Quantum beat spectroscopy: Stimulated emission probe of hyperfine quantum beats in the atomic Cs8p2P3/2level

Abstract

Measurements of hyperfine polarization quantum beats are used to determine the magnetic dipole (A) and electric quadrupole (B) coupling constants in the excited atomic Cs 8p 2 P 3/2 level. The experimental approach is a combination of pulsed optical pumping and time-delayed stimulated-emission probing of the excited level. From the measured evolution of the atomic linear polarization degree as a function of probe delay time, we determine the hyperfine coupling constants A = 7.42(6) MHz and B = 0.14(29) MHz.

Time-resolved UV–IR pump-stimulated emission pump spectroscopy to probe collisional relaxation of the 8p2P3/2 state of Cs I

“…At t = 1.5 ns the linear polarization for the 6s 2 S 1/2 → 8p 2 P 3/2 → 5d 2 D 5/2 transition is obtained to be 12.4(5)%. This measurement is in excellent agreement with theory [23,24]. Figure 3 illustrates typical fluorescence signal immediately after stimulated emission pump laser arrives into the interaction region.…”

“…The linear polarization degree evolves in time due to hyperfine structure in the excited level. We have measured the time evolution of polarization from t = 0 to t = 150 ns in our earlier work [23]. At t = 1.5 ns the linear polarization for the 6s 2 S 1/2 → 8p 2 P 3/2 → 5d 2 D 5/2 transition is obtained to be 12.4(5)%.…”

Measurement of the hyperfine coupling constants and absolute energies of the $8p \ ^2P_{1/2}$ and $8p \ ^2P_{3/2}$ levels in atomic cesium

“…[52] and [53]; less so with those of Refs. [54][55][56]. The uncertainty of our measurement is comparable to, but slightly larger than that of Refs.…”

Control of electronic magnetic state population via light polarization in the 5p3/2$ \rightarrow $ 6p3/2electric quadrupole transition in atomic rubidium

“…Furthermore, it is shown that polarization configuration can be chosen to distinguish between the dynamics of the preparation stage and the selection rules of the electric quadrupole transition. This could be a useful toolbox beyond the dipole approximation, for example in the study of polarization degree in optical transitions as made by Baumgartner et al [13] and in the study of quantum beat spectroscopy made by Bayram et al [14].…”