OSA Advanced Photonics Congress

Sub-nano-Tesla, Shield-less, Field Compensation-Free Inelastic Wave Mixing Magnetometry for Bio-magnetism

L. Deng, Yvonne Y. Li, Feng Lei Zhou, Eric Zhu, E. W. Hagley

Published Jan 1, 2018• 0 citations

Abstract

We report an inelastic-wave-mixing-enhanced Zeeman-coherence atomic magnetometry scheme that results in sub-nT magnetic field detection at human-body temperatures without employing magnetic field shielding, field compensation, and RF-modulation spectroscopy.

DOI: 10.1364/sensors.2018.sem3e.2

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OSA Advanced Photonics Congress

Sub-nano-Tesla, Shield-less, Field Compensation-Free Inelastic Wave Mixing Magnetometry for Bio-magnetism

L. Deng, Yvonne Y. Li, Feng Lei Zhou, Eric Zhu, E. W. Hagley

Published Jan 1, 2018• 0 citations

Publisher

Abstract

DOI: 10.1364/sensors.2018.sem3e.2

Related papers

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Λ-

scheme atomic magnetometry method. This new technique may bring possibilities for extremely sensitive magnetic field imaging of biological systems accessible via an optical fiber in clinical environments.

fT/\sqrt{Hz}

using a single linearly-polarized probe light field. Here we demonstrate a nonlinear Zeeman-coherence parametric wave-mixing optical-atomic magnetometer using room temperature rubidium vapor that results in more than a three-order-of-magnitude optical signal-to-noise ratio (SNR) enhancement for extremely weak magnetic field sensing. This unprecedented enhancement was achieved with nearly a two-order-of-magnitude reduction in laser power while preserving the sensitivity of the widely-used single-probe beam optical-atomic magnetometry method. This new method opens a myriad of applications ranging from bio-magnetic imaging to precision measurement of the magnetic properties of subatomic particles.