title: Raman solitons in media with a Stark shift: soliton regeneration through self-phase modulation.
abstract: An internal phase-shift mechanism can lead to the amplification of Raman solitons even in the presence of coherence decay and detuning. We study here the case of a Raman medium with strong ac Stark shift by using both analytical and numerical methods. Our results also suggest the possibility of propagating stable transient Raman solitons in optical fibers.
authors.forename: R
authors.initials: R
authors.lastname: Wolfson
authors.forename: K J
authors.initials: KJ
authors.lastname: Druhl