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    Apparatus and method for spectral narrowing of high power diode laser arrays
    1.
    发明授权
    Apparatus and method for spectral narrowing of high power diode laser arrays 失效
    大功率二极管激光器阵列的光谱变窄的装置和方法

    公开(公告)号：US5793784A

    公开(公告)日：1998-08-11

    申请号：US814096

    申请日：1997-03-10

    申请人： Mark Wagshul ,  Eli Miron

    发明人： Mark Wagshul ,  Eli Miron

    IPC分类号： H01S5/40 ,  H01S3/10

    CPC分类号： H01S5/4062 ,  H01S5/141 ,  H01S5/4025

    摘要： An apparatus for spectral narrowing of high power diode laser arrays includes a high power diode laser array configured for production of an output light beam, a collimator configured for collimation of the output light beam, and a half-wave plate and polarizing beamsplitter positioned to receive the output light beam and to separate it into a feedback beam and a usable beam. The apparatus further includes an interference filter positioned to receive the feedback beam and form it into a filtered feedback beam. The filter has a narrow passband about a desired wavelength. The apparatus still further includes a cat's eye reflector to receive the feedback beam, direct it through the interference filter, and couple the filtered feedback beam into the diode laser array. A method for spectral narrowing of high-power diode laser arrays includes the steps of collimating the light output from the high power diode laser array; passing it through a beamsplitter to obtain feedback and usable beams; passing the feedback beam through an interference filter to form a filtered feedback beam; and coupling the filtered feedback beam back into the diode laser array.

    摘要翻译： 用于大功率二极管激光器阵列的频谱变窄的装置包括：配置用于产生输出光束的大功率二极管激光器阵列，被配置用于准直输出光束的准直器;以及定位成接收的半波片和偏振分束器 输出光束并将其分离成反馈光束和可用光束。 该装置还包括一个干涉滤波器，定位成接收反馈光束并将其形成滤波反馈光束。 滤波器具有围绕所需波长的窄通带。 该装置还包括猫眼反射器以接收反馈光束，将其引导通过干涉滤光器，并将经滤波的反馈光束耦合到二极管激光器阵列中。 一种用于大功率二极管激光器阵列的频谱变窄的方法包括准直来自大功率二极管激光器阵列的光输出的步骤; 将其通过分束器以获得反馈和可用的光束; 使反馈光束通过干涉滤光器以形成滤波反馈光束; 并将经滤波的反馈光束耦合回二极管激光器阵列。

    Method and system for operating an atomic clock with alternating-polarization light
    3.
    发明申请
    Method and system for operating an atomic clock with alternating-polarization light 有权
    用交流偏振光操作原子钟的方法和系统

    公开(公告)号：US20050212607A1

    公开(公告)日：2005-09-29

    申请号：US11052261

    申请日：2005-02-07

    申请人： William Happer ,  Yuan-Yu Jau ,  Nicholas Kuzma ,  Eli Miron ,  Amber Post ,  Michael Romalis

    发明人： William Happer ,  Yuan-Yu Jau ,  Nicholas Kuzma ,  Eli Miron ,  Amber Post ,  Michael Romalis

    IPC分类号： H03L7/26

    CPC分类号： G04F5/14 ,  G01R33/26 ,  G04F5/145 ,  H03L7/26

    摘要： The present invention provides a method and apparatus for increasing the intensity of coherent population trapping (CPT) resonances, used in atomic clocks and magnetometers, by pumping the atoms with light of alternating polarization. Pumping with such light, characterized by a photon spin vector that alternates in direction at a hyperfine frequency of the atoms at the location of the atoms, is referred to as push-pull pumping. In one embodiment of the system of the present invention, alkali-metal vapor is pumped with alternating circular-polarization D1 laser light that is intensity modulated at appropriate resonance frequencies, thereby exciting CPT resonances, which can be observed as increase in the mean transmittance of the alkali-metal vapor. These resonances are substantially enhanced due to an optically-induced concentration of atoms in the resonant energy sublevels.

    摘要翻译： 本发明提供了一种用于通过用交替极化的光泵浦原子来增加在原子钟和磁力计中使用的相干群体捕获（CPT）共振的强度的方法和装置。 用这样的光泵浦，其特征在于在原子位置处的原子的超精细频率在方向上交替的光子自旋矢量被称为推挽泵浦。 在本发明的系统的一个实施例中，碱金属蒸汽用交替的圆偏振D1激光泵浦，其以适当的共振频率进行强度调制，从而激发CPT共振，这可以被观察为随着平均透射率的增加 碱金属蒸气。 由于谐振能量子层中的原子的光学诱导浓度，这些共振显着增强。

    High volume hyperpolarizer for spin-polarized noble gas
    4.
    发明授权
    High volume hyperpolarizer for spin-polarized noble gas 失效
    用于自旋极化惰性气体的大体积超极化器

    公开(公告)号：US5642625A

    公开(公告)日：1997-07-01

    申请号：US622863

    申请日：1996-03-29

    申请人： Gordon D. Cates, Jr. ,  Bastiaan Driehuys ,  William Happer ,  Hunter Middleton ,  Eli Miron ,  Brian Saam ,  Daniel Walter

    发明人： Gordon D. Cates, Jr. ,  Bastiaan Driehuys ,  William Happer ,  Hunter Middleton ,  Eli Miron ,  Brian Saam ,  Daniel Walter

    IPC分类号： F25J1/00 ,  A61B5/055 ,  A61K49/18 ,  G01R33/28 ,  B01D8/00

    CPC分类号： G01R33/282 ,  A61K49/1815 ,  Y10S62/919 ,  Y10S62/925

    摘要： A method and apparatus for hyperpolarization of flowing noble gases is disclosed, including means for hyperpolarization of noble gases in a continuous flow arrangement. Noble gases such as xenon-129 and helium-3 can be hyperpolarized using the disclosed method and apparatus. Preferably, the noble gas is hyperpolarized via spin exchange between atoms of the noble gas and an alkali metal such as rubidium. Also, a method and apparatus for accumulation and/or storage of hyperpolarized noble gases in a continuous flow arrangement is provided. The method and apparatus enable large scale production, storage, and usage of hyperpolarized noble gases for numerous purposes, including imaging of human and animal subjects through magnetic resonance imaging (MRI) techniques.

    摘要翻译： 公开了一种用于流动惰性气体的超极化的方法和装置，包括用于连续流动布置中的惰性气体的超极化的装置。 使用所公开的方法和装置，诸如氙129和氦-3的贵重气体可以被超极化。 优选地，惰性气体通过惰性气体的原子和诸如铷的碱金属之间的自旋交换而被超极化。 此外，提供了一种用于在连续流动布置中积聚和/或储存超极化惰性气体的方法和装置。 该方法和装置能够用于许多目的的超极化惰性气体的大规模生产，储存和使用，包括通过磁共振成像（MRI）技术对人类和动物受试者的成像。

    Method and system for operating an atomic clock with alternating-polarization light
    5.
    发明授权
    Method and system for operating an atomic clock with alternating-polarization light 有权
    用交流偏振光操作原子钟的方法和系统

    公开(公告)号：US07102451B2

    公开(公告)日：2006-09-05

    申请号：US11052261

    申请日：2005-02-07

    申请人： William Happer ,  Yuan-Yu Jau ,  Nicholas N. Kuzma ,  Eli Miron ,  Amber B. Post ,  Michael V. Romalis

    发明人： William Happer ,  Yuan-Yu Jau ,  Nicholas N. Kuzma ,  Eli Miron ,  Amber B. Post ,  Michael V. Romalis

    IPC分类号： H03B17/00 ,  H01S1/06

    CPC分类号： G04F5/14 ,  G01R33/26 ,  G04F5/145 ,  H03L7/26

    摘要： The present invention provides a method and apparatus for increasing the intensity of coherent population trapping (CPT) resonances, used in atomic clocks and magnetometers, by pumping the atoms with light of alternating polarization. Pumping with such light, characterized by a photon spin vector that alternates in direction at a hyperfine frequency of the atoms at the location of the atoms, is referred to as push-pull pumping. In one embodiment of the system of the present invention, alkali-metal vapor is pumped with alternating circular-polarization D1 laser light that is intensity modulated at appropriate resonance frequencies, thereby exciting CPT resonances, which can be observed as increase in the mean transmittance of the alkali-metal vapor. These resonances are substantially enhanced due to an optically-induced concentration of atoms in the resonant energy sublevels.

    摘要翻译： 本发明提供了一种用于通过用交替极化的光泵浦原子来增加在原子钟和磁力计中使用的相干群体捕获（CPT）共振的强度的方法和装置。 用这样的光泵浦，其特征在于在原子位置处的原子的超精细频率在方向上交替的光子自旋矢量被称为推挽泵浦。 在本发明的系统的一个实施例中，碱金属蒸汽用交替的圆偏振D 1激光泵浦，其以适当的共振频率进行强度调制，从而激发CPT谐振，这可以通过平均透射率的增加来观察 的碱金属蒸汽。 由于谐振能量子层中的原子的光学诱导浓度，这些共振显着增强。