Coherent population trapping for magnetic field measurements

Alipieva, E.; Andreeva, C.; Avramov, L.; Bevilaqua, G.; Biancalana, Valerio; Borisova, Ekaterina; Breschi, E.; Cartaleva, S.; Dancheva, Yordanka; Gateva, S.; Karaulanov, T.; Lammegger, Roland; Moi, L.; Petrov, L.; Petrov, N.I.; Slavov, D.; Taskova, E.; Todorov, G.; Windholz, Laurentius; Yanev, A.

doi:10.1117/12.617773

Cited by 7 publications

(5 citation statements)

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“…The corresponding theoretical curves of the signals were calculated according to (8). By varying the amplitudes of the curves obtained and taking into account the regression analysis results, we found the total intensity that is in the best agreement with the experimental curve.…”

Section: 3mentioning

confidence: 98%

Shape of the coherent-population-trapping resonances registered in fluorescence at different experimental geometries

Gateva¹,

Alipieva²,

Domelunksen

et al. 2008

SPIE Proceedings

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A model for description of the shapes of the coherent population trapping (CPT) resonances at different geometries of excitation and observation is developed. The numerical calculations, based on the irreducible tensor operator formalism, take into account the experimental geometry, the velocity distribution of the atoms, the Gaussian distribution of the laser beam intensity and the high rank polarization moments (HRPM). The results for different laser beam diameters, aperture of the detection, position of the photodetector etc. are compared with the experimental data. A method for description of the experimental shapes is proposed.

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Section: 3mentioning

confidence: 98%

Shape of the coherent-population-trapping resonances registered in fluorescence at different experimental geometries

Gateva¹,

Alipieva²,

Domelunksen

et al. 2008

SPIE Proceedings

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“…[37]), diode-laser-based all-optical magnetometers for the geophysical range have been also developed recently (Refs. [38,39,40,41], for example). At geomagnetic fields, sensitive atomic magnetometers have to contend with the complications arising from the nonlinear Zeeman effect caused by the Breit-Rabi mixing of hyperfine energy levels.…”

Section: Additional Characteristics Of a Magnetometermentioning

confidence: 99%

Optical magnetometry

2007

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Some of the most sensitive methods of measuring magnetic fields utilize interactions of resonant light with atomic vapor. Recent developments in this vibrant field are improving magnetometers in many traditional areas such as measurement of geomagnetic anomalies and magnetic fields in space, and are opening the door to new ones, including, dynamical measurements of bio-magnetic fields, detection of nuclear magnetic resonance (NMR), magnetic-resonance imaging (MRI), inertialrotation sensing, magnetic microscopy with cold atoms, and tests of fundamental symmetries of Nature.

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“…Being based on quantum transitions, the method is absolute and such a system does not require calibration, and this quality makes it promising for navigation and space measurement [11][12][13]. Because of its all-optical structure, it can be miniaturized and can also avoid the influence of metallic parts in the sensors that other kinds of magnetometers have, and this could be useful in bioscience [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Loop-locked coherent population trapping magnetometer based on a fiber electro-optic modulator

Feng

et al. 2014

Appl. Opt.

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We have set up a coherent population trapping (CPT)-based magnetometer prototype with the D1 line of ⁸⁷Rb atoms. The dichromatic light field is derived from a fiber electro-optic modulator (FEOM) connected to an external cavity laser diode. A CPT resonance signal with a 516 Hz linewidth is observed. By feeding back the derivative of the resonance curve to the FEOM with a proportional integral controller, of which the voltage output is directly converted to the measured magnetic field intensity, the resonance peak is locked to the environmental magnetic field. The measurement data we have achieved are well matched with the data measured by a commercial fluxgate magnetometer within 2 nT, and the sensitivity is better than 8 pT/√Hz in a parallel B field.

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Coherent population trapping for magnetic field measurements

Cited by 7 publications

References 0 publications

Shape of the coherent-population-trapping resonances registered in fluorescence at different experimental geometries

Shape of the coherent-population-trapping resonances registered in fluorescence at different experimental geometries

Optical magnetometry

Loop-locked coherent population trapping magnetometer based on a fiber electro-optic modulator

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