An optically modulated zero-field atomic magnetometer with suppressed spin-exchange broadening

Abstract

We demonstrate an optically pumped ${}^{87}$Rb magnetometer in a microfabricated vapor cell based on a zero-field dispersive resonance generated by optical modulation of the ${}^{87}$Rb ground state energy levels. The magnetometer is operated in the spin-exchange relaxation-free regime where high magnetic field sensitivities can be achieved. This device can be useful in applications requiring array-based magnetometers where radio frequency magnetic fields can induce cross-talk among adjacent sensors or affect the source of the magnetic field being measured.

References in corpus (6)

• Optical Magnetometry
• Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer
• A room temperature 19-channel magnetic field mapping device for cardiac signals
• Cancellation of nonlinear Zeeman shifts with light shifts
• A Remotely Interrogated All-Optical ${}^{87}$Rb Magnetometer
• All optical sensor for automated magnetometry based on Coherent Population Trapping

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• Strong light shifts from near-resonant and polychromatic fields: comparison of Floquet theory and experiment
• Local, mm-scale ${}^1$H magnetic resonance imaging using atomic vapors