Single-beam all-optical non-zero field magnetometric sensor for magnetoencephalography applications

Abstract

We present a method for measuring the magnetic field that allows hyperfine and Zeeman optical pumping, excitation and detection of magnetic resonance by means of a single laser beam with time-modulated ellipticity. This improvement allows us to significantly simplify the Bell-Bloom magnetometric scheme, while retaining its sensitivity. The method does not require the use of radio frequency fields, which is essential when creating arrays of sensors. The results of experimental studies demonstrate the efficiency of the proposed method and its potential applicability in most challenging magnetoencephalographic tasks.

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• Resonant nonlinear magneto-optical effects in atoms
• Spin-exchange relaxation free magnetometry with Cs vapor
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Cited by in corpus (9)

• All-Optical Nonzero-Field Vector Magnetic Sensor For Magnetoencephalography
• Level-crossing resonances on open atomic transitions in a buffered Cs vapor cell: Linewidth narrowing, high contrast and applications to atomic magnetometry
• All-optical atomic magnetometry using an elliptically polarized amplitude-modulated light wave
• A method of laser frequency stabilization based on the effect of linear dichroism in alkali metal vapors in a modulated transverse magnetic field
• Anomalous suppression of spin-exchange relaxation in alignment signals in cesium in ultra-weak magnetic fields
• Ultimate parameters of an all-optical MX resonance in Cs in ultra-weak magnetic field
• Bistability of optical properties of cesium vapor due to collective interaction of alignment and orientation under strong spin exchange conditions
• Portable Single-Beam Atomic Total-Field Magnetometer for Stand-off Magnetic Sensing
• Atomic magnetometry based on the ground-state Hanle effect in an elliptically polarized light wave