Synchronous Optical Pumping of Quantum Revival Beats for Atomic Magnetometery

Details Synchronous Optical Pumping of Quantum Revival Beats for Atomic Magnetometery Synchronous Optical Pumping of Quantum Revival Beats for Atomic Magnetometery

2006-11-01

arxiv.org/abs/physics/0611014v1

Physics

Atomic Physics

4 pages

Scientific paper

10.1103/PhysRevA.75.051407

We observe quantum beats with periodic revivals due to non-linear spacing of Zeeman levels in the ground state of potassium atoms and demonstrate their synchronous optical pumping by double modulation of the pumping light at the Larmor frequency and the revival frequency. We show that synchronous pumping increases the degree of spin polarization by a factor of 4. As a practical example, we explore the application of this double-modulation technique to atomic magnetometers operating in the geomagnetic field range and find that it can increase the sensitivity and reduce magnetic field orientation-dependent measurement errors endemic to alkali-metal magnetometers.

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