title: Precursor forms of cavity solitons in nonlinear semiconductor microresonators.
abstract: We study the transverse nonlinear dynamics of bulk and multi-quantum well AlGaAs microresonators, in the mixed dispersive and saturable absorptive regime, slightly below the band-gap edge energy. With a Gaussian beam excitation we observe strongly localized states of various shapes, bright or dark in reflection. Their dynamics appears to be ruled by strong thermally induced nonlinear mechanisms, acting as a dressing mechanism for electronic nonlinearities. Precursor forms of cavity solitons are also identified.
authors.affiliation: Laboratoire de Photonique et de Nanostructures, Centre National de la Recherche Scientifique-UPR020, route de Nozay, 91460 Marcoussis, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Ganne
authors.forename: Gintas
authors.initials: G
authors.lastname: Slekys
authors.forename: Isabelle
authors.initials: I
authors.lastname: Sagnes
authors.forename: Robert
authors.initials: R
authors.lastname: Kuszelewicz