Nonlocal surface solitons in two-dimensional PT-symmetric optical lattices

作者：Li, Huagang; Lu, Wanchun; Zhu, Xing^*; Shi, Zhiwei^*

来源：Optics Communications, 2019, 435: 20-24.

DOI：10.1016/j.optcom.2018.11.015

• Nonlocal surface solitons
• PT lattices
• Fourier transform

We investigate the existence and stability of nonlocal surface solitons at the interface between linear media and nonlocal nonlinear media with two-dimensional (2D) parity-time (PT)-symmetric optical lattices. We analytically obtain the nonlinearity-induced change of the refractive index by introducing a reasonable step function with the method of Fourier transform, and carry out the linear stability analysis for the surface solitons based on the response function of the infinite nonlocal medium. Numerical results show that nonlocal PT surface solitons can exist and be stable in 2D PT-symmetric optical lattices.

• 出版日期2019-3-15
• 单位萍乡学院; 广东技术师范大学; 广东第二师范学院; 广东工业大学