知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

36 条记录 (耗时 0.035 秒)

    Efficient thermal drift compensation in DNV vector magnetometry
    1.
    发明授权
    Efficient thermal drift compensation in DNV vector magnetometry 有权

    公开(公告)号：US10359479B2

    公开(公告)日：2019-07-23

    申请号：US15437038

    申请日：2017-02-20

    申请人： Lockheed Martin Corporation

    发明人： Arul Manickam ,  Peter G. Kaup

    IPC分类号： G01R33/00 ,  G01R33/032 ,  G01N24/10 ,  G01R33/26

    摘要： A system for magnetic detection of an external magnetic field is described. The system includes a nitrogen vacancy (NV) diamond material having a plurality of crystallographic axes, a radio frequency (RF) excitation source, an optical excitation source, an optical detector, and a controller. The RF radio frequency excitation source is configured to provide RF excitations to the NV diamond material to excite electron spin resonances corresponding to the RF excitations. The controller determines the spectral position corresponding to some of the electron spin resonances, determines a measured four-dimensional projection of a magnetic field based on the determined spectral positions of a subset of all of the plurality of spin resonances, where the number of spin resonances in the subset is one half of a total number of the spin resonances, and determines an estimated three-dimensional magnetic field based on the measured four-dimensional magnetic field projections.

    Selected volume continuous illumination magnetometer
    2.
    发明授权
    Selected volume continuous illumination magnetometer 有权

    公开(公告)号：US10345396B2

    公开(公告)日：2019-07-09

    申请号：US15380419

    申请日：2016-12-15

    申请人： Lockheed Martin Corporation

    发明人： Arul Manickam ,  Peter G. Kaup ,  Gregory Scott Bruce ,  Wilbur Lew

    IPC分类号： G01R33/032

    摘要： A system for magnetic detection, includes a magneto-optical defect center material comprising a plurality of magneto-optical defect centers, a radio frequency (RF) excitation source, an optical detector and an optical light source. The RF excitation source is configured to provide RF excitation to the material. The optical detector is configured to receive an optical signal emitted by the material. The optical light source is configured to provide optical light to the material, and includes a readout optical light source and a reset optical light source. The readout optical light source is configured to illuminate light in a first illumination volume of the material. The reset optical light source is configured to illuminate light in a second illumination volume of the material, the second illumination volume being larger than and encompassing the first illumination volume. The reset optical light source provides a higher power light than the readout optical light source.

    Phase shifted magnetometry adaptive cancellation
    5.
    发明授权
    Phase shifted magnetometry adaptive cancellation 有权

    公开(公告)号：US10816616B2

    公开(公告)日：2020-10-27

    申请号：US16031096

    申请日：2018-07-10

    申请人： LOCKHEED MARTIN CORPORATION

    发明人： Arul Manickam ,  Peter G. Kaup ,  Gregory Scott Bruce

    IPC分类号： G01R33/26

    摘要： A system for magnetic detection of an external magnetic field is described. The system includes a controller configured to control components of the system. The controller is configured to control an optical excitation source and a RF excitation source to apply pulse sequences to a magneto-optical defect center material such that in the excitation pulses of a first pair of RF excitation pulses have a first phase difference, the excitation pulses of a second pair of RF excitation pulses have a second phase difference, and the second phase difference is different from the first phase difference. The controller computes a combined magnetometry curve as a function of the RF excitation frequency based on a difference between a measured value of a first light detection signal and a measured value of a second light detection signal. The controller sets the first phase difference and the second phase difference based on the combined magnetometry curve.

    MULTI-FREQUENCY EXCITATION SCHEMES FOR HIGH SENSITIVITY MAGNETOMETRY MEASUREMENT WITH DRIFT ERROR COMPENSATION
    7.
    发明申请
    MULTI-FREQUENCY EXCITATION SCHEMES FOR HIGH SENSITIVITY MAGNETOMETRY MEASUREMENT WITH DRIFT ERROR COMPENSATION 审中-公开

    公开(公告)号：US20180011151A1

    公开(公告)日：2018-01-11

    申请号：US15207457

    申请日：2016-07-11

    申请人： Lockheed Martin Corporation

    发明人： Peter G. Kaup ,  Arul Manickam ,  Gregory Scott Bruce

    IPC分类号： G01R33/26

    CPC分类号： G01R33/26 ,  G01N24/12 ,  G01R33/323

    摘要： A system for magnetic detection includes a nitrogen vacancy (NV) diamond material, a radio frequency (RF) excitation source that provides RF excitation to the NV diamond material, an optical excitation source that provides optical excitation to the NV diamond material, an optical detector that receives an optical signal emitted by the NV diamond material, a magnetic field generator that generates a magnetic field applied to the NV diamond material, and a controller. The controller controls the RF excitation source to apply a first RF excitation having a first frequency and a second RF excitation having a second frequency. The first frequency is associated with a first slope point of a fluorescence intensity response of an NV center orientation of a first spin state, and the second frequency is associated with a second slope point of the fluorescence intensity response of the NV center orientation of the first spin state.