Prepulses are associated with resonant pulse propagation in degenerate media. We show numerically that the appealing explanation of prepulses in terms of separate pulse propagation dynamics for strong and weak dipole channels in a Q(2) degenerate atomic medium is incorrect, although prepulses remain a characteristic of degenerate media.
© 1988 Optical Society of America
O. Barbosa-García, G. E. Torres-Cisneros, and J. J. Sánchez-Mondragón, "Prepulses as a distinctive characteristic of resonant pulse propagation in degenerate atomic media," Opt. Lett. 13, 999-1001 (1988)