SE304385B - - Google Patents

Info

Publication number
SE304385B
SE304385B SE2797/62A SE279762A SE304385B SE 304385 B SE304385 B SE 304385B SE 2797/62 A SE2797/62 A SE 2797/62A SE 279762 A SE279762 A SE 279762A SE 304385 B SE304385 B SE 304385B
Authority
SE
Sweden
Application number
SE2797/62A
Inventor
W Bell
A Bloom
Original Assignee
Varian Associates
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Varian Associates filed Critical Varian Associates
Publication of SE304385B publication Critical patent/SE304385B/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
    • G01N24/006—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects using optical pumping
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/26—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux using optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S1/00—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Immunology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measuring Magnetic Variables (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
SE2797/62A 1961-03-14 1962-03-13 SE304385B (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US95581A US3173082A (en) 1961-03-14 1961-03-14 Optically driven spin precession method and apparatus

Publications (1)

Publication Number Publication Date
SE304385B true SE304385B (xx) 1968-09-23

Family

ID=22252656

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2797/62A SE304385B (xx) 1961-03-14 1962-03-13

Country Status (5)

Country Link
US (1) US3173082A (xx)
DE (1) DE1206083B (xx)
GB (1) GB974389A (xx)
NL (2) NL275910A (xx)
SE (1) SE304385B (xx)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256478A (en) * 1963-12-26 1966-06-14 Varian Associates Optical pumping of hyperfine states by light pulsed at the zeeman frequency
US3501689A (en) * 1966-06-06 1970-03-17 Varian Associates Magnetometer
US3495161A (en) * 1967-01-19 1970-02-10 Varian Associates Optically driven atomic resonator systems employing means for modulating the sense of rotational polarization of the pumping light
US3549987A (en) * 1967-10-31 1970-12-22 Us Navy Laser epr system
US3524128A (en) * 1967-11-03 1970-08-11 Sinclair Research Inc Magnetometer optimization method and apparatus
US3725775A (en) * 1968-08-23 1973-04-03 R Gasser Self-oscillating helium magnetometer
GB2163257A (en) * 1984-08-15 1986-02-19 Leonard Arthur Freeman Modified magnetic resonance apparatus
US4780672A (en) * 1987-04-30 1988-10-25 Texas Instruments Incorporated Laser driven helium magnetometers
US5036278A (en) * 1989-09-29 1991-07-30 Polatomic, Inc. Radiation source for helium magnetometers
US9470767B2 (en) * 2012-04-12 2016-10-18 Case Western Reserve University Wireless magnetic field monitoring in magnetic resonance imaging
US10976386B2 (en) 2018-07-17 2021-04-13 Hi Llc Magnetic field measurement system and method of using variable dynamic range optical magnetometers
US11262420B2 (en) 2018-08-17 2022-03-01 Hi Llc Integrated gas cell and optical components for atomic magnetometry and methods for making and using
US10983177B2 (en) 2018-08-20 2021-04-20 Hi Llc Magnetic field shaping components for magnetic field measurement systems and methods for making and using
US10627460B2 (en) 2018-08-28 2020-04-21 Hi Llc Systems and methods including multi-mode operation of optically pumped magnetometer(s)
CN108801933B (zh) * 2018-09-17 2020-07-28 中国科学院武汉物理与数学研究所 分子旋光滤光的机动车尾气成像遥感监测装置及方法
WO2020060652A1 (en) 2018-09-18 2020-03-26 Hi Llc Dynamic magnetic shielding and beamforming using ferrofluid for compact magnetoencephalography (meg)
US11294008B2 (en) 2019-01-25 2022-04-05 Hi Llc Magnetic field measurement system with amplitude-selective magnetic shield
EP3924743A1 (en) * 2019-02-12 2021-12-22 Hi LLC Neural feedback loop filters for enhanced dynamic range magnetoencephalography (meg) systems and methods
US11360164B2 (en) 2019-03-29 2022-06-14 Hi Llc Integrated magnetometer arrays for magnetoencephalography (MEG) detection systems and methods
US11269027B2 (en) 2019-04-23 2022-03-08 Hi Llc Compact optically pumped magnetometers with pump and probe configuration and systems and methods
US11131723B2 (en) 2019-05-03 2021-09-28 Hi Llc Single controller for wearable sensor unit that includes an array of magnetometers
US11839474B2 (en) 2019-05-31 2023-12-12 Hi Llc Magnetoencephalography (MEG) phantoms for simulating neural activity
US11131729B2 (en) 2019-06-21 2021-09-28 Hi Llc Systems and methods with angled input beams for an optically pumped magnetometer
US11415641B2 (en) 2019-07-12 2022-08-16 Hi Llc Detachable arrangement for on-scalp magnetoencephalography (MEG) calibration
WO2021026143A1 (en) 2019-08-06 2021-02-11 Hi Llc Systems and methods having an optical magnetometer array with beam splitters
WO2021045953A1 (en) 2019-09-03 2021-03-11 Hi Llc Methods and systems for fast field zeroing for magnetoencephalography (meg)
US11474129B2 (en) 2019-11-08 2022-10-18 Hi Llc Methods and systems for homogenous optically-pumped vapor cell array assembly from discrete vapor cells
US11604236B2 (en) 2020-02-12 2023-03-14 Hi Llc Optimal methods to feedback control and estimate magnetic fields to enable a neural detection system to measure magnetic fields from the brain
US11872042B2 (en) 2020-02-12 2024-01-16 Hi Llc Self-calibration of flux gate offset and gain drift to improve measurement accuracy of magnetic fields from the brain using a wearable neural detection system
US11980466B2 (en) 2020-02-12 2024-05-14 Hi Llc Nested and parallel feedback control loops for ultra-fine measurements of magnetic fields from the brain using a neural detection system
US11801003B2 (en) 2020-02-12 2023-10-31 Hi Llc Estimating the magnetic field at distances from direct measurements to enable fine sensors to measure the magnetic field from the brain using a neural detection system
US11977134B2 (en) 2020-02-24 2024-05-07 Hi Llc Mitigation of an effect of capacitively coupled current while driving a sensor component over an unshielded twisted pair wire configuration
US11766217B2 (en) 2020-05-28 2023-09-26 Hi Llc Systems and methods for multimodal pose and motion tracking for magnetic field measurement or recording systems
WO2021242682A1 (en) 2020-05-28 2021-12-02 Hi Llc Systems and methods for recording biomagnetic fields of the human heart
WO2021242680A1 (en) 2020-05-28 2021-12-02 Hi Llc Systems and methods for recording neural activity
US11428756B2 (en) 2020-05-28 2022-08-30 Hi Llc Magnetic field measurement or recording systems with validation using optical tracking data
US11604237B2 (en) 2021-01-08 2023-03-14 Hi Llc Devices, systems, and methods with optical pumping magnetometers for three-axis magnetic field sensing
US11803018B2 (en) 2021-01-12 2023-10-31 Hi Llc Devices, systems, and methods with a piezoelectric-driven light intensity modulator
CN114720918B (zh) * 2022-06-07 2022-09-06 华中师范大学 一种测量交变矢量磁场的方法及装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070698A (en) * 1959-04-17 1962-12-25 Schlumberger Well Surv Corp Quantummechanical counters

Also Published As

Publication number Publication date
NL275910A (xx)
NL124971C (xx)
US3173082A (en) 1965-03-09
GB974389A (en) 1964-11-04
DE1206083B (de) 1965-12-02

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