependent coupler (WDM) and an asymmetrical fiber coupler (FC). Excitation from the excited condition is created by pumping light from the pumping light source (PUMP) into the erbium-doped fiber (ER), to place the bistable laser into the excited inactive condition. Optical pulses, which are coupled in through input (IN), activate the bistable laser (LAS) and enable it to operate both as a pulse generator and a trigger circuit, as a function of pulse duration and/or pulse frequency.

    摘要翻译： 提出了一种具有激光激光条件和激发非激活状态的光泵浦双稳态激光器（LAS）。 双稳态激光器（LAS）包括掺铒光纤（ER），谐振器（RES），泵浦光源（PUMP）和光隔离器（ISO），波长依赖耦合器（WDM）和非对称光纤耦合器 （FC）。 通过将来自泵浦光源（PUMP）的光泵浦到掺铒光纤（ER）中来产生激发条件的激发，以将双稳态激光器置于激发的非激活状态。 通过输入（IN）耦合的光脉冲激活双稳态激光器（LAS），并使其能够作为脉冲发生器和触发电路作为脉冲持续时间和/或脉冲频率的函数进行操作。

    Optical amplifier
    52.
    发明授权
    Optical amplifier 失效
    光放大器

    公开(公告)号：US5499135A

    公开(公告)日：1996-03-12

    申请号：US323239

    申请日：1994-10-14

    申请人： Rolf Heidemann ,  Thomas Pfeiffer ,  Manfred Kaiser

    发明人： Rolf Heidemann ,  Thomas Pfeiffer ,  Manfred Kaiser

    IPC分类号： H01S3/094 ,  H01S3/0941 ,  H01S3/30 ,  G02B6/26

    CPC分类号： H01S3/094003 ,  H01S3/0941 ,  H01S3/094011 ,  H01S3/094076 ,  H01S3/09408

    摘要： Known optical amplifiers, which are used in a light transmission path to amplify the light signals to be transmitted, have the disadvantage that the semiconductor lasers, used as pump lasers therein, are very sensitive to feedback.According to the invention, the operating current of such pump lasers (4) is modulated at a high frequency, which causes the pump laser to operate in a multi-mode, thereby making it insensitive to feedback. For example, the operating current is DC, on which AC is superimposed.In the event the optical amplifier has two pump lasers, their operating current is also modulated. Both pump lasers are then advantageously alternately switched on and off at a sufficiently high switching frequency, which also prevents reciprocal interference.

    摘要翻译： 用于光传输路径以放大要传输的光信号的已知光放大器的缺点在于，用作其中的激光器的半导体激光器对反馈非常敏感。 根据本发明，这种泵浦激光器（4）的工作电流以高频调制，这使得泵浦激光器以多模式操作，从而使其对反馈不敏感。 例如，工作电流为DC，叠加AC。 在光放大器有两个泵浦激光器的情况下，它们的工作电流也被调制。 两个泵浦激光器有利地以足够高的开关频率交替地接通和关断，这也防止了相互干扰。

    Process for making electrically conductive patterns
    53.
    发明授权
    Process for making electrically conductive patterns 失效
    制作导电图案的工艺

    公开(公告)号：US5296259A

    公开(公告)日：1994-03-22

    申请号：US969542

    申请日：1992-10-30

    申请人： Dietmar Dudek ,  Thomas Pfeiffer

    发明人： Dietmar Dudek ,  Thomas Pfeiffer

    IPC分类号： G03F7/28 ,  H05K1/03 ,  H05K1/09 ,  H05K3/10 ,  H05K3/38 ,  B05D1/00

    CPC分类号： H05K3/102 ,  G03F7/28 ,  H05K1/0306 ,  H05K2203/0525 ,  H05K2203/1131 ,  H05K3/38

    摘要： A process for making an electrically conductive pattern on a substrate comprising coating the substrate with a solution of salts containing at least one supplementary element, drying and heat treating the salt coating at a temperature lower than the temperature at which oxides form from the salts, then forming a metal conductive pattern on the heat treated supplementary element coating. This process can be used to make printed circuits on ceramic substrates which are useful in hybrid circuits, for example.

    摘要翻译： 一种在基材上制造导电图案的方法，包括用含有至少一种补充元素的盐的溶液涂覆基材，在低于盐形成氧化物的温度的温度下干燥和热处理盐包衣，然后 在热处理的辅助元件涂层上形成金属导电图案。 该方法可以用于制造例如在混合电路中有用的陶瓷基板上的印刷电路。

    Process for making electrically conductive patterns
    54.
    发明授权
    Process for making electrically conductive patterns 失效
    制造电导型图案的工艺

    公开(公告)号：US5110384A

    公开(公告)日：1992-05-05

    申请号：US510316

    申请日：1990-04-17

    申请人： Dietmar Dudek ,  Thomas Pfeiffer

    发明人： Dietmar Dudek ,  Thomas Pfeiffer

    IPC分类号： G03F7/28 ,  H01B1/02 ,  H01B13/00 ,  H05K1/03 ,  H05K1/09 ,  H05K3/10 ,  H05K3/38

    CPC分类号： H05K3/102 ,  G03F7/28 ,  H05K1/0306 ,  H05K2201/0347 ,  H05K2203/0525 ,  H05K2203/1131 ,  H05K3/38

    摘要： A process for making an electrically conductive pattern on a substrate including forming a patterned adhesive layer on the substrate, applying a conductive metal powder to the adhesive layer, and in a second coating pass, applying a powder containing supplementary elements to the pattern. The patterned substrate is fired to volatilize theadhesive layer and sinter the powders. This process can be used to make printed circuits on ceramic substrates which are useful in hybrid circuits, for example.

    摘要翻译： 一种在基板上形成导电图案的方法，包括在基板上形成图案化的粘合剂层，将导电金属粉末施加到粘合剂层上，并在第二涂覆过程中，向该图案施加含有补充元素的粉末。 烧制图案化的基底以使粘附层挥发并烧结粉末。 该方法可以用于制造例如在混合电路中有用的陶瓷基板上的印刷电路。

    PRESSURE-CORRECTED DENSITY OF A FLUID
    59.
    发明申请
    PRESSURE-CORRECTED DENSITY OF A FLUID 审中-公开
    流体的压力校正密度

    公开(公告)号：US20130239671A1

    公开(公告)日：2013-09-19

    申请号：US13420929

    申请日：2012-03-15

    申请人： Adriaan Gisolf ,  Peter S. Hegeman ,  Vladislav Achourov ,  Thomas Pfeiffer ,  Michael O'Keefe

    发明人： Adriaan Gisolf ,  Peter S. Hegeman ,  Vladislav Achourov ,  Thomas Pfeiffer ,  Michael O'Keefe

    IPC分类号： E21B49/00

    CPC分类号： E21B49/08 ,  E21B47/10 ,  E21B49/10

    摘要： This disclosure is drawn to methods, systems, devices and/or apparatus related to determining the density of a fluid. Specifically, the disclosed methods, systems, devices and/or apparatus relate to determining the density of a fluid in situ (e.g., in a downhole tool) under the Earth's surface using extrapolation and/or interpolation technique(s). Some example methods may include obtaining a fluid sample from a formation, measuring, in a downhole tool, a plurality of density values of the fluid sample, each density value being measured at a distinct pressure level within a pressure range, and extrapolating and/or interpolating the plurality of density values of the fluid sample to a pressure level different that the distinct pressure in which the density value is measured. Some example methods may include tuning one or more Equation-of-State model based, at least in part, on the density values.

    摘要翻译： 本公开涉及与确定流体密度相关的方法，系统，装置和/或装置。 具体地，所公开的方法，系统，装置和/或装置涉及使用外插和/或内插技术来确定地球表面下的原位流体的密度（例如，在井下工具中）。 一些示例性方法可以包括从地层获得流体样品，在井下工具中测量流体样品的多个密度值，每个密度值在压力范围内在不同的压力水平下测量，并且外推和/或 将流体样本的多个密度值内插到与测量密度值的不同压力不同的压力水平。 一些示例性方法可以包括至少部分地基于密度值调整一个或多个状态方程模型。