We present an overview of nonlinear phenomena related to optical quadratic solitons—
intrinsically multi-component localized states of light, which can exist in media without …

Multicolor optical solitons mediated by quadratic nonlinearities have been observed
experimentally during the last few years in a variety of materials and geometries in a number …

We demonstrate that monochromatic infrared laser pulses can generate polychromatic light
in noncentrosymmetric crystals simultaneously covering the ultraviolet, visible, and infrared …

A theoretical model is developed to characterize spatiotemporal mode locking (ML) in
quadratic nonlinear media. The model is based on the two-dimensional nonlinear …

The experimental demonstration in 1995 of spatial soliton formation mediated by parametric
wave interactions in crystals with quadratic nonlinearities, which had been theoretically …

A two-dimensional theoretical model is constructed to describe optical mode-locking (ML) in
quadratically nonlinear waveguide arrays (QWGAs). Steady-state solutions of the …

We perform a temporal reshaping of laser pulses by means of quadratic spatial soliton
excitation combined with a spatial filtering of the output beam. We demonstrate that the …

We consider the propagation of broad optical beams through slab waveguides with a purely
quadratic nonlinearity and containing linear and nonlinear long-period quasi-phase …

A two-dimensional theoretical model is constructed to describe optical mode-locking (ML) in
quadratically nonlinear waveguide arrays (QWGAs). Steady-state solutions of the …

We report the first experimental observation, to our knowledge, of phase-controlled three-
wave interactions between two spatial solitons in a bulk quadratic nonlinear crystal. We …