Multilevel Laser Induced Continuum Structure |
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Authors: | Kaloyan Zlatanov Nikolay Vitanov |
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Institution: | 1.Department of Physics, Sofia University, James Bourchier 5 Blvd, 1164 Sofia, Bulgaria;2.Institute of Solid State Physics, Bulgarian Academy of Sciences, Tsarigradsko Chaussée 72, 1784 Sofia, Bulgaria |
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Abstract: | Laser-induced-continuum-structure (LICS) allows for coherent control techniques to be applied in a Raman type system with an intermediate continuum state. The standard LICS problem involves two bound states coupled to one or more continua. In this paper, we discuss the simplest non-trivial multistate generalization of LICS which couples two bound levels, each composed of two degenerate states through a common continuum state. We reduce the complexity of the system by switching to a rotated basis of the bound states, in which different sub-systems of lower dimension evolve independently. We derive the trapping condition and explore the dynamics of the sub-systems under different initial conditions. |
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Keywords: | LICS ionization continuum Fano profile multilevel trapping condition population trapping |
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