Study of Rb atomic transitions D 1,2 lines in strong magnetic field based on fluorescence spectra of sub-micron thin cell.

G. Hakhumyan (1, 2) , Claude Leroy (1) , Y. Pashayan-Leroy (1) , D. Sarkisyan (2)

1 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
2 IPR - Institute for Physical Research

The so-called "λ/2-Zeeman technique" (HLZT) for studies of individual optical transition between Zeeman sublevels of atomic hyperfine structure in an external magnetic field of B = 10 - 2500 G is presented. Particularly, implementation of HLZT allows one to realize a direct determination of frequency shift and a strong modification of an optical transition probability between Zeeman components in a B-field. The main advantages of the method compared to "λ-Zeeman technique" (LZT) is that it allows one to study weak transitions. Particularly, with the help of fluorescence on 87Rb, D2 line, Fg = 1 → Fe = 3 transitions, three "forbidden" transitions in magnetic field B are detected and studied. Also, on 87Rb D1 line, Fg = 1, mF = 0 → Fe = 1, mF = 0 "forbidden" transition is detected when B ~ 400 G. A strong modification of the probability for these "forbidden" transitions is revealed. The theoretical model well describes the observed results

Mots clés: Zeeman Hamiltonian; atomic transition intensity; frequency shift; submicron thin vapor

Domaines: Physique Quantique [quant-ph]

G. Hakhumyan, Claude Leroy, Y. Pashayan-Leroy, D. Sarkisyan. Study of Rb atomic transitions D 1,2 lines in strong magnetic field based on fluorescence spectra of sub-micron thin cell.. International Conference on Laser Physics 2010, Oct 2010, Ashtarak, Armenia. pp.79980V, ⟨10.1117/12.890893⟩. ⟨hal-00620533⟩