Propagation dynamics of mixed-pattern solitons in strongly nonlocal nonlinear media

Abstract

This paper mainly investigated the propagation dynamics of the mixed-pattern solitons in strongly nonlocal nonlinear media. The propagation expression of the mixed-pattern soliton is derived, and its propagation characteristics are analyzed, including the evolution of the on-axis light intensity, the contour intensity distributions and the second-order moment beam width. It is found that the evolution behavior of the mixed-pattern soliton is periodic, which is closely related to the incident power and the transformation factor. The evolution of on-axis light intensity can be divided into three situations (depression situation, platform situation and raised situation) depending on the incident power. The evolution of the intensity distributions at the initial position can present three cases (Gaussian-like type, platform type and four-petal type) depending on the transformation factor. A series of numerical simulations are exhibited to explain these typical propagation characteristics. Keywords: Strongly nonlocal nonlinear media, Mixed-pattern soliton, Soliton propagation