Deans, C;
Marmugi, L;
Renzoni, F;
(2018)
Sub-picotesla widely tunable atomic magnetometer operating at room-temperature in unshielded environments.
Review of Scientific Instruments
, 89
(8)
, Article 083111. 10.1063/1.5026769.
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Abstract
We report on a single-channel rubidium radio-frequency atomic magnetometer operating in unshielded environments and near room temperature with a measured sensitivity of 130 fT/√ Hz. We demonstrate consistent, narrow-bandwidth operation across the kHz–MHz band, corresponding to three orders of magnitude of the magnetic field amplitude. A compensation coil system controlled by a feedback loop actively and automatically stabilizes the magnetic field around the sensor. We measure a reduction in the 50 Hz noise contribution by an order of magnitude. The small effective sensor volume, 57 mm3 , increases the spatial resolution of the measurements. Low temperature operation, without any magnetic shielding, coupled with the broad tunability, and low beam power, dramatically extends the range of potential field applications for our device.
| Type: | Article |
|---|---|
| Title: | Sub-picotesla widely tunable atomic magnetometer operating at room-temperature in unshielded environments |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.5026769 |
| Publisher version: | http://doi.org/10.1063/1.5026769 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10053556 |
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