Knowledge Bank

We have experimentally investigated the anisotropy-dependent polarization spectra for the $\mathrm{<mrow\; data-mjx-texclass="ORD">133</mrow>}$Cs $6s2S1/2\to 6p2P3/2\to 10s2S1/2$ transition using a two-photon two-color pulsed pump-probe technique. In the investigation, circular and linear polarization degrees were measured to extract the anisotropy-dependent depolarization cross sections in the excited $6p2P3/2$ level cesium atoms due to collisions with the ground-level argon atoms over the Zeeman coherences. We also studied anisotropy oscillations during the pump-probe overlap time in the excited state cesium due to the coupling of nuclear momentum to the electronic angular momentum. The spectra show strong depolarization of the $6p2P3/2$ level and the values for the measured depolarization cross sections are in good agreement with experiment and theoretical predictions.