High-quality level-crossing resonances under counterpropagating circularly polarized light waves for applications in atomic magnetometry

2021/04/16 by D. V. Brazhnikov, Brazhnikov, D. V., V. I. Vishnyakov +9
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Physics (quant-ph) #Quantum optics and atomic interactions

paper · pdf · doi:10.48550/arxiv.2104.08192

openalex publication_date 2021/04/16 · openalex created_date 2021/04/26 · openalex updated_date 2026/07/28

Abstract

Level-crossing (LC) resonances in a buffer-gas-filled cesium vapor cell are studied under counterpropagating pump and probe light waves with opposite circular polarizations. The waves excite the D₁-line ground-state level F_g= 4, while a transverse magnetic field (\rm B_x⊥\rm k) is scanned around zero to observe the resonance of electromagnetically induced absorption (EIA). It is shown that adding the pump light wave significantly improves the properties of the resonances in comparison with the commonly used scheme with a single light wave. As far as a small vapor cell (≈ 0.1 cm³) at relatively low temperature (≈ 45-60 ^∘C) is utilized, the results have good prospects for developing a low-power miniaturized atomic magnetometer.

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