Nonlinearity-mediated collimation of optical beams

We investigated the evolutions of optical beams in an optical system composed of free spaces and nonlocal nonlinear media layers in a cascaded manner. From an application point of view, two kinds of evolution processes for Gaussian beams, nonlinearity-mediated collimation and switching from breathers to solitons, were discussed in details. By adjusting the input optical power, the collimating, the compressing and the expanding of optical beams are convenient to be controlled. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement