Influence of the dynamic Stark effect on polarization of resonance fluorescence

A. V. Lyaptsev

Sumit K. Basu, T. Pramila, D. Kanjilal

V. N. Rebane

V. N. Rebane

Marcis P. Auzinsh, R. Ferber, О. Nikolayeva +2 more

Influence of the Stark effect on the fluorescence polarization of X1Σ→B1Π-state laser-excited NaRb: application to the direct imaging of electric fields, Marcis Auzinsh, Ruvin Ferber, Olga Nikolayeva, Neil Shafer-Ray, Maris Tamanis

Christian Delsart, J. Keller, V.Paul Kaftandjian

The dynamic Stark effect (Autler-Townes splitting and radiative shift) of a J = 0 ↔ J = 1 optical transition have been investigated. The barium atomic beam is illuminated by a strong pump beam, resonant or slightly non-resonant with the BaI resonance line (λ = 5 535 Å) ; the fluorescence induced by a weak probe beam is detected versus the probe frequency. With linear polarizations for the two beams one deals either with a two-level (parallel polarizations) or with a three-level system (perpendicular polarizations). In the latter case and for small detunings of the pump beam, the Autler-Townes doublet has been observed. For large detunings of the pump beam a single, shifted resonance has been obtained with both polarization settings. In the three-level case the observation of the passage from the Autler-Townes situation to the light-shift situation, is reported. The corresponding calculations are presented; a particular attention is paid to the case of large detunings for the pump beam (light-shift situation). The evolution calculated for the resonance curve (position and relative intensities of the peaks) when the relative polarization directions are changed is consistent with the experimental data.