Abstract

We report an experimental study on the ground-state magnetic resonances of optically pumped cesium vapors at lower temperatures of about 30°C–40°C. A longitudinal static magnetic field is applied along the single laser beam to control the splitting of the Zeeman sublevels of the ground state. When the laser frequency is set to the cesium $D_1$ spectral line ($F=3\to F^{\prime }=4$), by modifying the transverse radio frequency field, we find that the unusual weaker-absorption and zero-dip resonance phenomena occur in the optical-magnetic resonance (OMR) effects, which is called the cesium optical-RF resonance line reversals and doubling in this paper. We explore a theoretical description for these phenomena by using density matrix equations, and our calculated results are in approximate agreement with the experimental results.

© 2019 Optical Society of America

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