2023/11/22 by A. Sargsyan, Sargsyan, Armen, Emmanuel Klinger +5
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum optics and atomic interactions
paper · pdf · doi:10.48550/arxiv.2311.13288
openalex publication_date 2023/11/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Zeeman effect is an important topic in atomic spectroscopy. The induced change in transition frequencies and amplitudes finds applications in the Earth-field-range magnetometry. At intermediate magnetic field amplitude B∼ B0 = Ahfs/μB, where Ahfs is the magnetic dipole constant of the ground state, and μB is the Bohr magneton (B0≈ 1.7 kG for Cs), the rigorous rule ΔF = 0, ±1 is affected by the coupling between magnetic sub-levels induced by the field. Transitions satisfying ΔF = ±2, referred to as magnetically-induced transitions, can be observed. Here, we show that a significant redistribution of the Cs 6S1/2→ 6P3/2 magnetically-induced transition intensities occurs with increasing magnetic field. We observe that the strongest transition in the group Fg=3→ Fe=5 (σ+ polarization) for B3 B0. On the other hand, the strongest transition in the group Fg=2→ Fe=4 (σ- polarization) remains so for all our measurements with magnetic fields up to 9 kG. These results are in agreement with a theoretical model. The model predicts that similar observations can be made for all alkali metals, including Na, K and Rb atoms. Our findings are important for magnetometers utilizing the Zeeman effect above Earth field, following the rapid development of micro-machined vapor-cell-based sensors.