Abstract
In the field of coherent laser-atom interactions, the phenomenon of population trapping has attracted particular attention (for a recent review see Ref. 1). A major part of the investigation has concentrated on atomic systems that contain not only bound states but also continua.2 In this paper we study two fundamental systems that involve continua: a system with a single autoionizing state and the laser- induced continuum structure scheme (LICS), both shown in Fig. 1. We pay special attention to the response of these systems to time-dependent pulse interactions, which we find to differ from that of square pulse interactions. Such a study is particularly useful from the point of view of the many applications associated with these systems.3
© 1998 Optical Society of America
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