Abstract
Various properties of counterpropagating mutually incoherent self-trapped beams in optically induced circular photonic lattices with ring defects are investigated numerically. We utilize a local isotropic dynamical model with a Kerr-type saturable nonlinearity. Different incident beam structures are considered. We find spontaneous symmetry breaking of the head-on propagating Gaussian beams. In the case of vortices, we observe beam filamentation and a strong pinning of filaments to the lattice sites. Using a modified Petviashvili's method, we report several novel solitonic structures.
Original language | English |
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Pages (from-to) | 1173-1176 |
Number of pages | 4 |
Journal | Optical Materials |
Volume | 30 |
Issue number | 7 |
DOIs | |
Publication status | Published - Mar 2008 |
Externally published | Yes |
Keywords
- Circular photonic lattices
- Ring defects
- Solitonic structures