title: Observation of nonlinear Airy-like beam evolution in lithium niobate.
abstract: We report the observation of Gaussian beam fragmentation into Airy-like waveforms during nonlinear propagation. The effect is supported by the high-intensity photovoltaic nonlinearity arising in unbiased pure congruent lithium niobate. The process is found to occur when the nonlinear response is dominated by the nonlocal effects associated with the charge-displacement process.
authors.affiliation: CNISM and Dipartimento di Elettronica, Università degli Studi di Pavia Via Ferrata 1, 27100 Pavia, Italy. jacopo.parravicini@unipv.it
authors.forename: Jacopo
authors.initials: J
authors.lastname: Parravicini
authors.forename: Paolo
authors.initials: P
authors.lastname: Minzioni
authors.forename: Vittorio
authors.initials: V
authors.lastname: Degiorgio
authors.forename: Eugenio
authors.initials: E
authors.lastname: Delre