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公开(公告)号：US10935611B2
公开(公告)日：2021-03-02
申请号：US16032040
申请日：2018-07-10
发明人： Joseph W. Hahn , Cedric H. Wu , Yongdan Hu , Kenneth Michael Jackson , Gregory Scott Bruce , Wilbur Lew , Andrew Raymond Mandeville , Duc Huynh
IPC分类号： G01R33/032 , G01N22/00 , G01N21/64
摘要： A magnetometer for magnetic detection includes a magneto-optical defect center material having at least one magneto-optical defect center; a radio frequency (RF) exciter system including a radio frequency (RF) excitation source; an optical excitation system including an optical excitation source; an optical detector configured to receive an optical signal based on light emitted by the magneto-optical defect center material due RF excitation and optical excitation provided to the magneto-optical defect center material via the RF excitation source and the optical excitation source, respectively; a magnetic field generator configured to generate a magnetic field detected at the magneto-optical defect center material; and a system controller.
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公开(公告)号：US10371760B2
公开(公告)日：2019-08-06
申请号：US15468582
申请日：2017-03-24
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, an optical light source, an optical detector, and a radio frequency (RF) excitation source. The optical light source is configured to provide optical excitation to the magneto-optical defect center material. The optical detector is configured to receive an optical signal emitted by the magneto-optical defect center material. The RF excitation source is configured to provide RF excitation to the magneto-optical defect center material. The RF excitation source includes an RF feed connector, and a metallic material coated on the magneto-optical defect center material and electrically connected to the RF feed connecter.
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公开(公告)号：US10345396B2
公开(公告)日：2019-07-09
申请号：US15380419
申请日：2016-12-15
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.
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公开(公告)号：US20170343620A1
公开(公告)日：2017-11-30
申请号：US15440194
申请日：2017-02-23
发明人： Joseph W. Hahn , Wilbur Lew , Nick Luzod , Gregory Scott Bruce
IPC分类号： G01R33/032
CPC分类号： G01R33/032
摘要： Systems and methods using a magneto-optical defect center material magnetic sensor system that uses fluorescence intensity to distinguish the ms=±1 states, and to measure the magnetic field based on the energy difference between the ms=+1 state and the ms=−1 state, as manifested by the RF frequencies corresponding to each state in some embodiments. The system may include an optical excitation source, which directs optical excitation to the material. The system may further include an RF excitation source, which provides RF radiation to the material. Light from the material may be directed through a light pipe to an optical detector. Light from the material may be directed through an optical filter to an optical detector.
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公开(公告)号：US10379174B2
公开(公告)日：2019-08-13
申请号：US15468951
申请日：2017-03-24
发明人： Joseph W. Hahn , Andrew Raymond Mandeville , Gregory Scott Bruce , Arul Manickam , Peter G. Kaup
IPC分类号： G01R33/032 , G01R33/00
摘要： A magnetometer includes a light source that provides excitation light and a magneto-optical defect center material with at least one defect center that transmits emitted light when excited by the excitation light. The magnetometer also includes a light sensor that receives the emitted light and a plurality of magnets that provide a bias magnetic field to the magneto-optical defect center material. The magnetometer further includes a ring magnet holder that has an outer ring with an outside surface and a plurality of holders extending from the ring. The plurality of holders hold the plurality of magnets in a same orientation with respect to one another. The magnetometer further includes a mount that has an inside surface. The outside surface of the outer ring slides along the inside surface of the mount.
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公开(公告)号：US10338163B2
公开(公告)日：2019-07-02
申请号：US15207457
申请日：2016-07-11
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.
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公开(公告)号：US10317279B2
公开(公告)日：2019-06-11
申请号：US15454162
申请日：2017-03-09
IPC分类号： G01J1/04 , G01J1/58 , G02F1/35 , G01R33/032
摘要： A system provides light received from NV diamond material to an optical collector. The provision of light received from NV diamond material to an optical collector impacts the efficiency by which light is directed to the optical collector. The system may be employed to efficiently direct light from the NV diamond material to the optical collector.
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8.发明授权公开(公告)号：US10228429B2
公开(公告)日：2019-03-12
申请号：US15468289
申请日：2017-03-24
IPC分类号： G01R33/26 , G01R33/032
摘要： The present disclosure relates to apparatuses and methods for stimulating a magneto-optical defect material with defect centers in a magnetic detection system using a stimulation process to significantly increase magnetic sensitivity of the detection system. The system utilizes a modified Ramsey pulse sequence pair or a shifted magnetometry adapted cancellation (SMAC) pair to detect and measure the magnetic field acting on the system resulting in mitigation of low-frequency noise sources to provide improved sensor sensitivity. For a SMAC pair measurement, two different values of tau are used as well as two different values of the microwave pulse width.
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公开(公告)号：US20180275223A1
公开(公告)日：2018-09-27
申请号：US15468397
申请日：2017-03-24
IPC分类号： G01R33/26 , G01R33/032 , G01R33/60
CPC分类号： G01R33/26 , G01N24/10 , G01R33/032 , G01R33/60
摘要： Some methods and configurations are disclosed for high bandwidth acquisition of magnetometer data with increased sensitivity. Some embodiments provide for increased bandwidth and sensitivity of the magnetometer by eliminating a reference signal for full repolarization of the magneto-optical defect center material prior to acquisition. Elimination of the reference signal eliminates the time needed to repolarize the magneto-optical defect center material and the acquisition time for the reference signal. Some implementations can include activating a radiofrequency (RF) pulse sequence to apply an RF field to the magneto-optical defect center material and acquiring a magnetic field measurement using the magneto-optical defect center material. The magnetic field measurement may be acquired independent of a reference magnetic field measurement.
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公开(公告)号：US20180275209A1
公开(公告)日：2018-09-27
申请号：US15468582
申请日：2017-03-24
IPC分类号： G01R33/032 , G01J1/58
CPC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, an optical light source, an optical detector, and a radio frequency (RF) excitation source. The optical light source is configured to provide optical excitation to the magneto-optical defect center material. The optical detector is configured to receive an optical signal emitted by the magneto-optical defect center material. The RF excitation source is configured to provide RF excitation to the magneto-optical defect center material. The RF excitation source includes an RF feed connector, and a metallic material coated on the magneto-optical defect center material and electrically connected to the RF feed connecter.
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