Ultra-Sensitive Optical Atomic Magnetometers and Their Applications

Savukov, Igor

doi:10.5772/7153

Cited by 10 publications

(6 citation statements)

References 31 publications

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“…[ 12 ] A technique based on optical pumping and spin‐exchange relaxation‐free (SERF) effect extends the coherence time of electron spin and enables OPMs to achieve the highest magnetic field sensitivity. [ 13 ] During spin‐exchange collisions, the valence‐electron wavefunction of the alkali metal overlaps with the nucleus of the noble gas, leading to the spin‐coupling effect. [ 14 ] One consequence of the spin‐coupling effect is nuclear spin hyperpolarization.…”

Section: Introductionmentioning

confidence: 99%

Spin‐Decoupling and In‐Situ Nuclear Magnetometer with Hyperpolarized Nuclear Spin

et al. 2023

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This paper investigates the dynamical properties of the spin‐coupling ensemble, with a focus on the spin‐decoupling phenomenon. The nuclear spin in such systems is significantly impacted by the electron spin when the main magnetic field approaches the Fermi contact field of nuclear spin, leading to measurement inaccuracies. A comprehensive dynamics model of the electron‐nuclear spin coupling ensemble has been established and analyzed. It proposes that the primary magnetic field augmenting effectively disentangles the precession frequency of the two spin‐coupling species, thereby yielding a spin‐decoupled state. Such a state allows nuclear spin serves as a high sensitive element for magnetic field measurements, while electron spin serves as a probe to acquire the precession of nuclear spin. With proposed method, a magnetic field resolution of 0.75 nT in a 12000 nT environment is achieved, indicating potential for magnetic field detection in geomagnetic environments. It further demonstrates measurements of electron spin Fermi contact interaction and polarization based on spin‐decoupling and in situ nuclear spin precession, results indicate measurement errors close to 1%. These results demonstrate the effectiveness of our approach in improving the accuracy and sensitivity of magnetic field measurements in spin‐coupled systems such as co‐magnetometers, nuclear magnetic resonance gyroscopes, and nuclear magnetometers.

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Section: Introductionmentioning

confidence: 99%

Spin‐Decoupling and In‐Situ Nuclear Magnetometer with Hyperpolarized Nuclear Spin

et al. 2023

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“…Optical magnetometers are developed for a variety of applications [13] including fundamental research [14][15][16], characterization of magnetic anomalies and of their dynamics in space-physics [17,18], geology [19], archaeology [20,21], material science e.g. to detect diluted magnetic nano-and micro-particles [22] or induced eddy currents [23][24][25][26] (with potential in medical applications, in detection of biomagnetism [27] or in building apparatuses for nuclear magnetic resonance (for spectroscopy or imaging) in the ultra-low-field [28][29][30][31] and zero-to-ultra-low field regimes [32,33].…”

Section: Introductionmentioning

confidence: 99%

Spin dynamic response to a time dependent field

et al. 2021

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The dynamic response of a parametric system constituted by a spin precessing in a time dependent magnetic field is studied by means of a perturbative approach that unveils unexpected features, and is then experimentally validated. The first-order analysis puts in evidence different regimes: beside a tailorable low-pass-filter behaviour, a band-pass response with interesting potential applications emerges. Extending the analysis to the second perturbation order permits to study the response to generically oriented fields and to characterize several non-linear features in the behaviour of such kind of systems.

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“…The interaction of alkali atoms with light is the cornerstone of valuable applications such as atomic magnetometers, atomic clocks, and miniaturized atomic sensors [1] [2]. These miniaturized atomic sensors can enhance the spatial resolution by reducing the size by manipulating the optical field in low dimensions via near-field modes [3][4][5][6][7]. These nearfield modes in nanophotonics, named evanescent fields, can be achieved via several techniques, such as total internal reflection in prisms, grating or perforated nanostructures [8], waveguides [9] and tapered fibers [10].…”

Section: Introductionmentioning

confidence: 99%

Trace of evanescent wave polarization by atomic vapor spectroscopy

Mosleh

RANJBARAN

Hamidi

2021

Preprint

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Various efforts have been made to determine the polarization state of evanescent waves in different structures. The present study shows the reliability of magneto-optical spectroscopy of D1 and D2 lines of rubidium metal and polarization-dependent transitions to investigate and trace the changes in the polarization state of evanescent fields during total internal reflection over different angles. For this purpose, we design and fabricate atomic evanescent Rb vapor cells and examine the effect of polarization changes of evanescent waves, depending on the propagation direction of evanescent waves in anisotropic rubidium vapor media under different external magnetic field configurations theoretically and experimentally. The results confirm the dependency of allowed transitions on the magneto optical configuration as a tool to determine changes in the polarization of evanescent waves in more complicated wave states in anisotropic media.

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Ultra-Sensitive Optical Atomic Magnetometers and Their Applications

Cited by 10 publications

References 31 publications

Spin‐Decoupling and In‐Situ Nuclear Magnetometer with Hyperpolarized Nuclear Spin

Spin‐Decoupling and In‐Situ Nuclear Magnetometer with Hyperpolarized Nuclear Spin

Spin dynamic response to a time dependent field

Trace of evanescent wave polarization by atomic vapor spectroscopy

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