Results 41 to 50 of about 25,141 (249)
All-Optical Parametric-Resonance Magnetometer Based on 4He Atomic Alignment
Sensors, 2022 Parametric-resonance magnetometer is a high-sensitivity quantum sensor characterized by applying the non-resonant radio-frequency (RF) fields to the atomic ensemble. The RF fields lead to crosstalk in the multi-sensor design, thus disturbing the magnetic-
Bowen Wang +4 more
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Optimization and performance of an optical cardio-magnetometer [PDF]
, 2004 Cardiomagnetometry is a growing field of noninvasive medical diagnostics that has triggered a need for affordable high-sensitivity magnetometers. Optical pumping magnetometers are promising candidates satisfying that need since it was demonstrated that ...
Alexandrov +16 more
core +2 more sources
Magnetometer suitable for Earth field measurement based on transient atomic response
, 2012 We describe the development of a simple atomic magnetometer using $^{87}$Rb vapor suitable for Earth magnetic field monitoring. The magnetometer is based on time-domain determination of the transient precession frequency of the atomic alignment around ...
A Lezama +6 more
core +1 more source
EDGE DETECTION IN ATOMIC MAGNETOMETER IMAGING
Journal of the Siena Academy of Sciences, 2019 We present the results of an edge detection algorithm applied on Electromagnetic Induction Imaging provided by an Atomic radio-frequency Magnetometer operating in an unshielded environment and at room temperature. Atomic Magnetometers have been already used for Imaging Techniques in the last few years, but the image reconstruction and the object ...
Papi, N. +4 more
openaire +3 more sources
Benchtop Magnetic Shielding for Benchmarking Atomic Magnetometers
IEEE Transactions on Instrumentation and Measurement, 2023 Here, a benchtop hybrid magnetic shield containing four mumetal cylinders and nine internal flexible printed circuit boards is designed, constructed, tested, and operated. The shield is designed specifically as a test-bed for building and operating ultra-sensitive quantum magnetometers. The geometry and spacing of the mumetal cylinders are optimized to
Peter J. Hobson +16 more
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Three-Axis Atomic Magnetometer Employing Longitudinal Field Modulation
IEEE 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 +1 more source
Can a quantum nondemolition measurement improve the sensitivity of an atomic magnetometer?
, 2004 Noise properties of an idealized atomic magnetometer that utilizes spin squeezing induced by a continuous quantum nondemolition measurement are considered.
Auzinsh, M +6 more
core +2 more sources
Sub-picotesla widely tunable atomic magnetometer operating at room-temperature in unshielded environments [PDF]
, 2018 We report on a single-channel rubidium radio-frequency atomic magnetometer operating in un-shielded environments and near room temperature with a measured sensitivity of 130 fT/\sqrt{Hz}.
Deans, Cameron +2 more
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Microfabricated atomic magnetometers and applications [PDF]
2008 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 ...
John Kitching +8 more
openaire +1 more source
Photonic Sensors, 2019 We propose an in-situ method to calibrate the coil constants of the optical atomic magnetometer. This method is based on measuring the Larmor precession of spin polarized alkali metal atoms and has been demonstrated on a K-Rb hybrid atomic magnetometer ...
Han Yao +4 more
doaj +1 more source