Robust, High-speed, All-Optical Atomic Magnetometer

Abstract

A self-oscillating magnetometer based on the nonlinear magneto-optical rotation effect with separate modulated pump and unmodulated probe beams is demonstrated. This device possesses a bandwidth exceeding $1\khz$. Pump and probe are delivered by optical fiber, facilitating miniaturization and modularization. The magnetometer has been operated both with vertical-cavity surface-emitting lasers (VCSELs), which are well suited to portable applications, and with conventional edge-emitting diode lasers. A sensitivity of around $3\mathrm{nG}$ is achieved for a measurement time of $1\s$.

8 pages, 5 figs

References in corpus (6)

• A new limit on the permanent electric dipole moment of ^{199}Hg
• Can a quantum nondemolition measurement improve the sensitivity of an atomic magnetometer?
• Nonlinear magneto-optical rotation with frequency-modulated light
• High precision measurement of the static dipole polarizability of cesium
• Nonlinear magneto-optical rotation with frequency-modulated light in the geophysical field range
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• Coherence Protection of Electron Spin in Earth-field Range by All-optical Dynamic Decoupling