D. Grischkowsky, N.S. Shiren, et al.
Applied Physics Letters
Paper
Generation of time-reversed optical wave fronts by backward-wave photon echoes
Abstract
It is shown that backward-wave photon echoes may be generated and the echo wave fronts are time reversed with respect to the first pulse of either a two- or three-pulse input sequence. Some comparisons are made with the four-wave degenerate parametric technique for generating time-reversed wave fronts.