Robust, High-speed, All-Optical Atomic Magnetometer

Details Robust, High-speed, All-Optical Atomic Magnetometer Robust, High-speed, All-Optical Atomic Magnetometer

2006-09-06

arxiv.org/abs/physics/0609041v1

Physics

Atomic Physics

8 pages, 5 figs

Scientific paper

10.1063/1.2370597

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 $3 {\rm nG}$ is achieved for a measurement time of $1\s$.

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