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The excitation of a thin layer of two-level permanent dipole moment atoms byultimately short (less than field oscillation period) electromagnetic pulses(videopulse) is observed. The numerical analysis of matter equations free ofrotating wave approximation and relaxation reveals a strong affect of localfield and Stark effect on temporal behavior of transmitted field. Specificallyit is demonstrated that a dense film irradiated by videopulse emits a shortresponse with a delay much longer even than the characteristic cooperative timeof atom ensemble. It is supposed that the local field in the thin layer ofpermanent dipole atoms is able to re-pump the atomic subsystem. The closeanalogy to nonlinear pendulum motion is discuused.Comment: 18 pages, 13 figures, PDF onl

<title>Propagation of videopulse through a thin layer of two-level atoms possessing permanent dipole moments</title>