Line shapes of two-photon-induced fluorescence

I. V. Zhurkin, L. Yu. Khryashchev

Moorad Alexanian, Subir K. Bose

A recent work on two-photon fluorescence is extended by considering the pump field to be a coherent state, which represents a laser field operating well above threshold. The dynamical conditions are investigated under which the two-photon spectrum gives rise, in addition to a Lorentzian line shape at the pump frequency, to two Voigt spectral sideband profiles. Additional conditions are found under which the Voigt profile behaves like either a Gaussian or a Lorentzian line shape.

N. I. Enaki, O. B. Prepelitsa

David A. Holm, M. Sargent

Mara Goff Prentiss, Shaoul Ezekiel

Intensity-dependent fluorescence line-shape asymmetries have been observed for two-level atoms in a standing-wave excitation field. These asymmetries are attributed to the force experienced by the induced atomic dipoles in the field gradient of the standing wave. Preliminary calculations support the experimental observations.

Constantine Mavroyannis