Abstract
In this paper, the propagation expression of cosine-Gaussian cross-phase beams (CGCPBs) is derived based on the nonlocal nonlinear Schrödinger equation and the propagation characteristics of CGCPBs in strongly nonlocal nonlinear media (SNNM) are researched. It is worth noting that the mode of CGCPBs can be controlled by modifying the parameters of cosine term and cross phase term. CGCPBs can form generalized high-order breathers, which signifies that the multi-peak light intensity pattern and the beam width evolve periodically during the transmission process. Apart from that, the impact of the parameters on the light intensity mode, the phase and the beam width is discussed by changing the parameters in the initial incident transmission expression. The research content of this paper provides reference value for controlling beams.
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