Time-dependent CARS spectroscopy of atoms: spectral exchange in the system of hyperfine components and slowing of Doppler dephasing by collisions
Ganikhanov F. Sh., Konovalov I. G., Kulyasov V. N., Morozov V. B., Tunkin V. G.
A slowing of Doppler dephasing by collisions has been detected in experiments on time-dependent CARS spectroscopy of thulium (Tm) atoms. This slowing corresponds to the Dicke contraction in steady-state spectroscopy. A spectral exchange has also been detected. These effects have not been observed previously in atomic spectroscopy in the optical range. The 4ir7/2-4F5/2 transition of Tm atoms was excited and probed. Spectral exchange was observed in the system of hyperfine components of this transition.