Line-shapes in Doppler-free two-photon spectroscopy. The effect of finite transit time

F. Biraben (1) , M. Bassini , B. Cagnac (1)

1 LSH-ENS - Laboratoire de Spectroscopie Hertzienne de l'ENS

A general formalism is developed with the aim of calculating the line-shapes in two-photon absorption for the case of non monochromatic fields. This formalism is applied to the problem of the finite transit time of the atoms through the Laser beam; and it permits a precise expression to be obtained for the line-shape (convolution of a Lorentzian curve and a double-exponential curve). The comparison is made using experimental profiles.

Mots clés: atomic spectral line breadth; two photon spectra

Domaines: Articles anciens

F. Biraben, M. Bassini, B. Cagnac. Line-shapes in Doppler-free two-photon spectroscopy. The effect of finite transit time. Journal de Physique, 1979, 40 (5), pp.445-455. ⟨10.1051/jphys:01979004005044500⟩. ⟨jpa-00209125⟩