On pulse propagation in a coherently prepared multi-level medium † Reviewing of this paper was handled by a member of the Editorial Board.

Abstract

The propagation dynamics of N laser pulses in a coherently prepared (N +1)-level quantum medium is investigated. A N -photon Beer's law is presented and a generalized Beer's length defined, which determines the decay of the laser pulses in the medium. A general propagation relation for the N laser pulses which holds for long distances is also given.