Resonance fluorescence due to intense laser fields from a Zeeman degenerate atom being perturbed by collisional interactions is calculated in the impact regime by using the quantum-fluctuation-regression theorem. Various interesting effects are found. For example, the scattered intensity spectrum for a $J=0$ to $J=1$ transition for polarization parallel to the laser polarization is essentially an asymmetric triplet, whereas for a perpendicular polarization due to collisions the spectrum is essentially a doublet (whose frequencies do not correspond with any of those of the triplet). Further, the width of the fluorescent component (whose frequency is close to the unperturbed frequency) actually decreases with increasing laser power.Resonance fluorescence due to intense laser fields from a Zeeman degenerate atom being perturbed by collisional interactions is calculated in the impact regime by using the quantum-fluctuation-regression theorem. Various interesting effects are found. For example, the scattered intensity spectrum for a $J=0$ to $J=1$ transition for polarization parallel to the laser polarization is essentially an asymmetric triplet, whereas for a perpendicular polarization due to collisions the spectrum is essentially a doublet (whose frequencies do not correspond with any of those of the triplet). Further, the width of the fluorescent component (whose frequency is close to the unperturbed frequency) actually decreases with increasing laser power.

Physical Review AAug 1, 198027 citations

Collisional Depolarization of Resonance Fluorescence

Lue Yung-Chow Chiu

peacJan 1, 19690 citations

Theory of time-dependent intense-field collisional resonance fluorescence

Paul D. Kleiber, J. Cooper, Keith R. Burnett +2 more

The time-dependent theory of Courtens and Sz\"oke is generalized using the approach of Burnett et al. to derive time-dependent spectral intensities of resonance fluorescence from atoms driven by a pulsed laser in the presence of collisions. These results are valid both for laser detunings inside and outside the usual impact region of the spectrum, including Zeeman degeneracy effects. We apply this theory to a simple but important example ( $J=0$ to $J=1$ ) to obtain quantitative predictions for the observable scattered-light spectrum which can be directly compared with recent experiments.The time-dependent theory of Courtens and Sz\"oke is generalized using the approach of Burnett et al. to derive time-dependent spectral intensities of resonance fluorescence from atoms driven by a pulsed laser in the presence of collisions. These results are valid both for laser detunings inside and outside the usual impact region of the spectrum, including Zeeman degeneracy effects. We apply this theory to a simple but important example ($J=0$ to $J=1$) to obtain quantitative predictions for the observable scattered-light spectrum which can be directly compared with recent experiments.

Physical Review AJan 1, 198326 citations

Resonance fluorescence in intense laser fields

Dan E. Browne

Journal of Modern OpticsJul 10, 20001 citation

J=0

J=1

transition for polarization parallel to the laser polarization is essentially an asymmetric triplet, whereas for a perpendicular polarization due to collisions the spectrum is essentially a doublet (whose frequencies do not correspond with any of those of the triplet). Further, the width of the fluorescent component (whose frequency is close to the unperturbed frequency) actually decreases with increasing laser power.

J=0

J=1

) to obtain quantitative predictions for the observable scattered-light spectrum which can be directly compared with recent experiments.