Polarization-driven spin precession of mesospheric sodium atoms: publisher’s note

Bustos, Felipe Pedreros; Calia, Domenico Bonaccini; Budker, Dmitry; Centrone, Mauro; Hellemeier, Joschua; Hickson, Paul; Holzlöhner, Ronald; Rochester, Simon

doi:10.1364/ol.44.000138

Cited by 3 publications

(3 citation statements)

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“…Magnetomyography [155,171], MEG [5,89,129,130,136,[172][173][174][175][176], MCG and fMCG [21,22,98,128,174,177], magnetic-field imaging [178] Magnetic biomarkers [132,[179][180][181][182] Biomagnetism of plants [183,184] and livestock [185] Zero-/low-field NMR [133,134,149,[186][187][188][189][190][191][192][193]] Geophysics [91,194] Aerospace [108,195] Laser guide stars [196]…”

Section: Biomedicalmentioning

confidence: 99%

How to build a magnetometer with thermal atomic vapor: a tutorial

2023

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This article is designed as a step-by-step guide to optically pumped magnetometers based on alkali atomic vapor cells. We begin with a general introduction to atomic magneto-optical response, as well as expected magnetometer performance merits and how they are affected by main sources of noise. This is followed by a brief comparison of different magnetometer realizations and an overview of current research, with the aim of helping readers to identify the most suitable magnetometer type for specific applications. Next, we discuss some practical considerations for experimental implementations, using the case of an M z magnetometer as an example of the design process. Finally, an interactive workbook with real magnetometer data is provided to illustrate magnetometer-performance analysis.

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Section: Biomedicalmentioning

confidence: 99%

How to build a magnetometer with thermal atomic vapor: a tutorial

2023

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“…The measurement sensitivity was further improved to 28 nT Hz −1/2 by Bustos et al [4]. Polarization-modulated light was used to measure geomagnetic field with an uncertainty of 30 nT [5]. Sensitive measurement and large-scale mapping of geomagnetic field can provide better insight into various processes impacting the mesosphere region, thus, enabling several important scientific studies, for example, magnetic fluctuations at mesospheric altitude can be used to determine large-scale ocean currents [6], mapping local current structures in the dynamo region [7], and magnetic structures in the earth's upper mantle [8].…”

mentioning

confidence: 99%

“…The measurements were done using sodium fluorescence in a direction perpendicular to the laser beam axis. In this letter, we focus on studying magneto-optical resonances in fluorescence from Na D2 line, which has been used in all sky experiments [3][4][5]. We study the properties of magnetic resonances by detecting fluorescence at directions perpendicular and backward to laser beam propagation in a sodium cell.…”

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confidence: 99%

Magneto-optical resonances in fluorescence from sodium D₂ manifold

Grewal¹,

Pati²,

Tripathi³

et al. 2020

Opt. Express

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We report on magneto-optical resonances observed in sodium fluorescence from D2 manifold with an intensity modulated light illuminating a sodium (Na) cell containing Ne buffer gas. Resonances are measured in fluorescence emitted perpendicular and backward to the light propagation direction in the cell. Properties of these resonances are studied by varying the magnetic field at fixed light modulation frequency, and vice-versa. A dark resonance having maximum amplitude for laser wavelength close to the crossover peak, is observed. The origin of dark resonance observed in Na D2 line is discussed. Pulse modulation with low-duty cycle shows higher-harmonic resonances of the modulation frequency and sub-harmonic resonances of the Larmor frequency. Present study is aimed towards improving the understanding of magneto-optical resonances for remote magnetometry applications with mesospheric sodium.

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Magnetometry using sodium fluorescence with synchronous modulation of two-photon resonant light fields

Grewal

Pulido

Pati

et al. 2020

Applied Physics Letters

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We have demonstrated a technique for remote magnetometry using fluorescence measurements in a sodium cell. This technique utilizes two-photon resonance instead of single-photon resonance to generate magnetic resonances with synchronous modulation of two laser fields. A strong magnetic resonance with its dip matching the Larmor frequency, ΩL, is produced when a magnetic field perpendicular to the laser propagation direction is applied. A magnetic field sensitivity of 45 pT/√Hz is measured at a 35% modulation duty cycle where ΩL resonance has a maximum amplitude. We have discussed ways to further improve the sensitivity closer to the shot-noise limit by making changes to our existing setup. An additional magnetic resonance at 3ΩL is also formed due to two-photon resonance, which can be utilized in determining the magnetic field orientation. We have developed a theoretical model based on density matrix equations to study the magnetic resonances under different conditions and also for validating our experimental observations.

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Polarization-driven spin precession of mesospheric sodium atoms: publisher’s note

Cited by 3 publications

References 1 publication

How to build a magnetometer with thermal atomic vapor: a tutorial

How to build a magnetometer with thermal atomic vapor: a tutorial

Magneto-optical resonances in fluorescence from sodium D₂ manifold

Magnetometry using sodium fluorescence with synchronous modulation of two-photon resonant light fields

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Polarization-driven spin precession of mesospheric sodium atoms: publisher’s note

Cited by 3 publications

References 1 publication

How to build a magnetometer with thermal atomic vapor: a tutorial

How to build a magnetometer with thermal atomic vapor: a tutorial

Magneto-optical resonances in fluorescence from sodium D2 manifold

Magnetometry using sodium fluorescence with synchronous modulation of two-photon resonant light fields

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Product

Resources

About

Magneto-optical resonances in fluorescence from sodium D₂ manifold