Airy-soliton interactions in self-defocusing media with PT potentials

¹ School of Electro-mechanical Engineering, Guangdong University of Technology - Guangzhou 510006, China
² Department of Physics, Guangdong University of Education - Guangzhou 510303, China
³ School of Photoelectric Engineering, Guangdong Polytechnic Normal University - Guangzhou 510665, China
⁴ The MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Applied Physics Institute and Physics of School, Nankai University - Tianjin 300457, China
⁵ Department of Physics and Astronomy, San Francisco State University - San Francisco, CA 94132, USA

^(a) szwstar@gdut.edu.cn

Received: 10 August 2018
Accepted: 26 September 2018

Abstract

We investigate Airy-soliton interactions in self-defocusing media with PT potentials in one transverse dimension. We discuss different potentials in which the interacting beams with different phases are launched into the media at different separation distances. During interactions, there exist a primary collision region and a relaxation region accompanied by continuous interaction with the dispersed Airy tail. In the relaxation region, the beams exist as soliton-like and breathers-like propagation. The beam width and mean power are influenced by initial separation, phase shift and modulation depth of PT potentials. Especially, the collision distance decreases with the spatial beam separation and the mean power possesses sinusoidal dependence on the phase shift.