Results 41 to 50 of about 3,295 (205)

Recent Developments in Fabrication Methods and Measurement Schemes for Optically Pumped Magnetic Gradiometers: A Comprehensive Review

Micromachines, 2023
Optically pumped gradiometers have long been utilized in measurement in the International Geomagnetic Reference Field (IGRF). With advancements in technologies such as laser diodes and microfabrication, integrated gradiometers with compact sizes have ...
Haifeng Dong, Hangfei Ye, Min Hu, Zongmin Ma   +3 more
doaj   +1 more source

Detection of radio frequency magnetic fields using nonlinear magneto-optical rotation [PDF]

, 2006
We describe a room-temperature alkali-metal atomic magnetometer for detection of small, high frequency magnetic fields. The magnetometer operates by detecting optical rotation due to the precession of an aligned ground state in the presence of a small ...
D. Budker, E. B. Aleksandrov, E. B. Alexandrov, H. G. Robinson, M. P. Ledbetter, S. M. Rochester, S. Pustelny, V. M. Acosta, V. V. Yashchuk, V. Yashchuk   +9 more
core   +2 more sources

A project for a new alkali vapour magnetometer, optically pumped by a diode laser

Annals of Geophysics, 1998
We present here a project for the industrial development of a new magnetometer that is intended to achieve the highest performance in measuring geomagnetic field.
A. Donati, E. Simeone, M. Francesconi, E. Maccioni, E. Alzetta, C. Carmisciano, O. Faggioni, N. Beverini, F. Strumia   +8 more
doaj   +1 more source

Measuring the cortical tracking of speech with optically-pumped magnetometers

NeuroImage, 2021
During continuous speech listening, brain activity tracks speech rhythmicity at frequencies matching with the repetition rate of phrases (0.2–1.5 Hz), words (2–4 Hz) and syllables (4–8 Hz).
Paul de Lange, Elena Boto, Niall Holmes, Ryan M. Hill, Richard Bowtell, Vincent Wens, Xavier De Tiège, Matthew J. Brookes, Mathieu Bourguignon   +8 more
doaj   +1 more source

Experimental study of laser detected magnetic resonance based on atomic alignment [PDF]

, 2006
We present an experimental study of the spectra produced by optical/radio-frequency double resonance in which resonant linearly polarized laser light is used in the optical pumping and detection processes.
Anatoly S. Pazgalev, Antoine Weis, E. B. Aleksandrov, E. B. Aleksandrov, E. B. Aleksandrov, E. B. Aleksandrov, Georg Bison, Gianni Di Domenico, Hervé Saudan, K. L. Corwin, Martin Rebetez, Paul Knowles, Stephan Groeger   +12 more
core   +2 more sources

Fast and robust optically pumped cesium magnetometer [PDF]

Advanced Optical Technologies, 2019
Abstract We present a fast and robust optically pumped magnetometer that is based on a feedback-controlled spin ensemble of cesium atoms in spin-polarized vapor. The table-top system is intended for operation in unshielded environment, and its design allows conversion into a handheld sensor head.
Victor Lebedev, Stefan Hartwig, Thomas Middelmann   +2 more
openaire   +1 more source

Hardware Design and Implementation of a High-Precision Optically Pumped Cesium Magnetometer System Based on the Human-Occupied Vehicle Platform

Applied Sciences
High-precision magnetometers play a crucial role in ocean exploration, geophysical prospecting, and military and security applications. Installing them on human-occupied vehicle (HOV) platforms can greatly enhance ocean exploration capabilities and ...
Keyu Zhou, Qimao Zhang, Qisheng Zhang
doaj   +1 more source

Development of an optically pumped atomic magnetometer using a K-Rb hybrid cell and its application to magnetocardiography

AIP Advances, 2012
We have developed an optically pumped atomic magnetometer using a hybrid cell of K and Rb. The hybrid optical pumping technique can apply dense alkali-metal vapor to the sensor head and leads to high signal intensity.
Yosuke Ito, Hiroyuki Ohnishi, Keigo Kamada, Tetsuo Kobayashi   +3 more
doaj   +1 more source

Pulsed Optically Pumped Magnetometers: Addressing Dead Time and Bandwidth for the Unshielded Magnetorelaxometry of Magnetic Nanoparticles

Sensors, 2021
Magnetic nanoparticles (MNP) offer a large variety of promising applications in medicine thanks to their exciting physical properties, e.g., magnetic hyperthermia and magnetic drug targeting.
Aaron Jaufenthaler, Thomas Kornack, Victor Lebedev, Mark E. Limes, Rainer Körber, Maik Liebl, Daniel Baumgarten   +6 more
doaj   +1 more source

Multichannel optical atomic magnetometer operating in unshielded environment

, 2016
A multi-channel atomic magnetometer operating in an unshielded environment is described and characterised. The magnetometer is based on D1 optical pumping and D2 polarimetry of Cs vapour contained in gas-buffered cells.
Bevilacqua, Giuseppe, Biancalana, Valerio, Chessa, Piero, Dancheva, Yordanka   +3 more
core   +1 more source