Results 11 to 20 of about 4,902 (209)

Suppression Method of AC-Stark Shift in SERF Atomic Magnetometer

open access: yesIEEE Photonics Journal, 2018
In a spin-exchange-relaxation-free (SERF) atomic magnetometer with ultrahigh sensitivity, the ac-Stark shift generated by circularly polarized light results in the attenuation of the SERF atomic magnetometer response, and the virtual magnetic field ...
Yang Li   +5 more
doaj   +3 more sources

Improving the Sensitivity of a Dark-Resonance Atomic Magnetometer [PDF]

open access: yesSensors
The combination of unmanned aerial vehicles and atomic magnetometers can be used for detection applications such as mineral resource exploration, environmental protection, and earthquake monitoring, as well as the detection of sunken ships and unexploded
Hao Zhai, Wei Li, Guangxiang Jin
doaj   +2 more sources

Magnetoencephalography with a chip-scale atomic magnetometer. [PDF]

open access: yesBiomed Opt Express, 2012
We report on the measurement of somatosensory-evoked and spontaneous magnetoencephalography (MEG) signals with a chip-scale atomic magnetometer (CSAM) based on optical spectroscopy of alkali atoms. The uncooled, fiber-coupled CSAM has a sensitive volume of 0.77 mm(3) inside a sensor head of volume 1 cm(3) and enabled convenient handling, similar to an ...
Sander TH   +5 more
europepmc   +3 more sources

Three-Axis Atomic Magnetometer Employing Longitudinal Field Modulation

open access: yesIEEE Photonics Journal, 2017
A three-axis atomic magnetometer employing longitudinal field modulation is demonstrated theoretically and experimentally. The operational condition of this magnetometer is that the longitudinal z-component of the external magnetic field is dominant ...
Zhichao Ding   +4 more
doaj   +3 more sources

Femtotesla atomic magnetometer for zero- and ultralow-field nuclear magnetic resonance [PDF]

open access: yesMagnetic Resonance Letters
Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science and quantum information processing to fundamental physics.
Taizhou Hong   +5 more
doaj   +2 more sources

Research on the application of unmanned aerial vehicle aeromagnetic measurement based on rubidium optical pump magnetometer [PDF]

open access: yesScientific Reports
Optical Pumped Magnetometers (OPMs) have become key instruments in the field of precision magnetic field measurement due to their high accuracy, stability, and compact design.
Hanqi Zhou   +10 more
doaj   +2 more sources

Drug Monitoring by Optically Pumped Atomic Magnetometer

open access: yesIEEE Photonics Journal, 2022
A novel drug monitoring method is experimentally demonstrated by optically pumped atomic magnetometer. An elliptically polarized single-beam spin-exchange-relaxation-free atomic magnetometer (SERF AM) is used to realize magnetorelaxometry (MRX ...
Yi Ruan   +10 more
doaj   +1 more source

NMR Detection with an Atomic Magnetometer [PDF]

open access: yesPhysical Review Letters, 2005
We demonstrate detection of NMR signals using a non-cryogenic atomic magnetometer and describe several novel applications of this technique. A water free induction decay (FID) signal in a 0.5 $μ$T field is detected using a spin-exchange-relaxation-free K magnetometer and the possibility of using a multi-channel magnetometer for 3-D MRI requiring only a
Savukov, I. M., Romalis, M. V.
openaire   +3 more sources

Microfabricated atomic magnetometers and applications [PDF]

open access: yes2008 IEEE International Frequency Control Symposium, 2008
We describe recent work at NIST to develop compact, sensitive atomic magnetometers using a combination of precision optical spectroscopy, atomic physics and techniques of micro-electro-mechanical systems (MEMS). These instruments have sensor head volumes in the range of a few cubic millimeters but are capable of sensing magnetic fields of a few ...
Kitching, John   +8 more
openaire   +1 more source

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