Working with a beam of $^{174}\mathrm{Yb}$ , we have studied the temporal development of Autler-Townes spectra following switchon of a strong, resonant, driving field. The transient fluorescence spectra observed are dramatically different from those found in the steady state. We find that either member of the Autler-Townes doublet can be eliminated by an appropriate shift in the phase of the driving field, and that the spectral peaks can display interesting temporal oscillations. The observed behavior is interpreted in terms of atomic dynamics and a polarization of the dressed atom-field states.Working with a beam of $^{174}\mathrm{Yb}$, we have studied the temporal development of Autler-Townes spectra following switchon of a strong, resonant, driving field. The transient fluorescence spectra observed are dramatically different from those found in the steady state. We find that either member of the Autler-Townes doublet can be eliminated by an appropriate shift in the phase of the driving field, and that the spectral peaks can display interesting temporal oscillations. The observed behavior is interpreted in terms of atomic dynamics and a polarization of the dressed atom-field states.

Physical Review LettersOct 6, 198640 citations

Dynamical suppression of the Autler-Townes doublet in the presence of a cavity

Peng Zhou, S. Swain

We study the Autler-Townes absorption spectrum of the upper and intermediate levels of a three-level cascade atom in which the intermediate and ground levels are strongly driven by a laser field as well as weakly coupled by a cavity mode [Phys. Rev. 100, 703 (1955)]. Surprisingly, one of the Autler-Townes peaks may be greatly suppressed or enhanced by tuning the cavity resonant frequency. The larger the Rabi frequency, the more pronounced the cavity-induced suppression or enhancement. The Autler-Townes spectrum carries full information on the cavity-induced modification of the strongly driven levels. A physical interpretation is presented in the dressed-state basis.We study the Autler-Townes absorption spectrum of the upper and intermediate levels of a three-level cascade atom in which the intermediate and ground levels are strongly driven by a laser field as well as weakly coupled by a cavity mode [Phys. Rev. 100, 703 (1955)]. Surprisingly, one of the Autler-Townes peaks may be greatly suppressed or enhanced by tuning the cavity resonant frequency. The larger the Rabi frequency, the more pronounced the cavity-induced suppression or enhancement. The Autler-Townes spectrum carries full information on the cavity-induced modification of the strongly driven levels. A physical interpretation is presented in the dressed-state basis.

Physical Review AMay 1, 19985 citations

Working with a beam of

^{174}\mathrm{Yb}

, we have studied the temporal development of Autler-Townes spectra following switchon of a strong, resonant, driving field. The transient fluorescence spectra observed are dramatically different from those found in the steady state. We find that either member of the Autler-Townes doublet can be eliminated by an appropriate shift in the phase of the driving field, and that the spectral peaks can display interesting temporal oscillations. The observed behavior is interpreted in terms of atomic dynamics and a polarization of the dressed atom-field states.