title: Energy localization in photonic crystals of a purely nonlinear origin
abstract: We investigate electromagnetic localization in a nonlinear photonic crystal, i.e., a structure with a stop band in its nonlinear spectral response. Taking a one-dimensional model of degenerate two-wave interaction we introduce the concept of parametric nonlinear-gap solitons, that is, strongly localized two-color locked envelopes arising from interplay of two nonlinear effects, which propagate slowly. We discuss the observable signature of these novel localized structures.
authors.affiliation: National Institute for the Physics of Matter, INFM-RM3, Via della Vasca Navale 84, 00146 Roma, Italy.
authors.initials: C
authors.lastname: Conti
authors.initials: S
authors.lastname: Trillo
authors.initials: G
authors.lastname: Assanto