The excitation of a thin layer of two-level permanent dipole moment atoms by ultimately short (less than field oscillation period) electromagnetic pulses (videopulse) is observed. The numerical analysis of matter equations free of rotating wave approximation and relaxation reveals a strong affect of local field and Stark effect on temporal behavior oftransmitted field. Specifically it is demonstrated that a dense film irradiated by videopulse emits a short response with a delay much longer even than the characteristic cooperative time of atom ensemble. It is supposed that the local field in the thin layer of permanent dipole atoms is able to re-pump the atomic subsystem. The close analogy to nonlinear pendulum motion is discussed.

Date Published: 13 April 2007
PDF: 13 pages
Proc. SPIE 6612, Laser Optics 2006: Diode Lasers and Telecommunication Systems, 66120I (13 April 2007); doi: 10.1117/12.740186

Published in SPIE Proceedings Vol. 6612:
Laser Optics 2006: Diode Lasers and Telecommunication Systems
Nikolay N. Rosanov, Editor(s)