1 January 1998 Cooperative dynamics of an ensemble of atoms with Λ-scheme of levels driven by two resonant laser fields
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Proceedings Volume 3345, International Workshop on New Approaches to High-Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering; (1998); doi: 10.1117/12.299585
Event: International Workshop on New Approaches to High Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering, 1997, St. Petersburg, Russian Federation
Abstract
We derive the equations describing the dynamics of an ensemble of atoms with (Lambda) - scheme of levels driven by two coherent resonant fields in a case when cooperative relaxation prevails over usual incoherent spontaneous emission. We investigate numerically temporal dynamics of mean values of the collective atomic operators. When the two-photon resonance condition is fulfilled then all atoms tend to be trapped in a coherent dark state, so coherent population trapping arises in a case of cooperative decay. Most important values characterizing this phenomenon such as the width of the black line and the time of initial transient stage of evolution are evaluated.
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I. A. Grigorenko, Boris G. Matisov, "Cooperative dynamics of an ensemble of atoms with Λ-scheme of levels driven by two resonant laser fields", Proc. SPIE 3345, International Workshop on New Approaches to High-Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering, (1 January 1998); doi: 10.1117/12.299585; https://doi.org/10.1117/12.299585
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