Unshielded scalar magnetometer based on nonlinear magneto-optical rotation with amplitude modulated light

Li, Wenhao; Peng, Xiang; Li, Songjian; Liu, Chuanfei; Guo, Hong; Lin, Pingwei; Zhang, Wei

doi:10.1109/fcs.2016.7546761

Cited by 5 publications

(2 citation statements)

References 17 publications

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Section: Optically Pumped Atomic Magnetometersmentioning

confidence: 99%

“…The operating mechanisms of such sensors are (i) coherent population trapping [125], (ii) non-linear magneto-optical rotation [126], and (iii) spin-exchange relaxation-free [34] regimes. Magnetometers based on (i) and (ii) can reach detection limits of 0.1-1 pT/√Hz [127,128] without requiring magnetic shielding while magnetic sensors based on (iii) provide a detection level of the order of 10 fT/√Hz, but in most cases, they need to be placed in a magnetically shielded room [129][130][131]. The fact, that these magnetometers do not require strong cooling systems such as SQUIDs and are easy to miniaturize which make them very promising in the field of biomagnetic sensing [132][133][134].…”

Section: Optically Pumped Atomic Magnetometersmentioning

confidence: 99%

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Ultrasensitive Magnetic Field Sensors for Biomedical Applications

Murzin

Mapps

Levada

et al. 2020

Sensors

154

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The development of magnetic field sensors for biomedical applications primarily focuses on equivalent magnetic noise reduction or overall design improvement in order to make them smaller and cheaper while keeping the required values of a limit of detection. One of the cutting-edge topics today is the use of magnetic field sensors for applications such as magnetocardiography, magnetotomography, magnetomyography, magnetoneurography, or their application in point-of-care devices. This introductory review focuses on modern magnetic field sensors suitable for biomedicine applications from a physical point of view and provides an overview of recent studies in this field. Types of magnetic field sensors include direct current superconducting quantum interference devices, search coil, fluxgate, magnetoelectric, giant magneto-impedance, anisotropic/giant/tunneling magnetoresistance, optically pumped, cavity optomechanical, Hall effect, magnetoelastic, spin wave interferometry, and those based on the behavior of nitrogen-vacancy centers in the atomic lattice of diamond.

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