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On the Time Dependent Features of the Two-Colour Light Pulses Propagation in the Sodium Vapour |
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A.M. Alhasan and J. Fiutak
Institute of Physics, Faculty of Mathematics and Natural Sciences, Pomeranian Pedagogical University in Słupsk, Arciszewskiego 22b, 76-200 Słupsk, Poland |
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| Received: 29 06 2005; revised version: 04 10 2005; |
| The phase and group velocities of the pulsed light are suitably defined and calculated. So are the duration of both pulses, probe and coupling, and their energies as a function of the travelled distance. The time evolution, for a given distance, of the dressed atom state is described by the Liouville-von Neumann equation for the density matrix. |
| DOI: 10.12693/APhysPolA.109.143 PACS numbers: 42.50.Md, 42.65.-k, 42.50.Hz |