Ground-state counterpropagating solitons in photorefractive media with saturable nonlinearity

Tai Chia Lin, Milivoj R. Belić, Milan S. Petrović*, Najdan B. Aleksić, Goong Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We investigate the existence and form of (2 + 1)-dimensional ground-state counterpropagating solitons in photorefractive media with saturable nonlinearity. General conditions for the existence of fundamental solitons in a local isotropic model that includes an intensity-dependent saturable nonlinearity are identified. We confirm our theoretical findings numerically and determine the ground-state profiles. We check their stability in propagation and identify the coupling constant threshold for their existence. Critical exponents of the power and beam width are determined as functions of the propagation constant at the threshold. We finally formulate a variational approach to the same problem, introduce an approximate fundamental Gaussian solution, and verify that this method leads to the same threshold and similar critical exponents as the theoretical and numerical methods.

Original languageEnglish
Pages (from-to)1036-1040
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume30
Issue number4
DOIs
Publication statusPublished - Apr 2013
Externally publishedYes

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