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 typically 3.10(-5) relative uncertainty. For fields modulated at a few kHz, 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.
Nagel, A., Graf, L., Naumov, A., Mariotti, E., Biancalana, V., Meschede, D., et al. (1998). Experimental realization of coherent dark-state magnetometers. EUROPHYSICS LETTERS, 44(1), 31-36 [10.1209/epl/i1998-00430-0].
Experimental realization of coherent dark-state magnetometers
Mariotti, E.;Biancalana, V.;
1998-01-01
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 typically 3.10(-5) relative uncertainty. For fields modulated at a few kHz, 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.File | Dimensione | Formato | |
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https://hdl.handle.net/11365/8396
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