Two-dimensional solitons in cubic-saturable media with PT-symmetric lattices

Göksel İ., Antar N., Bakirtas I.

CHAOS SOLITONS & FRACTALS, cilt.109, ss.83-89, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 109
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.chaos.2018.02.019
  • Dergi Adı: CHAOS SOLITONS & FRACTALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.83-89
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

In this paper, we discuss the existence of lattice solitons supported by cubic-saturable nonlinearity in the framework of nonlinear Schrodinger (NLS) equation with external potentials such as parity-time-symmetric lattices with and without defects by using the pseudo-spectral renormalization method. Linear and nonlinear stability properties of the lattice solitons centered on the maximum of the PT-symmetric potential are investigated in detail. (C) 2018 Elsevier Ltd. All rights reserved.