title: Nonlinear evolution of Airy-like beams generated by modulated waveguide arrays.
abstract: We numerically study the formation of modulated waveguide generated Airy-like beams and their subsequent evolution in homogeneous medium. The results show that the Airy-like beams could be generated from narrow Gaussian beams propagating in one-dimensional transverse separation modulated unbent, cosine bent, or logarithm bent waveguide arrays, respectively. The waveguide-generated Airy-like beams maintain their characteristics when propagating without nonlinearity or under the self-defocusing nonlinearity in homogeneous medium, while the beams are distorted under the self-focusing nonlinearity. The deformation depends on the waveguide bending and the outgoing angles of the Airy-like beams. Our results provide a new way to generate and manipulate the Airy-like beam.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Cao
authors.forename: Qinggui
authors.initials: Q
authors.lastname: Tan
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Li
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Qi