Spatial laser-wing suppression in saturated laser-induced fluorescence without spatial selection.
Spatial wings of laser beams are of great concern in saturated laser-induced fluorescence. Their contribution to fluorescence is customarily avoided by resolution of laser peaks in the interaction volume. An alternative and versatile approach is formulated, based on the derivative of fluorescence with respect to laser intensity. It turns out that wing-free data are possible, although they are obtained from wing-dependent fluorescence. The advantages of this approach are exact centerline detection and simplicity of the experimental setup and procedure.
Marrocco
Michele
M
Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA)--Casaccia--Via Anguillarese 301, 00060 S. M. di Galeria, Rome, Italy. michele.marrocco@casaccia.enea.it