EXPERIMENTAL REALIZATION OF COHERENT DARK-STATE MAGNETOMETERS

Authors
NAGEL A GRAF L NAUMOV A MARIOTTI E BIANCALANA V MESCHEDE D WYNANDS R
Citation
A. Nagel et al., EXPERIMENTAL REALIZATION OF COHERENT DARK-STATE MAGNETOMETERS, Europhysics letters (Print), 44(1), 1998, pp. 31-36
Citations number
19
Categorie Soggetti
Physics
Journal title
Europhysics letters (Print) → ACNP
ISSN journal
02955075
Volume
44
Issue
1
Year of publication
1998
Pages
31 - 36
Database
ISI
SICI code
0295-5075(1998)44:1<31:EROCDM>2.0.ZU;2-P
Abstract
Coherent population trapping resonances in cesium vapor can be used to determine DC flux densities in the range from 1 mu T to 1 mT with typ ically 3.10(-5) relative uncertainty. For fields modulated at a few kH z, we find sensitivities of below 10 pT within 0.5 s integration time. From the signal-to-noise ratio the sensitivity can be extrapolated to 500 fT/root Hz.. A quantitative understanding of the lineshape allows to detect DC fields of several nT even when the Zeeman components of the resonance are not resolved.