O. Faucher et al., CONTROL OF LASER-INDUCED CONTINUUM STRUCTURE IN THE VICINITY OF AUTOIONIZING STATES, Physical review letters, 70(20), 1993, pp. 3004-3007
The first observation of laser induced continuum structure on autoioni
zing states in both third harmonic generation and ionization is report
ed for atomic Ca. The possibility of controlling the shape of the indu
ced structure, exhibiting a transition from a dip to a peak, through t
he laser field intensities is demonstrated. Theoretical time dependent
analysis including calculated atomic parameters verifies that the exp
erimental observations originate from laser field dependent coherent i
nteractions.