https://doi.org/10.1140/epjd/e2007-00220-8
Implementation of a double-scanning technique for studies of the Hanle effect in rubidium vapor
1
Department of Physics and Laser Center, University of Latvia, 19 Rainis Blvd., 1586 Riga, Latvia
2
Institute for Physical Research, NAS of Armenia, Ashtarak, 20203, Armenia
Corresponding author: a Aigars.Atvars@lu.lv
Received:
16
March
2007
Revised:
21
May
2007
Published online:
29
June
2007
We have studied the resonance fluorescence of a room-temperature rubidium vapor exited to the atomic 5P3/2 state (D2 line) by powerful single-frequency cw laser radiation (1.25 W/cm2) in the presence of a magnetic field. In these studies, the slow, linear scanning of the laser frequency across the hyperfine transitions of the D2 line is combined with a fast linear scanning of the applied magnetic field, which allows us to record frequency-dependent Hanle resonances from all the groups of hyperfine transitions including V- and Λ-type systems. Rate equations were used to simulate fluorescence signals for 85Rb due to circularly polarized exciting laser radiation with different mean frequency values and laser intensity values. The simulation show a dependence of the fluorescence on the magnetic field. The Doppler effect was taken into account by averaging the calculated signals over different velocity groups. Theoretical calculations give a width of the signal peak in good agreement with experiment.
PACS: 32.80.Bx – Level crossing and optical pumping / 32.80.Qk – Coherent control of atomic interactions with photons / 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
