Abstract

We present the results of numerical simulation of the adiabaton emergence process in the lambda scheme of degenerate energy levels with the quantum number of the total angular momentum,J = 0, 2, 1. In the case of linear polarisation of the input highfrequency field and circular polarisation of the input low-frequency field, the energy of the high-frequency component of the adiabatonis shown to focus in two or more pulses: in one of the pulses the field is circularly polarised in a direction opposite to that of the low-frequency input field, whereas in other pulses it is circularly polarised in the same direction as that of the field. This effect is caused by the specific character of electromagnetically induced transparency in the lambda scheme under study and by the trends introduced by self-induced transparency in it.

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